Attachment_C_-_Technical_Specification_59218-044-211T.docx

Attachment C - 59218-044-211T

STATE OF CALIFORNIA, DEPARTMENT OF TRANSPORTATION

DIVISION OF EQUIPMENT

SPECIFICATION NUMBER: 59218-044-211(T)

SPECIFICATIONS FOR: Tractor, Wheel, with Side and Rear Mowers

PURCHASE ESTIMATE NUMBER: 32-12-6412

It is the intent of these specifications to describe the minimum requirements for a standard Four-Wheel Drive Utility Tractor with Side and Rear Mowers.

The unit shall be the manufacturer's standard production model(s) and may only be modified to meet these specifications where specifically allowed. The unit may not be modified from its original configuration to meet the basic requirements of this specification. It shall be equipped with all the manufacturer's standard equipment and accessories which are part of the standard published literature. If optional equipment is identified on the invitation for bid it shall only be supplied and installed where identified on the Individual Line Item.

Only technical changes authorized by the Division of Equipment Specification Engineer in writing will be accepted. Technical changes made by any other Division of Equipment, Caltrans or State employees will not be accepted. Any interpretation of the technical drawings or specifications shall only be provided by the Specification Engineer in writing.

The unit shall comply with Caltrans Equipment Quality Standards for Electrical, Welding, Paint and Coatings as defined at: .

The technical section of this specification will consist of three parts: Tractor, standard equipment not to be modified from current factory standards as published in a factory brochure provided at the time of bid; second section, Tractor, equipment may be modified to meet the specification; third section, Mowers, Side and Rear Flail Mower Requirements.

TECHNICAL SECTION 1: TRACTOR, STANDARD EQUIPMENT SHALL NOT BE MODIFIED FROM CURRENT FACTORY STANDARDS AS PUBLISHED IN FACTORY BROCHURE AT THE TIME OF BID ADVERTIZING.

1. FRAME: The tractor shall be equipped with a full frame extending from the front axle to the rear axle. A frame or subframe that does not rely on the tractor engine or transmission to transfer load to axles is acceptable.

2. WEIGHT: The published shipping weight of the base tractor, exclusive of all implements, shall be not less than 11,000 pounds, including the enclosed cab, exclusive of the implements. Tractor shall have sufficient Gross Vehicle Weight Rating (GVWR) to carry all implements including optional variations without exceeding the GVWR of the unit or any of the Gross Axle Weight Ratings (GAWRs).

3. DIMENSIONS: The following dimensions are given to insure proper vehicle configuration, use, transport, and storage. All dimensional requirements shall be applicable to the tractor equipped with the optional mowers requested. The measurements shall be taken on level ground with the tractor and mowers in identical position as trailer mounted for transportation, the term to describe this position will be “truck transport” hereafter.

a. Width: The Tractor and all attachments shall not be greater than 119.75 inches in width in the truck transport position.

b. Length: The Tractor and all attachments shall not be greater than 25 feet in length in the truck transport position.

c. Height: The tractor and all attachments shall not be greater than 121 inches in height in the truck transport position (including beacon light).

d. Minimum Clearance: No point of the tractor or mower attachments shall be less than 8 inches from level ground.

4. ENGINE: The tractor shall be equipped with a turbo charged, diesel engine with a minimum of 130 engine horsepower (HP) and a peak torque rating of 445 lb.-ft. The engine shall have a minimum piston displacement of 4 liters. The engine shall meet Tier IV Final standards and shall be listed on a current Air Resources Board Executive Order for the “Engine Family” supplied (emission credits will not be accepted). The vendor shall supply a copy of the California Air Resources Board executive order for the engine family supplied, verifying that the engine as configured is Tier IV Final certified. Documentation is required at the pre-delivery inspection. Unit(s) will not be accepted for delivery until documentation has been provided.

The engine shall be equipped with hand and foot throttle control, a governor, factory set to engine manufacturer’s recommended RPM for tractor/mower applications and shall be electrically started and shut off with a key.

5. ENGINE GAUGES AND WARNING DEVICES: This entire section may be included in the manufacturer’s Engine Control Module (ECM). The tractor shall be equipped with visual and/or audible warning devices, in addition to gauges, to alert the operator of conditions critical to engine and equipment operation. The tractor manufacturer’s ECM shall include at minimum a Speedometer and Fuel Gauge conveniently located and visible to operator when in the operator’s seat.

