B08_P1425Q0045_Attachment_1_Specs_FINAL.pdf

Yellowstone National Park

Truck Mounted Single Engine Rotary Snowplow requirement

Scope: Yellowstone National Park is needing to purchase a rotary snowplow meeting the following specifications. This machine will be used extensively for the park’s annual spring road opening operations.

Quotes must meet or exceed the salient characteristics outlined in the specification.

1. GENERAL SPECIFICATION:

a. It is the purpose of this specification to describe a new, and of the manufacturer's latest current production model and design, front mount snowblower, heavy-duty single-engine, 4X4, all-wheel steer chassis with a forward-mounted cab. Snowblower shall be capable of 8,500 TPH minimum and casting distances of 150 ft. minimum.

b. The chassis shall have a minimum 60,000-pound GVWR rating at the ground and an approximate wheelbase of 120 inches. The total engine horsepower on board shall be 1200 HP. The configuration shall be front-mounted attachment, forward-mounted cab design with near left-hand steering, and a rear-mounted engine.

c. This snow removal vehicle shall be designed for one-man operation and used up to 30

MPH in transport on flat ground. The design of this unit shall ensure positive tire-to-ground tractive effort while clearing snow. The unit shall have a net cutting width of 128 inches.

2. Referenced Standards:

a. The unit provided is required to meet all current federal and state regulations such as, but not limited to, EPA emissions, FMVSS, and CFR.

b. Certain ISO, SAE, and other consensus standards may be referenced in this specification.

Unless otherwise specified, the latest version of each standard is to be understood. Such standards apply to this specification whether they are required by statutes or administrative law or not.

3. Component Selection:

a. The components selected shall be rated for the maximum loading they would be subjected to in severe service. The torque rating of a driven component shall exceed the input torque.

The parts and structure of the unit shall be sized and designed to safely withstand the maximum load imposed, without failure or induction of deterioration. All units shall be constructed from current production components.

4. Standard Components:

a. All components and accessories advertised in the manufacturer’s current model year brochure and specifications as standard, unless superseded by these specifications, shall be provided with the unit.

b. Manufacturer shall provide 2 copies ea. of Repair/service manual and parts manual.

5. POWER TRAIN:

a. Engine:

i. Diesel, direct injection, water-cooled, 32-liter minimum displacement, electronically controlled, 1200 horsepower, 4,044.8 pound-foot torque:

minimum. Not to exceed 2,100 RPM.

ii. Engine to be 24VDC, dual starter

iii. Engine to be mounted to the rear of chassis for unit balance and to allow for minimum noise injection into the cab.

iv. Governor will be of the correct type to control and limit engine speeds as recommended by the engine, driveline, and power train component manufacturers, for its intended use in this vehicle.

v. To be equipped with an electronic high idle circuit, to maintain approximately 1,200 RPM (for warm- up purposes). Cable control is not acceptable.

vi. A remote bump start is required.

b. To be equipped with the manufacturer's latest electronic controls for fuel injection and engine management including an automatic shutdown system with manual override and an electrical connector for diagnostics.

c. Engine Air Intake System: Must have a two-stage (dual element) air cleaner with cyclonic type pre-cleaner and restriction indicator.

d. Engine Exhaust System: Exhaust system to be designed to prevent rain, snow, or slush from entering the exhaust system. Exhaust piping to be located away from the cab providing maximum visibility and being heat shielded if vulnerable to maintenance personnel.

e. Cooling System:

i. The cooling system shall consist of a charge air cooler, engine coolant radiator, and hydraulic system cooler designed for maximum cooling; to be heavy-duty construction. The tanks and core shall be constructed of aluminum with side members welded together to form a rigid frame. A cooler for the closed loop hydrostatic ground drive system and a cooler for the Funk transmission must be included.

ii. The radiator and cooler assembly shall be mounted with vibration isolators.

iii. The hydraulic fluid cooler shall have a low-temperature bypass to allow rapid warm-up of the hydraulic and hydrostatic system.

iv. The Hydraulic and Hydrostatic systems shall operate out of separate tanks to avoid contamination of both systems with a failure in one system.

v. Coolant to be extended life type antifreeze, affording protection to -60 ℉.

vi. Drain cocks will be provided at the low points of the cooling system.

vii. Safe and easy access to radiator fill.

viii. Engine coolant level sight gauge visible from ground

ix. Diesel fired coolant heater (i.e.. Eberspacher) Install with OEM controller. Wired separately from battery disconnect. Model 24V CS HS 3 Hydronic Single IR FAMOS, 12m Dynamic. 7” Monitor.

