2012 Patrol Truck Hydraulics Specs.doc

2012/13 Patrol Hydraulics Spec Directional Control Valve & Pump Specifications

1.0 Directional Control Valve: Sauer Danfoss PVG32 preferred or approved equal. The valve must be pre-compensated, proportional and load independent.

2.0 Pressure and Flow: each valve must be settable for pressures up to 5,000psi and flow ratings up to 35gpm. Valve must be of laminar flow design for minimal pressure drop. Valve must have adjustable flow control on both sides of the spool.

3.0 Reliefs: the valve must include necessary adjustable reliefs:

a) Work port reliefs as specified in each section;

b) Load sense reliefs for true pressure limiting.

4.0 Actuation: valve must be able to be actuated manually, or electrically;

a) Electric Actuation: must be controllable with a PWM signal for full proportional or on/off operation from one coil. Separate coils not acceptable.

1) Coils shall have Deutush female plugs located at end of coil

2) Wiring to the actuator must utilize IP69 rated harnesses.

3) Duty Cycle: 100%

4) PWM actuator must be mountable on either side of the valve;

5) Spools to have the heavier centering spring (Part # 155L7504)

b) Selectable actuation: valve must be able to accommodate any pair of “manual or electrical actuation” connections on the same valve body without modification of either actuation hardware.

5.0 Modular Design:

a) Valve must be of a closed spool design for reduced contamination and be field interchangeable.

b) Valve assembly must accommodate up to 13 work sections per group.

c) Valve must be available in either open or closed center configurations.

6.0 Mounting Choices: valve must be mounted with the work ports facing down.

Piston Pump Specification

1.0 Piston Pump: Eaton 420 Pump, P/F comp, 80cc CCW, side port, 1.25 keyed shaft, 2/4 bolt C flange with dump valve de-stroke option or approved equal. The pump must be an open circuit, axial piston design.

2.0 Power and Load Sensing: The pump will provide power matching of pump output to system load demand, maximizing efficiency and improving load metering characteristics of any directional control valve installed between the pump and the load.

Pump must be load sensing providing only the amount of flow needed by the load. At the same time, the pump operating pressure must adjust to the actual load pressure plus a pressure differential required for the control action.

3.0 Operating Pressure Range: the pump must be able to handle pressures to 280 bar (4,000 psi) continuous and 320 bar (4,600 psi) intermittent. The pump must have a B10 bearing life of 3320 hours at rated mobile conditions, reducing operating costs and extending operating life (with high load bearings and a stiff drive shaft.

4.0 Lubrication and Wear: the pump must feature a saddle-type swash plate with steel-backed polymer bearings. The swash plate features a pressure lubrication passage to reduce wear and further support internal loads. A single control piston reduces forces acting on the swash plate, resulting in reduced package size, which allows pump installation into tighter locations.

5.0 Pump Noise: The pump must operate at a level of quietness that exceeds the requirements of today’s work conditions. The pump must include a bimetal timing plate to improve pump filling characteristics which, in turn, reduces fluid-borne noise and extends pump life.

6.0 Mounting Choices: Pump will be mounted to DOT mounting plate at front of engine utilizing Spicer drive shaft (Part # 9553-SF) with proper angle of installation. The pump must offer mounting flanges in SAE and ISO configurations, and ports are offered in SAE and ISO tube and flange versions. Side-or-end-ported models must be available to facilitate plumbing and help fit the pump to our space. Multiple drain ports allow many mounting orientations must be standard.

7.0 De Stroke option: The pump must incorporate low oil de-stroke function. This function must be mounted sandwiching the pump housing and the pressure and flow control. When the hydraulic system senses a low oil situation the de-stroke valve will put the pump in the neutral position and return oil back to the reservoir through the case drain.

Bid Sheet Item 1:

Standalone Spreader Control, in compliance with the attached specifications and including all necessary wiring, sensors, hydraulic and sensor pigtails, junction boxes, power cable(s), liquid pump driver(s), Road Watch SS Road Temperature Sensor with Adapter, if applicable, data storage.

Price per truck:

Note: Items 2 through 5 will be based upon the specific components on individual trucks. These will include some combination of the following: plow up/down, plow left/right, front wing, rear wing, shelving, dump body, under-body scraper, spinner, auger and pre-wet.

Item 2: Directional Control Valve, including 7 sections, manual controlled in full compliance with the attached specifications. (Estimated amount 11)

Item 3:

: Directional Control Valve, including 8 sections, manual controlled in full compliance with the attached specifications. (Estimated amount 9)

Item4: Directional Control Valve, including 9 sections, manual controlled in full compliance with the attached specifications. (Estimated amount 4)

Item 5: Directional Control Valve, including 12 sections, electrically controlled joy stick in full compliance with the attached specifications.

(Estimated amount 1) Price per truck:

Item 6: : Directional Control Valve, including 13 sections, electrically controlled joy stick in full compliance with the attached specifications.

(Estimated amount 1)

Training shall include the following:

Hydraulic:

1. Hydraulic control valve operation, trouble shooting, valve pressure settings & component identification

2. Hydraulic pump operation, trouble shooting, pump pressure settings & component identification

3. Understanding the systems functionality capabilities, analyzing, diagnostics, troubleshooting and identify system failure.

Spreader Control:

All training shall include a minimum of 4 hours of training to take place within three (3) Maine DOT Regions within the State. Training shall take place between the first week in October and last week in December each year, for the next 5 years.

Any and all training must be preformed by a factory certified trainer and not by sales personnel unless otherwise approved by DOT.

Training Price Required Separate: $__________________ Warranty

a. Manufacturer’s standard warranty of 1 year free of defects.

b. Please state terms and conditions of warranty with bid proposal.

c. Manufacturer’s warranty will start with the “in service date” provided my Maine DOT.

General

a. Bidders shall supply a specification sheet with their bid proposal

b. All bid pricing to include shipping and delivery to Maine DOT Wade Street, Augusta Maine 04330

c. Delivery schedule and packaging instruction will be discussed with awarded bidder at DOT Fleet Services preproduction meeting.

Exceptions and Questions: All exceptions must be asked during the bid period by submitting your requests and / or questions through the Question and Answer link on the Solicitation Details View page. Your answer will appear there as well. It is the vendor’s responsibility to log in to view all questions and answers posted there. Questions and answers obtained any other way will not be valid for this RFQ.