All engine/hydraulic monitoring instrumentation and warning devices shall be permanently labeled to identify their functions with a simple and readable lettering style, or equivalent international symbols. All gauges and instrumentation shall be backlighted for nighttime operation.

6. TRANSMISSION: The transmission shall utilize an oil immersed wet clutch to engage the transmission. The transmission shall be capable of fully synchronized shifts within certain ranges, four speeds per range. No clutching is required to shift speed gears within range, but in order to shift between ranges, the operator may be required to engage the clutch (can be done on the go). The transmission shall have a minimum of twenty-four (24) forward and twenty-four (24) reverse gears and a “creeper” mode. The transmission shall include an electronic power reverser to allow shifts from forward to reverse and back to forward without using the clutch. At a minimum, the transmission shall provide eight (8) speeds below 1.0 Mile Per Hour (MPH) at the manufacturer's recommended RPM for tractor/mower applications and have a minimum travel speed of 0.2 MPH at the manufacturer's recommended RPM for tractor/mower applications. The tractor shall be equipped with a transmission safety device that - in the event the transmission is engaged - will prevent the engine from starting or prevent the machine from moving if the engine is started. The tractor shall also be capable of traveling at a minimum of 20 MPH when in the highest forward gear with the specified wheels and tires.

7. FRONT AXLE: The front axle shall be a Mechanical Front Wheel Drive (MFWD) equipped with a drive disconnect to disengage the drive to the front wheels and allow the front wheels to spin freely. The front axle shall oscillate, allowing the axle to tilt horizontally. The front axle shall be equipped with tubeless tires as specified. The tire and wheel load ratings shall exceed the minimum operating weight requirements of the tractor as equipped. The axle shall be of sufficient capacity to carry all imposed loads as equipped during mowing operations. The axle shall exceed the tire/wheel capacity and shall be mounted on welded steel disc rims.

8. REAR AXLE: The drive to the rear wheels shall be through a differential assembly having lockup capability. The rear wheel tread width shall be set at the maximum possible width for increased tractor stability without exceeding 119 inches. The rear axle capacity shall be adequate to support all the attachments specified under all loading conditions, shall exceed the capacity of the tires and wheels, and shall be mounted on welded steel disc rims.

9. TIRES AND WHEELS: The tractor shall be equipped with the largest available R4 radial tubeless tires on the front and rear axles that allow for the required clearances and shall have load ratings which exceed the imposed loads of the tractor as equipped in all mowing configurations – (i.e., boom extended fully) and shall be mounted on factory standard wheels. Tire load ratings used for this requirement shall be at 25 MPH, and shall be imprinted on the tire, or verified by the use of tire manufacturer charts.

The tires shall not be filled with liquid ballast for additional counterweight purposes. Flexible foam filled tires are acceptable – if one tire is filled with foam, all tires must be filled with foam, high density where needed, low density in other tires.

The wheel wells shall provide for adequate tire clearance. For the rear tires, this means vertically to the wheel wells. For the front tires, this means in all directions with all attachments mounted, and at all turning angles. The rear wheel wells shall be completely unobstructed. All dimensional and operational requirements shall be applicable to the tractor equipped with these specified tires and wheels when inflated to the tire manufacturer's recommended pressure.

10. BRAKES: The service brakes shall be foot-operated and installed to apply braking force on both rear wheels. The service brakes shall be self-adjusting, sealed and immersed in oil to protect against the influence of dust, mud, sand or water (e.g., wet-disk brakes).

Hydraulically boosted or hydraulically actuated power braking systems shall incorporate emergency braking capability to allow the operator to stop the tractor in the event of an engine failure.

The tractor shall also be equipped with a parking brake or transmission lock to prevent the wheels from rolling while the tractor is parked. A red warning light shall be installed on the instrument panel, in full view of the operator, to indicate when the parking brake is applied while the engine is running. A transmission lock type device does not require a red warning light.