1. Camera PN: 0171620

2. Rain Cover PN: 0402320

3. Monitor PN: 0208603

4. Cable 12M 4P PN: 0304451

f. Engine Fuel System:

i. Capacity: 500 gallons (8.3Hr Shift @80%)

ii. Dual tanks mounted mid ship

iii. Remote Mounted Filters: To include ¼ turn ball valves to prevent excessive leakage when changing filters.

iv. Fuel fill: Four-inch diameter with chained cap and removable strainer basket.

v. Dual Tanks: Dual fuel tanks shall be interconnected with a dual side fuel fill, 30 GPM fill rate with shut-off valves at each end of the connector line.

vi. A heated fuel/water separator shall be installed in the supply line.

vii. Fuel Drain: To include a drain plug and valve on each tank.

g. Engine Oil Drain: To be equipped with a ¼ turn ball shut-off valve. Engine Cold Starting

Aids:

i. Glow plugs, grid-type heater, or ether aid.

ii. Engine Block Heater: Immersion type, highest wattage available, 110-volt AC

iii. Engine Oil Pan Heater: immersion type, largest wattage available, 110-volt AC.

iv. Battery Trickle Charger/maintainer: waterproof, 110-volt AC, fully automatic,

1.5 -5.0 amp, wired to maintain all batteries, and mounted in a protected location.

6. DRIVE TRAIN-CARRIER:

a. Design: To be two axles, single tire, four-by-four.

b. Transport Speed: With snowblower head in the transport position, shall be capable of maintaining a continuous forward speed of not less than 30 MPH on dry level pavement.

c. Working speed shall be any speed from .1 MPH through 15 MPH.

d. Carrier Transmission:

i. Chassis movement shall be accomplished utilizing hydrostatic drive.

ii. The main hydrostatic pump shall be directly driven from the inner frame gearbox direct or from a engine-mounted pump drive. No belt-driven pumps acceptable.

iii. A two/multi-speed motor shall be provided to achieve multiple ground drive ratios.

e. Transfer Case:

i. A 6-speed powershift transmission/transfer case shall be supplied.

ii. The transfer case shall provide for constant drive power to the front wheels with an electric over air-controlled couple/decouple to the rear axle when an additional tractive effort is needed by the operator.

iii. The operating range of the transfer case is to be displayed on the main dash LCD screen.

f. Axles:

i. The steering-drive wheel ends shall be bolted to and removable from the center section of the axle housing.

ii. The permanently lubricated Cardan drive-type joints shall be enclosed in a ball and socket.

iii. The trunnion pins shall be supported by high-capacity low friction sealed spherical bushings to insure long life and smooth steering at all cramp angles.

iv. Front:

1. The front axle shall be a single tire design, full floating, and torsion flow drive/steer type, with a planetary reduction gear design.

2. Minimum 37,000-pound GAWR.

3. Ten-inch ground clearance minimum.

4. Capable of withstanding loads of the unit being bid.

5. A driver-controlled differential lock is required in the front axle.

6. Rear:

7. The rear axle shall be a single tire design, full floating, and torsion flow drive/steer type with a planetary reduction gear design.

8. Minimum 37,000-pound GAWR.

9. Minimum ten-inch ground clearance.

10. Capable of withstanding loads of the unit being bid.

11. A driver-controlled differential lock is required in the rear axle.

v. Front and rear tread widths shall not vary more than two inches. Wheel spacers shall not be used to obtain correct tread widths.

vi. The driver-controlled differential locks shall have a dash-mounted switch for each locks.

g. Drive Lines: Shall include shielding or guards to prevent damage to specialized components, such as hydraulic components, in case of driveline failure.

7. CHASSIS:

a. GVWR: 60,000 pounds minimum.

b. Wheelbase: 120 inches.

c. Ground Clearance: Minimum of 10”.

d. Rear Ground Clearance: Minimum of 28”.

e. Frame:

i. Straight steel frame.

ii. Domex Material, 283 Brinell

iii. Yield Strength: 120,000 PSI, minimum.

iv. RBM: 2,900,000 inch-pounds minimum.

v. Overall frame width to be 39-inches nominal.

vi. Frame assembly to include cross members in addition to the engine and drive train components to provide lateral frame stability.

vii. Cross members are to be bolt-on (welded is not acceptable).

viii. Welding to the frame is not acceptable.

f. A full-width rear wrap-around bumper is required to protect the rear of the vehicle. The bumper shall have a minimum height of 24 inches to offer ample protection at the rear of the vehicle. The bumper shall include ballast as required for weight and balance. The sides of the bumper to be hinged to provide access to internal components.

g. There shall be two tow eyes mounted on the rear of the vehicle frame and a pintle hook in the center. Tow eyes shall be capable of pulling the vehicle off the roadway without inflicting damage to the vehicle. Pintle hook shall be rated a minimum of thirty-ton.