11. AIR AND OIL FILTRATION: The engine air filtration system shall be a 2-stage unit consisting of the air cleaner, and two dry element type, final stage filters of the correct capacity as indicated in the engine manufacturer's published instructions. The final stage filters shall consist of a replaceable outer primary filter and an inner safety element.

An engine air intake restriction gauge shall be furnished and monitored in the operator's compartment and mounted in plain view of the operator; an electronic alarm may be substituted in place of a gauge if the alarm provides adequate time for the operator to replace the filter at the end of the day.

The engine oil filtration system shall utilize full flow filtration with a replaceable filter of the correct capacity as indicated in the engine manufacturer's published instructions.

12. EXHAUST SYSTEM: The exhaust system shall utilize a vertical exhaust stack either curved at the tip or equipped with a rain cap.

13. LIGHTING SYSTEM: The tractor lighting system shall comply with all applicable requirements as prescribed by FMVSS/CMVSS 108 and shall be equipped with the following minimum electrical lighting components:

a. Two front driving lights

b. Two front work lights

c. Two rear work lights

d. Rear tail and stop lights

e. Front and rear mounted turn signals

f. Rear license plate lamp with bracket

g. Rotator Beacon meeting FMVSS and CMVSS (Reference Whelen L31 Series with Caltrans flash pattern, part # 01-0687752-00, or equivalent). NOTE: factory unit may not be acceptable, if factory unit is to be supplied as equivalent, documentation demonstrating compliance with FMVSS and CMVSS is required prior to pre-delivery inspection.

In addition to the mentioned lighting system, the tractor shall be equipped with side and rear reflectors or reflector tape in accordance with FMVSS 108 requirements.

14. EQUIPMENT: Equipment with access doors and shields, which can be opened or removed while components continue to rotate, shall have visible or audible indication of rotation. Access doors, guards and shields that must be opened for normal servicing, shall be easily opened and closed without tools. All shields shall remain functional under the forces that would be applied by a 250 lb. individual leaning on, falling against, or stepping on them.

Three-Point Hitch: The tractor shall be equipped with a rear mounted, hydraulically controlled, category II three-point hitch in accordance with ASABE 217.12. The three-point hitch hydraulic lift system shall be furnished with float capability.

Power Take-Off: The tractor shall be equipped with an independent, 540/1000 RPM power take-off (PTO) in accordance with ASABE S203.14. The PTO shall be located at the rear of the tractor and deliver a minimum of 100 HP.

15. CAB: The tractor shall be equipped with a fully enclosed cab with key type locking doors. The cab shall be equipped with safety glass windows. The cab shall be constructed to afford the operator visibility throughout the entire operation. The cab shall be completely sealed and pressurized to protect the operator from the external environment. The cab shall include at minimum a HEPA ISO 35H rated filtration system capable of filtering out normal particulates encountered during roadside mowing operations (e.g., dust, pollen, poison oak, etc.). The cab shall be furnished with a recirculating type of heater with an integrated pressurized air conditioning system with front and rear window defrosters (defoggers). The cab shall be equipped with front and rear windshield wipers and washers.

The cab shall be equipped with a fully adjustable (fore and aft), fully padded air suspension seat with backrest and seat belt.

The cab shall be equipped with an AM/FM radio with weather band.

The cab shall be equipped with front and rear retractable sun screens.

The cab shall be equipped with a minimum of 1 cup holder.

The cab shall be equipped with a 3/8” thick right side and rear replacement polycarbonate windows to protect the operator from flying debris created by operation of mower. The right-side door may be made inoperable where required by the mounting of the mowers. The replacement windows shall feature anti-abrasion coating with integrated UV protection (Ref. Lexan® MR10 or equivalent) and shall be mounted in place of the original glass, no exterior glass with frame will be acceptable. All other windows shall be safety glass.

The cab shall incorporate a Rollover Protective Structure (ROPS) conforming to SAE J1194 standards.

16. CONTROLS: Placement of hand and foot controls shall be conveniently located to provide the operator maximum comfort. Controls, which influence the movement of the machine and the operational direction of equipment, shall conform to the requirements as established by SAE J1814 Standard “Operator Controls for Off Road Machines". Where confusion may result from the movement of a control, the effect of the control shall be clearly and permanently identified.

17. TRACTOR HYDRAULICS: A minimum of three (3) remote circuits with ASAE/ISO couplers shall be provided. Each circuit shall have a selective control valve with float capability. Only manufacturer’s factory supplied and installed circuits will be accepted. An open center, pressure compensated hydraulic system shall consist of a pressure compensated pump capable of producing minimum 21 gallons per minute.

18. MISCELLANEOUS: Miscellaneous components to be supplied and installed shall include the following:

a. The tractor shall be equipped with a vandal and theft protection package. Vandal protection shall include the engine compartment, battery compartment, and all fluid fill ports. Three (3) sets of keys shall be supplied per lock.

b. An interior rear-view mirror shall be supplied.

c. The tractor shall be equipped with rear wheel fenders to protect the operator from flying debris and excessive dust exposure created by the tires during machine operation and transport.

d. The hood shall be the full tilting type. The hood shall allow full access to the engine compartment and radiator for maintenance and cleaning. The hood shall be fully supported in the fully open position.

e. The tractor shall provide tie‑down capability at or near each of the outside front corners of the machine. Tie‑downs shall be the "D" ring type and compatible for use with 3/8-inch welded chain and hooks. The tie‑downs shall be appropriately secured to and located on the tractor to provide adequate holding strength during transport of the machine. The rear three-point hitch may be used for securing the rear of the machine for transport.

f. Electronic backup alarm. User option to turn on/off alarm is not acceptable.

g. Horn.

h. Minimum 50-gallon fuel tank.

i. Manufacturer installed toolbox.

j. A removable chaff screen shall be installed in front of the radiator. The screen shall not have a gap or mesh opening larger than 1/8 of an inch.

k. A 5-gallon fire pump shall come furnished, (Reference, 179014-1 Galvanized Fire Pump, 5-Gallon) or equivalent.

TECHNICAL SECTION 2: TRACTOR, STANDARD EQUIPMENT MAY BE MODIFIED TO MEET THESE REQUIREMENTS AS NECESSARY

19. ENGINE RADIATOR CLEARING SYSTEM: The tractor shall be equipped with a radiator clearing solution that allows the operator the ability of clearing out any mower clippings, chaff or debris that restrict air flow through radiator fins. The solution must provide adequate clearing performance and must be operable without the use of tools. The vendor shall demonstrate the use during the pre-delivery inspection. The solution shall not void the tractor warranty. The solution shall be discussed at the post-award meeting.

20. ELECTRICAL EQUIPMENT: Minimum electrical equipment shall comply with all applicable requirements as prescribed by FMVSS/CMVSS 108. The tail, stop, and directional signal lamps may be in combination. The wires to these lamps shall be in a loom or conduit. Adequate size gauge of wire to the lights shall be used in accordance with SAE standards for distance from power source and load demand. Wiring color code for lights shall comply with SAE standard J560 (b). The ends of all cut stranded conductors shall be mechanically stripped and fitted with insulated type terminals. The terminals shall be mechanically crimped securely with appropriate tool(s). All splices shall be sealed against moisture. Scotch Lock wire-type piercing devices shall not be used.

Side terminal batteries are not acceptable.

BACKUP CAMERA: A backup camera system (reference Cab Cam A-CC7M1C, or equivalent) shall be provided. Camera system shall be hard wired to the tractor electrical system (cigarette lighter plug is not acceptable). Camera shall be capable of viewing the rearmost protrusions of the tractor, inclusive of any optional implements included in this specification, and mounted to facilitate hooking up to the three-point hitch as well.

21. HYDRAULIC LINES AND FITTINGS: All hydraulic lines shall be sized as recommended by the manufacturer of the component to which they attach and shall be adequate for the use intended. All hoses and plumbing shall have a minimum number of bends and shall be free of any kinks. All bends in hoses and tubing shall be not less than the minimum radius as recommended by the hose or tubing manufacturer. Where applicable, plumbing shall be protected from external damage by truck frame and body. Any hoses routed around or through areas that may cause abrasion or cuts shall be protected as necessary. All hydraulic components and plumbing shall be mounted and supported to withstand extensive field use.