Bumper shall include to welded on hooks to accommodate the hanging of a spare tire chains.

h. Mudflaps shall be provided behind both axles and in front of the rear axle. Mudflaps shall be the full width of the tire (sidewall to sidewall) and extend to within 12 inches of the ground.

i. Steering: Front axle steering shall include integral hydraulic power assist gear type. The steering gear shall be rated for heavy-duty service. For safety, a mechanical linkage shall be maintained between the operator’s steering wheel and front axle, allowing manual steering in the event of a hydraulic or electrical system failure.

j. Four-Wheel steering is required:

i. Four-wheel steering shall be electronically coordinated through the standard steering wheel.

ii. All of the four-wheel steering systems controls are to be located in the cab easily accessed by the operator.

iii. The operator shall have the ability to select the desired mode of operation “on the go” with provisions made for safe transition from one mode to the other.

iv. The system shall include safety provisions for progressively dampening of all-wheel steer effects as speed increases, but it shall also allow full operation while the vehicle is moving at lower speeds.

v. An indicator shall be provided in the cab to display the mode selected and the rear and front wheel positions.

vi. A mechanical or hydraulic locking system shall immobilize the rear axle in the event of failure or deactivation.

vii. The driver must have the option to select one of the following modes of operation “on the go” based on the driving conditions at hand. Selector switch must be within easy reach of the operator:

1. Front Steer: When in the front mode the vehicle behaves like a conventionally steered vehicle. In this mode, the rear axle is locked and does not steer.

2. Coordinated Steer: When the front axle is steered, the rear axle turns in the opposite direction of the front, reducing the turning radius. This mode also has a dead band feature. The dead band allows the vehicle's front axle to be turned a predetermined number of degrees in either direction before the rear axle steers. The dead band will vary according to the speed of the vehicle.

3. Crab Steer: When the front axle is steered, the rear axle steers in the same direction as the front axle. This mode also has a speed-controlled variable dead band.

4. Operator Controlled Rear Steer: The rear axle shall be controlled only by a dedicated control in the cab, independent of the front wheel position. Hydraulic locks are required.

viii. Auto-center feature: Assists in relocating the rear axle to the straight-ahead position after use of the operator-controlled rear-steer mode.

ix. Switching Between Modes: The mode switch shall be always active.

x. Mode Indicator: The mode indicator feature shall consist of one of four icons on the operator display indicating which mode is selected and whether the rear axle is locked.

k. Toolbox located rear of truck

l. Tires and Wheels:

i. All tires shall be of tubeless design.

ii. This unit shall be equipped with proper-sized wheels and tires for the GVW rating of the unit being bid.

iii. Single wheels shall be furnished for the front and rear axles. Disc-type hub piloted wheels are required.

iv. SPARE tire with a mounted wheel to be shipped loose. Spare must fit both axles.

v. All tires and wheels are to be identical.

m. Suspension:

i. The unit shall have alloy steel springs of the parabolic taper leaf type for the rear axle.

ii. The front axle to be dead mounted.

iii. Spring width: 3”

iv. Spring Hardness: 42-47 HRC

v. Ratings to handle the GVWR of the vehicle.

vi. The spring hangers, pins, and supports shall be heavy-duty to give long life.

The pins shall be of the greaseable type with substantial bronze bushings.

vii. Rear axle shall have torque arms installed to axles not to U-bolts.

n. Engine Compartment(s):

i. Fully enclosed with aluminum roll up doors on left and right sides. Tiltable engines compartments and engine compartment with swing-open doors are not acceptable. Engine Compartment is to be made of steel. The cooling system, hydraulics, and other required elements of the power pack shall be protected by a hood.

ii. Shall provide adequate access to the top, left, and right sides, for maintenance.

iii. Exterior to be of raised lug or expanded metal construction.

iv. Exterior walkways shall include a minimum one-inch tubular, 42 inches in height, handrails or guardrails, and be included for steps that access the walkway.

o. Steel fenders over the front and rear wheels. Fenders to be fully undercoated.

p. A top access door, tilting hood, or removable engine enclosure with lifting eyes to accommodate engine removal is required.

8. Brakes:

a. Service Brakes: The service brakes shall be Hydraulic Disc Brake. All brakes shall be shielded.

b. Parking Brakes: The parking brakes shall be spring-actuated, air released at the rear service brake air chambers.

c. Air System:

i. Air Compressor: 13 cubic feet per minute minimum.

ii. The air system for this unit shall be equipped with a frame-mounted, heated Bendix AD-IS, air drier system.

iii. Air Filtering Device: To include a BENDIX Puraguard System Filter installed between the engine air compressor and the air dryer.

iv. Air Reservoir Tanks: Heavy-duty, steel construction, primary and secondary Installed in protected locations. Air tanks to have quick drain to drain moisture from the system, easily accessible from the side of the unit by ground personnel

v. ¼ turn valve located left side in a convenient location to facilitate filling of all air tanks. Must fill all air systems from this single shop fill location.

9. Electrical System:

a. Master Electrical Switch: Single or dual high ampere master electric switch(es) to cut off power source from battery to the ground and remainder of the electrical system. Located driver’s side, easily accessed, grouped with all auxiliary heater plugs. To include delay timer that doesn’t shut off entire system until all system checks have been accomplished.

b. Batteries:

i. Four 12-volt maintenance-free batteries with a minimum total of 4,000 cold cranking amperes.

ii. Batteries shall be installed in a frame-mounted compartment with a corrosion-resistant interior.

iii. To include jump start lugs at or near the battery box. Lugs to be shielded or enclosed to prevent inadvertent shorting. Polarity shall be marked.

c. Charging System: Alternator: Minimum 150 AMP 24-volt engine driven

d. Engine: 24VDC

e. Vehicle System: 24VDC

f. An OSHA-approved backup alarm with auto adjustment for noise level is required.

g. Wiring, general information:

i. All wiring shall be coded or continuously numbered every 18 inches minimum.

ii. Must be located for maximum protection from snow and ice buildup, grease, oil, fuel, and heat.

iii. Routing through structural members to be protected by grommets.

iv. To be secured by clips at intervals to prevent rubbing or chafing due to movement.

v. All connectors to be corrosion resistant and waterproof.

vi. All non-OEM wiring shall be encased in a sealed wiring harness.

vii. Wiring, connectors, and harnesses shall be of the highest grade offered by the manufacturer. Any optional protection from cold, moisture, or other environmental conditions shall be included

10. Lighting:

a. All lighting shall conform to FMVSS and shall include, but not be limited to, the following:

b. Two fender or cab-mounted Halogen headlights, with High/Low beam and w/ integral turn signals per FMVSS.

c. Two headlights with high/low beam and integral turn signals mounted on a light bar near the front outside corners of the cab near the leading edge. The light bar shall be vertical and made of round material to allow infinite positioning and aiming of auxiliary lighting as specified.

d. Driving Lights: Two, LED, each having a combination spot/flood beam positioned on the outermost upper forward corners of the cab preferably on a light bar. A switch, common to both lights, shall have positions for OFF/FLOOD/SPOT/BOTH.

e. Two LED cab dome/map lights. Light is to come on when opening door(s) and is to also be operated by a separate driver-controlled switch.

f. Variable intensity instrument lighting.

g. Minimum two LED floodlights to be mounted under the engine hood.

h. One switched LED flood light in the shear bolt area.

i. An LED license plate bracket and light are required.

j. Turn Signals: Self-canceling with 4-way flashers.

k. Spotlights: Two, to be located on left and right side of upper cab area. Remote controls to be provided and placed on the upper or lower dash, easily accessed by the operator.

l. Work Lights:

i. Two, LED flood mounted left and right, mounted mid-ship (center of the vehicle facing right and left), and 3,500 lumens each minimum output. These lights are to include their own switch.

ii. Two, 3,500-lumen flood, mounted left and right, rear of the unit. To be facing rearward. These lights are to include their own switch.

iii. All flood and spotlights shall have adjustable mounts (left, right, up, down).

m. LED Beacons:

i. To include two LED beacons on the roof of the cab, and two mounted on rear of engine hood.

ii. The left lens (drivers/street side) shall be amber.

iii. The right lens (passengers/curbside) shall be blue.

iv. Each light shall be synchronized to an alternating pattern using the lights “synch” wire function.

v. To include a DPDT lighted switch installed in the cab. This switch shall function as HI/OFF/LOW (light intensity).

vi. All wiring is to be enclosed in a non-metallic weatherproof loom.