Any tubing or flexible hose used in the hydraulic system shall be approved for hydraulic use and rated for the maximum working pressure of the system. Large diameter hose shall be used for low pressure return line(s) to the reservoir. The use of black iron pipe, galvanized pipe or plastic pipe or fittings, etc. shall not be allowed in the hydraulic system, including the suction or low pressure return side, exclusive of the connection to the tank. Brass ball valves and fittings may be used in the low-pressure side of the system only. Steel pipe fittings welded into hydraulic tanks are acceptable. Only steel or stainless-steel crimp type hose fittings and ends which are approved for hydraulic use shall be used (Aeroquip or equivalent).

Hydraulic fittings on high pressure lines shall be the swivel type, steel or stainless steel, and shall be 37o JIC, NPT, SAE "O" Ring Boss, or SAE "O" Ring Flange. Fittings shall be of the proper size to match the hydraulic line to which they attach. No welding of fittings will be allowed. Compression type fittings shall not be used in the system. All threads shall be North American or Japanese Metric type threads. NOTE: Thread types shall not be mixed on the unit (i.e., thread types shall be all American or all Metric). A hydraulic filter shall be supplied in a pressurized hydraulic system that meets or exceeds the filtering requirements of all components in the system.

Quick disconnect fittings shall be the “flat faced” “dripless” type (reference Safeway FF49 Series, or equivalent).

22. WELDING: All welding shall comply with the requirements as represented in American Welding Society (AWS), D14.3‑82, and American National Standard entitled "Specification for Welding Earthmoving and Construction Equipment."

All welds shall be continuous except as noted. Intermittent or spot welds shall be spaced and proportioned to provide ample strength for the material being welded. Weld sizes not indicated shall be equal to the thickness of the least of the joined plates.

All welds shall be properly fused, displaying proper penetration and a professional finish, and must meet the qualification requirements of applicable AWS specifications. Examples of unacceptable weldments are:

Any weld failing to comply with the AWS specification or failing to pass a quality assurance inspection performed by the State, will be corrected by the manufacturer, at their expense, and be corrected off State property. The State shall determine if a weld is acceptable or deficient.

Any deficient weld shall be corrected by a welder who is certified in accordance with the requirements as established by the American Welding Society (AWS). The welder shall have the proper certification documents indicating that he/she is qualified to perform the type, size, and position of the weld performed, with the welding process utilized, and on the material being welded. The supplier will be required to supply proof of current welding certifications for personnel performing any re-welding on the unit, upon request of the State whether written or verbal.

GRINDING OF WELDS must have prior approval of the Department of Transportation, Division of Equipment, Engineering Specifications. Welds which have been ground without approval shall be subject to complete re-welding upon request, at no additional cost to the State.

When drawings are supplied, the assembly dimensions and tolerances shall apply after welding. Excessive warpage of assembled parts is not acceptable. Weld symbols on supplied drawings shall be interpreted per American National Standard Welding Symbols. In the event of the lack of a weld symbol, the best commercial practice shall prevail. The covering of welds with body fillers or similar materials is unacceptable.

NOTE: Sealant shall be applied after painting to all joints and seams not welded continuous. Seal using Sikablew-521UV Resistant, White Color Manufactured by Sika Corporation or 3M All-Around Autobody Sealant, Part Number 08500.

23. MATERIAL: Construction shall be of all new material free of rust and any defects. All components in the assembly shall be fabricated from a single piece of material. Material which is joined by welding or other means to form a single piece of stock is not acceptable. The finished product shall be free of dents and warpage. The use of any type of body filler is unacceptable. Unless otherwise noted, all bolts shall be Grade 5 or better and conform to SAE and ASTM standards. Bolt lengths shall be such that a minimum of two threads shall extend beyond the nut. Nuts shall be the locking type. Nuts and washers shall be compatible with the bolt(s) to which they are attached, as recommended by the fastener manufacturer and in accordance with SAE and ASTM standards. If requested, the supplier shall submit proof of fastener strengths.

24. METAL SHAPING: All breaks shall be free of cracks. Radii shall be at least twice the thickness of the material or in accordance with the requirements established by ASTM for the particular material being formed, whichever is greater. All holes shall be round, of the proper dimension, perpendicular to the material they are produced in, and finished smooth. Oblong holes or holes drilled, bored, etc. at angles are not acceptable. Holes and slots shall be drilled, punched, saw cut, plasma cut, or milled; torch cut is unacceptable. Sharp edges and corners on all material shall be radiused to prevent personnel injury. This includes expanded metal.