11. CAB:

a. This unit shall have a fully enclosed, thermally, and acoustically insulated (83 DB. max.

as measured six inches from the driver's ear at full engine RPM), fiberglass, steel, and glass cab. Roof must be fiberglass.

b. The operator shall be positioned left hand drive configuration with right hand passenger seat

c. Cab to be 24VDC

d. One 12” LCD Screen for all vehicle readouts to be provided within reach and site of operator.

e. Two cup holders minimum shall be located in the cab.

f. Adequate space for the convenient installation of a communication radio shall be provided.

g. The cab shall be positioned behind the blower chute or volute; a cab in front of the blower is not acceptable.

h. The floor of the cab shall be insulated with a thermal-acoustical sound barrier floor mat.

The top layer of rubber matting on the floor shall be slip-resistant.

i. Heater and Defroster:

i. High output, fresh air type heater/defroster with a multispeed fan motor, mounted away from the front of the cab to minimize visibility obstructions to the front.

ii. Must keep cab temperature at 50 ℉ while the exterior is at -40 ℉.

iii. The Heater/Ventilation shall include a screened and filtered inlet vent near the cab rear for fresh air intake into the HV unit.

iv. Airflow of 650 CFM minimum required.

v. Vent controls shall be provided from panel selection including inside or outside air intake.

vi. Defroster ducts to front windshields and right and left side windows minimum.

vii. Auxiliary Heater: Minimum 30,700 BTU. To be fresh air type, independently controlled

viii. Heater hoses are to include valves near the inlets and outlets of the heater cores for use when maintenance is required on the heater preventing excessive coolant loss. Valves are to be easily accessed gate or quarter-turn full-flow type.

ix. Heating/AC system to be mounted in fiberglass roof with filter access in the fiberglass roof. Condenser and compressor to be mounted away from the cab.

j. Caged Defroster Fans: Two, upper windshield mounted, each having two speeds, independently controlled.

k. Air conditioning: To be internal. Roof-mounted is not acceptable. Integral system designed to improve windshield defogging in winter. Minimum 30,000 BTU.

l. Glass/Windows:

i. Side windows to be electric open up and down, one on each side of the cab in each door. Sliding windows are not allowed.

ii. The rear windows shall be a minimum of two (2) three sq. ft., stationary type windows.

iii. Side doors to be 50% glass minimum for optimal vision. No more than 50% glass is allowed on side doors.

iv. Side doors to include lower peep window for visual access to the ground.

v. All windows shall be safety glass.

vi. Front windshield(s) shall be heated by electrical lamination. Glue-on heat strips are not acceptable.

vii. Side door glass to be heated by electrical lamination. Glue-on heat strips are not acceptable

viii. Rear windshield to be heated by electrical lamination. Glue-on heat strips are not acceptable.

ix. Front windshield to include driver’s area sun visor.

m. Wipers:

i. Electric 2-speed minimum with variable intermittent wipers for front wrapped windshield, providing operator absolute clear line of vision, minimum 75 percent swept surface of the windshield is required.

ii. Six-quart reservoir for wet-arm wipers required. The system shall include an automated sequence that soaks the windshield and performs a wiper sweep with the press of a single button, minimizing dry wiping.

iii. Rear window wipers are required.

n. Seats:

i. The operator seat shall be air ride, heated, high back, fully adjustable in the horizontal and vertical positions, adjustable lumbar support, cloth, and load adjustable and furnished with three- point type safety belts.

ii. Custom right side adjustable armrest shall contain a joystick for the blower and independent rear steer control. Arm rest control shall include a vertical stow feature to facilitate easy egress/ingress of the operator. A gas strut or locking pin shall hold the armrest in the stowed position, with release control provided for the operator.

iii. Passenger seat shall be an air ride, high back, fully adjustable in the horizontal and vertical positions, adjustable lumbar support provided to the left of the driver. It shall also be equipped with three-point type safety belts; armrests are not required.

iv. Seat upholstery to be fabric (cloth). Vinyl is not acceptable.

o. Entry:

i. To have raised lug or expanded metal construction steps.

ii. Grab handles to be provided to assist in entering or leaving the cab, or gaining access to the catwalk(s) around the engine compartment.

iii. Cab doors shall be provided with stainless steel piano-type hinges. Hinges shall be bolted to the door and bolted to the cab frame. Hinges shall not be welded to doors and/or cab. Interior lower panels of doors shall include a nonmetallic liner to assist in sound absorption.

iv. Doorstop webbing, minimum two on each door or one webbing and one shock absorber, to prevent strong winds from “over opening” doors.

p. Rear View Mirrors: Dual West coast style exterior rearview mirrors, heated, electrically powered, a combination including upper standard lens and lower convex lens, fully adjustable, 15x8 inches minimum. Electrical for heat to mirrors to include a dash-mounted independent switch.

q. Steering wheel to be tilt and telescoping type.

r. Gauges/Indicators and Controls:

i. All gauges are to be in U.S.A. measurements such as PSI, Fahrenheit, etc.

ii. Both digital and physical liquid gauges required.

iii. Physical liquid gauges required at all points of monitoring, i.e. gearboxes, hydraulic tank, coolers, etc.

iv. A warning device is required to indicate the door open when the unit drive is engaged.

v. Two auxiliary power outlets are required near the center of the cab for access by the operator or passenger.

vi. Fault codes shall be “notify of failure” with operator attention drawn to the area of the fault.

vii. Available information shall include Speedometer, odometer, tachometer, hour meter, voltmeter, ground speed, air pressure, ambient temperature, blower ribbon speed, blower impeller speed, and fuel level. Must include a pyrometer for exhaust temp reading.

viii. Warning Icons shall be required for: Low Air Pressure, ABS failures, engine stop, check engine warning, low voltage, engine temperature, engine oil pressure, engine air intake restriction, parking brake applied, traction lock engaged, washer fluid level low, hydraulic temperature, hydraulic level, left and right turn, and high beam.

ix. All switches, gauges, and controls to be properly identified.

1. All gauges and switch identifications are to be backlit on in-cab screen.

s. Horn: Dual air or electric with a minimum of 113 decibels each.

12. DIAGNOSTICS:

a. The electronic control system shall include and enable diagnosis of chassis and engine systems utilizing the 12” LCD dash display. The system shall include the following at a minimum:

i. Direct readout of codes on the display.

ii. Message area on 12” LCD to display an error message to the operator as any system function fails.

iii. Real-time operational indicator of system function on diagnostics/maintenance screens.

b. There shall also be diagnostic connection ports for advanced chassis and engine diagnostics.

13. HYDRAULICS:

a. For high-speed transport, hydraulics shall be able to lift the blower head assembly completely off the ground.

b. Hydraulic Reservoir(s):

i. Designed for adequate cooling and shall be properly baffled.

ii. Tank size: As per manufacturer recommendation. Tanks must include internal deaeration and internal cooling mechanisms.

iii. Suction strainer with sump area and provisions made for easy cleaning.

iv. Sight gauge easily visible.

v. Equipped with a filler neck with removable strainer basket and air vent.

vi. Drain to be equipped with a ¼ turn ball valve. An extension hose, or piping, may be required to allow draining of oil into a bucket or pan that would be positioned at ground level. The ball valve, end of the hose, or piping would require a cap or plug.

vii. Two separate tanks; one for hydraulic and one for hydrostatic system

c. Hydraulic Filtration: 10 microns or finer return side filtration required, with an additional charge loop filter required. R e t u r n filter may be tank mounted or exterior- mounted spin-on type. Mounting location, check valves, or quarter-turn full flow valves shall be utilized for both to minimize fluid loss during servicing.

d. Hydraulic Pumps:

i. The pump stack shall be direct driven by the crankshaft utilizing a direct couple pump drive and shall have constant power input available when the engine is running.

e. Hydraulic hoses are not to enter the operator’s cab.

f. Multi-Coupling Plate:

i. A vented coupler manifold is to be used to release residual pressure before disconnecting hydraulic quick couplers. It shall also allow for displacement of fluid in the lines during connection.

ii. No more than six hydraulic connections are to be made with each manifold. If more than six lines need to be connected, additional manifolds are to be used (or a Multi-Coupling Plate) on all hydraulic lines that need to be separated from the carrier when an attachment is removed.

iii. To be STUCCHI

g. Hydraulic cold start cut out.

14. SNOWBLOWER:

a. To be a heavy-duty, two-stage, high-capacity system with a helical ribbon and impeller capable of producing 7,500 TPH (tons-per-hour) with a casting distance as measured from the blower to the point of maximum deposition under a no-wind condition of up to 150 feet based on snow density of 25 pounds per cubic foot.

b. Drive System:

i. Drive Line for impeller: To be heavy-duty, compatible with torque ratings commensurate with the load imposed.

ii. Impeller drive shall be direct mechanical.

iii. Helical ribbon drives to be mechanical.

iv. Shear pins shall be located at the furthest point from the drive mechanism to minimize damage to drive train components. The shear pins shall also incorporate shear pin bushings with shoulders. Shear pins are to include a relief cut in the shear area (standard off-the-shelf bolts are not acceptable).