25. PAINT: The basic unit, the primary finish surfaces of any optional equipment, and other minor or incidental component parts shall be finish painted with lead-free (300 PPM LEAD MAX) standard factory color(s). The finish coat shall be free from runs, drips, sags, etc., and shall be evenly applied to provide a gloss finish. The finish or top coat shall be compatible for re-coat or touch-up with lead-free Axalta Imron Elite EX2.8 VOC, polyurethane enamel; PPG Delta DUHS; or, Sherwin Williams Genesis, equivalent color. All paint and primer shall be lead free.

26. LUBRICATION: Lubrication products used in each unit shall be compatible for top-off and refill with one of the following State contracted lubrication products:

a. Re-refined Diesel complying with ASTM D975 standard.

b. SAE 15W-40 motor oil.

c. Dexron-III, Transynd or Mercon automatic transmission fluid.

d. Re-Refined Tractor hydraulic fluid.

e. SAE 50 motor oil.

f. SAE 85W-140 gear lube.

g. NLGI #2 multipurpose grease.

h. DOT 3 brake fluid.

i. Universal Extended Life Coolant (ELC), 50/50 pre-diluted.

NOTE: The coolant change interval shall be a minimum of 5 years or 150,000 miles. Only extended life coolant shall be used; Standard coolant with a coolant filter is not acceptable.

Synthetic oils needed to maintain extended factory warranties will be used for topping off and refill when provided. ANSI and/or SAE equivalents may be used instead of brand specific lubrications. Any other specialty lubrication products may be allowed only with engineering approval prior to purchase order award. Requests must be submitted by email to the buyer.

For information regarding State contracted lubrication products, contact:

27. NOISE: Noise emitted by each unit delivered in compliance with these specifications shall comply with all California and Federal laws or regulations pertaining to maximum allowable emission of noise, both inside and outside the operator's cab, at the time of delivery of the unit. The vendor may submit documentation to demonstrate compliance with this requirement.

Units delivered may be sample tested by State personnel for noise level and must meet the noise requirements before the unit will be accepted.

28. DELINEATION INSTALLATION: Two (2) trademarked Caltrans “CT” decals shall be supplied by the State and installed by the vendor on each unit. Equipment identification numbers, maintenance class numbers, and fuel type decals shall be vendor supplied.

Vendor supplied decals shall be easily legible and black of color. Acceptable font type and size shall be approved by specification engineer prior to final application.

All decals will be installed by the vendor per Drawing Number I-59222-DE. Final location of all delineation shall be approved by the specification engineer prior to final application. The installation shall be a product of good workmanship. Replacement decals will be at the vendor’s expense.

TECHNICAL SECTION 3: MOWERS SIDE AND REAR FLAIL MOWER REQUIREMENTS:

The vendor shall provide a Side Mounted and Mechanical Rear Flail Mower in accordance with the following:

29. SIDE FLAIL MOWER ASSEMBLY: The side flail mower shall be an extreme duty, hydraulically driven unit. The mower shall have a minimum cut width of 74 inches. The mower shall be equipped with replaceable, full length skid shoes on each side and be made from hardened steel. One additional set of shoes shall be provided with each mower. The mower shall have a full width, rear mounted, gage roller. The drive ratio shall be set for optimum operation when the engine is operating at the RPM that corresponds to a PTO RPM of 540/1000.

The mower shall be equipped with general purpose, coarse type cutting knifes mounted in pairs and capable of cutting roadside brush and vegetation up to 2 inches thick. The knives for both flail mowers on this contract, shall be interchangeable. The knives shall be forged, not stamped, steel. The knives shall be mounted to a minimum 6” diameter cutting shaft. The cutter shaft ends shall be fitted with an “anti-wrap” mechanism to reduce the occurrences of debris wrapping itself around the cutter shaft. One (1) additional set of cutting knifes shall be supplied with each mower.

The mower housing and gage roller assembly shall be so constructed as to permanently or semi-permanently restrict the mowing cut height from being lowered below 4 inches above ground level. The restrictive cut height solution shall not void boom mower factory warranty. The solution shall be discussed at post award meeting.

The mower assembly shall be bolted to the mid‑section of the tractor for maximum stability and installed to provide right side operation of the mower. Welding to any portion of the tractor or tractor frame is not acceptable. The mounting shall distribute the load evenly across both sides of the frame. The mower frame shall support the full weight of the mower in the stowed position. The hydraulic cylinder(s) shall not support the weight of the mower in the stowed position.

As a minimum, the mower assembly shall be capable of operating throughout a range of 45 degrees up and 45 degrees down from a level tractor. The mower shall also be capable of mowing 45 degrees down slope while reaching over an 8-inch-high curb. The mower head assembly shall be pivoted about an intermediate draft beam mounted between the frame and the mowing head. The head shall be operated directly by a hydraulic cylinder without the use of cables. The tilt cylinder must act directly between the mowing head and the draft beam. A restrainer or regulator shall be built into the mower hydraulic tilt system to automatically regulate the lowering rate of the mower and not allow the mower to drop uncontrolled. The restrainer or regulator shall not affect the raising rate of the mower.

The mower structure (housing, deflectors, and attachments) shall be designed, fabricated, and assembled in such a manner that, under normal operating conditions or the destructive conditions encountered during sudden impacts of rocks or metallic objects, none of the component parts of the mower shall fracture, brake, loosen, or deform in a manner that will make the mower hazardous to the operator or bystanders. The flail mower shall conform to the requirements as established in SAE Standard J1001.

Permanent safety signs which indicate DANGER ‑ DISCHARGE OPENING, either through words or easily understood symbols, easily viewable from a standing position, shall be placed at or near each discharge opening. Permanent instructions shall be placed on the mower, near the opening, stating that the mower shall not be used with the deflector or the attachment removed.

The rotor drive mechanism shall provide complete shielding of all driven members to prevent inadvertent contact during normal operating procedures of the mower. The rear deflector shall incorporate a hard rubber deflector flap that is firmly attached to the rear of the mower housing to limit the path of the ejected material to a downward direction. The rubber deflector shall also span the entire width of the mower and extend to ground level when the mower is in the mowing position.

Additional counterweights may be used on the left side of the tractor if they are necessary to provide stable mower operation throughout its range. The mower assembly shall mechanically lock into a vertical transport/non-use position on level or uneven ground. Storage of the side mower shall be a one-person operation from inside the cab. A safety device shall be installed to prevent the mower from starting when in the transport position.

30. SIDE FLAIL MOWER HYDRAULICS: The mower hydraulic system shall feature a self-contained circuit for both the mowing head and positioning of the mower deck independent of the tractor hydraulics. An auxiliary front engine PTO shall power the mower and positioning circuit tandem hydraulic pump. The driveline between the front pump and front pulley of the tractor shall have u-joints at each end to eliminate stress on the front pump. The hydraulic pump and all attached lines shall be shielded or mounted within barriers for added protection. The hydraulic pump and motor shall provide optimum flow at the engine rpm corresponding to 540 rpm for the rear PTO mower. (Pump and motor charts, GPM vs. RPM, shall be supplied with the bid.) The mower hydraulic system shall be equipped with a dash mounted oil temperature gauge.

The mower hydraulic system shall be equipped with an adequate volume fluid reservoir. The reservoir shall provide flange type inlets and outlets. Pipe couplings or nipples welded to the outside of the reservoir will not be acceptable, exclusive of the supply side bung. The reservoir shall be equipped with an oil level gauge mounted where it is easily visible. The mower hydraulic system shall utilize a 10-micron replaceable element filter(s) with flow capacity which exceeds that of the pump. The filter shall be positioned so as not lose fluid while changing the filter. All hydraulic hoses shall be the SAE crimp type, high pressure hoses with corresponding SAE fittings meeting SAE 100 R17.

The hydraulic system to raise, lower and tilt the side flail mower must have float positions. Hydraulic hose and fitting sizes shall be the maximum size required by the hydraulic pump manufacturer's standard literature. Mounting or placement of any hydraulic valves or valve banks in the rear wheel wells is not acceptable.