v. Shear flanges to include grooves to allow a drive socket to be used to install shear pins

vi. Cut-out clutches not acceptable

vii. SPARE Shear Pins: To include twenty-five master and twenty-five ribbon shear pins.

c. Blower Head

i. The ribbon housing shall be fabricated of heavy gauge, high wear, welded alloy steel with high-alloy reinforced skid shoes.

ii. Side plates of minimum ½” AR500 steel.

iii. Minimum 10-gauge moldboard suitable for the type of expected service.

iv. Heavy duty side cutter extensions of AR500 steel with three horizontal support gussets

v. Two ½” AR500 cutter bars to be bolt-mounted on each side with extensions to match the width of the plow head after the side cutter extensions. To match cab height.

vi. Top of housing to be reinforced with 2x8 rectangular tubing, full width

vii. Scraper blade Black Cat Blades, two-piece, full width

viii. Two skid shoes behind plow head, adjustable

ix. Two skid shoes on plow side plates

x. Skid shoes replaceable.

xi. Heavy duty pickup points on 4 corners of head

d. Helical Ribbon:

i. The helical ribbon shall have a minimum diameter of 60 inches.

ii. The helical ribbon shall be two-piece and driven from the center.

iii. There shall be a minimum of two bearing supports, one at each end of the reel.

iv. The ribbons shall be made from 8-1/2 “T1 steel with a minimum thickness of ½ inch.

v. The reel shall be made from 1-1/2” A36 Steel with full length gusseting for maximum strength.

vi. Ribbons to have diamond welded gussets where they meet the end rings.

vii. The ribbon shall be constructed with a serrated curb ring.

viii. Curb rings bolt-on, 4-piece

ix. End rings to include Ice scraper on outside edge.

x. The curb ring shall be made of the same material as the ribbon sections. A minimum of clearance shall exist between the rotary headbox and the ribbon to reduce snow plowing and carryover.

xi. The cutting width shall be 128 inches.

xii. All hardware attaching the helical blades to the blade supports shall be grade 8 with locking flange nuts.

xiii. Ribbon speed shall be between 90-100 RPM @ full engine rpm.

e. Impeller Configuration:

i. The impeller system shall have a minimum diameter of 72 inches.

ii. Minimum depth of 24 inches.

iii. The backplate shall be a 3/8-inch minimum thick plate made of AR500 material.

iv. It shall be designed to be consistent with the capacity of the in-putting ribbon.

v. The opening, blade diameter, and speed ratio shall ensure proper snow flow and discharge to the casting chute.

vi. The six impeller blades must be replaceable (bolt-on), made from 0.50-inch thick, T-1 steel, and be attached with countersunk fasteners.

vii. All blades shall be constructed and balanced to be resistant to vibration and shock damage caused by high-speed ingestion of foreign objects.

viii. The impeller shall be driven by direct mechanical means.

ix. Shear bolt protection shall be provided but must be located behind the rear face of the impeller housing in an area that includes lighting for field fix of broken pins.

x. Shear protection located within the normal path of snow through the blower head is not allowed.

f. Volute

i. Volute housing to be supported by four lower and three rear polyurethane guide wheels.

ii. Volute to be rotated via low-speed high torque brake motor.

1. 2” Keyed output shaft

2. Valving located on chassis, blower head mounted valving not acceptable.

3. Must include relief valve to avoid over-torquing the motor.

4. Brake Torque: 14,000 lb-in

iii. The casting chute assembly shall rotate in a vertical plane to cast snow to the left or right side of the vehicle through a minimum arc of 125 degrees.

iv. It shall flat cast to the right.

g. Gearboxes

i. Center drive gearbox to have 3.21:1 drive ratio.

1. To have dipstick for quick oil check.

2. Must have front nose cone to assist in cutting through hardened snow.

3. Must be supported with rectangular tubing on both top and bottom with angled gussets.

4. To use Spicer 5-281 style drivelines

ii. Rear plow 2nd stage gearbox to be 2.2-2.7:1 drive ratio.

1. Equipped with breather, fill point, and drain plug.

iii. In frame 1st stage gearbox to be 3.3-2.6:1 drive ratio.