A fan forced hydraulic cooler shall be capable of removing a minimum of 75% of the heat generated by the hydraulic system with ambient temperatures of 110 degrees F shall be supplied. The cooler shall be mounted in a location that will minimize the amount of chaff that will mat in the cooler. The cooler fans shall be equipped with a reversing switch in the cab that will allow the operator to periodically blow chaff out of the cooler or an automatic reversing fan. The bidder shall supply information or calculations showing how their system will meet this requirement.

31. SIDE FLAIL MOWER CONTROLS: Controls, which influence the movement of the mower assemblies, shall be supplied by the mower manufacturer conveniently located within the operator's compartment. These controls shall be permanently labeled appropriately to identify their functions with a simple and readable lettering style or equivalent universal symbols. The control switch used to engage the flail rotor shall be equipped with a safety device that will prevent the engine from starting with the rotor engaged. The mower cutterhead shall have an emergency shutdown switch located conveniently inside operator cab. Controls to lift and tilt the mowing head(s) shall be equipped with a float position.

32. SIDE FLAIL MOWER ACCESS DOORS/SHIELDS: All mowers with access doors and shields which can be opened or removed while components continue to rotate shall have visible or audible indication of rotation. Access doors, guards, and shields which must be opened for normal servicing, shall be easily opened and closed without tools. All shields shall remain functional under the forces that would be applied by a 250 lb. individual leaning on, falling against, or stepping on them.

33. MECHANICAL REAR FLAIL MOWER: The PTO driven mower shall attach to and be raised by the tractor three-point hitch and provide a minimum cut width of 96 inches. The rear mower shall be capable of hydraulically shifting to the right side to provide a cut overlap with the side mower cut path. If the side mower is the boom mounted type, the overlap shall occur when the boom mower is mowing as close as possible to the right side of the tractor. When hydraulically shifted to the left the mower shall tuck in behind the mowing tractor. At no time shall the side shifting affect the operation of the mower. The mower shall be equipped with replaceable, full length skid shoes on each side and a full width, rear mounted, gage roller.

The mower shall be equipped with general purpose, coarse type cutting knives mounted in pairs and capable of cutting roadside brush and vegetation up to 2.0 inches thick. The knives shall be forged, not stamped, steel. The knives shall be mounted to a minimum 6” diameter cutting shaft. The shaft ends shall be fitted with an “anti-wrap” mechanism to reduce the occurrences of debris wrapping around the cutter shaft. One (1) additional set of cutting knifes shall be supplied with each mower.

The mower housing and gage roller assembly shall be so constructed as to permanently or semi-permanently restrict the mowing cut height from being lowered below 4 inches above ground level. The restrictive cut height solution shall not void boom mower factory warranty. The solution shall be discussed at post award meeting.

The mower structure (housing, deflectors, and attachments) shall be designed, fabricated, and assembled in such a manner that, under normal operating conditions or the destructive conditions encountered during sudden impacts of rocks or metallic objects, none of the component parts of the mower shall fracture, brake, loosen, or deform in a manner that will make the mower hazardous to the operator or bystanders. The flail mower shall conform to the requirements as established in SAE Standard J1001.

Permanent safety signs which indicate DANGER DISCHARGE OPENING, either through words or easily understood symbols, easily viewable from a standing position, shall be placed at or near each discharge opening. Permanent instructions shall be placed on the mower, near the opening, stating that the mower shall not be used with the deflector or the attachment removed.

The rotor drive mechanism shall provide complete shielding of all driven members to prevent inadvertent contact during normal operating procedures of the mower. The rear deflector shall incorporate a hard rubber deflector flap that is firmly attached to the rear of the mower housing to limit the path of the ejected material to a downward direction. The rubber deflector shall also span the entire width of the mower and extend to ground level.

The rear flail mower shall come with mechanical safety stands capable of holding the weight of the mower deck while attached to tractor for the purpose of mower servicing, and inspection operations. The stands shall be capable of being securely stowed on the mower and not interfere with active mowing operations.

34. MECHANICAL REAR FLAIL MOWER ACCESS DOORS/SHIELDS: Access doors, guards, and shields which must be opened for normal servicing, shall be easily opened and closed without tools. All shields shall remain functional under the forces that would be applied by a 250 lb. individual leaning on, falling against, or stepping on them.