1. Equipped with breather, fill point, drain plug, integrated cooling system, through drive for pump drive, and air clutch.

iv. The blower drive shall include an air clutch.

v. Clutch engagement shall be electric over pneumatic actuation and offer protection against engaging clutch when blower engine is over 800 rpm.

vi. Clutch engagement selection shall automatically engage ribbon drive in the forward direction.

vii. For safety, the clutch/ribbon engage button shall be illuminated GREEN when activated and the ribbon status icon on the LCD screen will indicate ribbon status as a visual reminder to the operator of the status.

viii. The clutch shall automatically disengage when the engine is shut off to avoid attempts at startup with the blower head engaged.

ix. A two-stage gear reduction system shall be provided between the blower engine and the impeller to provide proper torque and speed at the impeller while allowing the engine to operate at the RPM providing maximum efficiency.

x. The first gear reduction shall be in a gearbox directly downstream from the clutch.

xi. It shall be a single-speed type box, air actuated

xii. Protective shear pin location shall be between these two separately mounted gearboxes.

xiii. Shear plates to be provided by YNP

xiv. The gearboxes shall include helical gears with a pressurized lubrication system and exterior cooling loop system.

xv. Driveline shall be Spicer 1810 Series. Twenty-Five spare sets of shear bolts, including bushings with shoulders, shall be supplied with the unit.

15. Hitch:

a. Attachment assembly shall mount onto the front of the carrier utilizing a quick attach hitch system operated by one person.

b. The blower hitch shall provide low friction, free flotation, shock-absorbing, and weight transfer for the blower head (weight transfer, is required for the proper functioning of the blower).

c. The low friction, free flotation is required independent of blower chassis for vibrations and bounce considerations and to accommodate surface irregularities.

d. A parallel or unequal arm system with a minimum of four horizontal pins shall be used.

e. The pair of hydraulic cylinders shall also “free float and dampen” the parallel arms of the hitch to minimize blower bounce at high vehicle speeds.

f. Lift and Weight Transfer System:

i. The rotary head assembly shall have a hydraulic provision for raising the head from the pavement.

ii. The hydraulic lift mechanism shall be fully operable from the cab.

iii. The rotary head assembly shall automatically lift when the transmission is put into reverse. Must include a switch in cab to turn this feature on/off.

iv. Minimum ground clearance shall be eight inches under the leading edge when the rotary head is at maximum height.

v. Rotary head drive system shall not bind, rub, or vibrate excessively when the head is raised to maximum height and shall be able to travel a minimum of 2-inches below ground level with positive down pressure to clean out surface depressions.

vi. To maximize traction in the work mode, the blower shall be equipped with a weight transfer system that automatically maintains 40-60 percent of the blower head weight on the front axle of the chassis. This shall be accomplished hydraulically by sensing the system pressure and continually adjusting the pressure via electronically controlled hydraulic metering valves.

16. Dimensions:

a. Overall height, 148 inches, maximum.

b. Overall transport width, Chassis 103 inches, maximum.

c. Transport width, with Blower Head, 128 inches maximum.

d. Overall height blower head, 92 inches, maximum.

e. Turning diameter, outside wall to wall, utilizing 4-wheel steer 94 feet, maximum.

17. Weight and Balance:

a. Balance: The unit must be able to stop transversely on a 30 percent grade with no danger of overturning.

18. Training:

a. Equipment training will be required for a minimum of eight hours. Training will include a minimum, but not limited to, the following:

i. Equipment limitations.

ii. Operator maintenance.

iii. Before operations checks and lubrication.

iv. Safety.

v. Cold weather operations.

vi. Jump starting.

vii. Welding on equipment.

viii. Towing or transporting equipment.

ix. Instruments and controls.

x. Gauge interpretation.

xi. Equipment operation, Do’s, and Don’ts.

xii. Attachment operation, Do’s, and Don’ts.

xiii. Electronics.

xiv. Electrical.

xv. Hydraulics.

xvi. Air system.

xvii. Drive train.

xviii. Engine and transmission electronics.

19. Miscellaneous:

a. A 10 lb. ABC fire extinguisher shall be mounted either inside the cab or within quick reach on the machine.

b. VHF Radio:

i. Blue tooth capable radio.

ii. To include location for radio installation by the National Park Service.

c. Paint:

i. Color to be manufacture’s standard safety color.

ii. Metal portions of all snow-heads facing the operator shall be flat black or flat grey to minimize glare.

iii. Cab to be finished with cataphoresis coat (E-coat)

20. Warranty:

a. Engine – Two year

b. Transmission – One Year

c. Snow Blower OEM - One Year

d. Hydraulic – One Year

NOTE: Quotes must meet or exceed the salient characteristics and must provide all pertinent information for the product including a detailed specification sheet that show the specifications provided meet the salient characteristics outlined in the specifications. Note: Simply printing off the specifications and stating yes next to the specification does not mean the item meets the specifications, the vendor needs to provide the documentation proves the same.