Service Manual

ManualsBrandsToro ManualsRiding ProductsReelmaster 7000-D 4-Wheel Drive Traction Unit

Reelmaster 7000 Hydraulic System

Page 4 -- 43

NOTE: When in reverse, pressure reducing valve (PR)

limits the pressure to the rear axle motor to 450 PSI (31

bar) so the rear wheels will not scuff the turf.

Procedure for Traction Circuit Pressure Reducing

Valve(PR)PressureTest

1. Make sure hydraulic oil is at normal operating tem-

peraturebyoperatingthemachinefor approximatelyten

(10) minutes. Make sure the hydraulic tank is full.

2. Parkmachine on alevel surface withthe cutting units

lowered and off. Make sure engine is off and the parking

brake is engaged.

CAUTION

Prevent personal injury and/or damage to equip-

ment. Read all WARNINGS, CAUTIONS and Pre-

cautions for Hydraulic Testing at the beginning

of this section.

3. Connect a 1000 PSI (70 bar) pressure gauge to test

fitting(portG) onrearside of4WD/2WDcontrolmanifold

under front of machine (Figs. 31 and 32).

4. After installing pressure gauge, start engine and run

at low idle speed. Check for hydraulic leakage and cor-

rect before proceeding with test.

5. Move throttle to high idle speed (2850 RPM).Make

sure that mow speed limiter is in the mow (4WD) posi-

tion. Release parking brake.

6. With seat occupied, apply brakesfullyand slowly de-

press the traction pedal in the reverse direction. While

pushing traction pedal, carefully monitor the pressure

gauge. Pressure should increase until the pressure re-

ducing valve opens.

GAUGE READING TO BE 420 to 470 PSI (29 to 32

bar).

7. Release t raction pedal, stop engine and record test

results.

8. If specification is not met, clean or adjust pressure

reducing valve (port PR) located on the right side of the

4WD/2WDcontrolmanifold(Fig. 33)(see AdjustControl

Manifold Relief Valves in the Adjustments section of this

chapterforvalve adjustmentprocedure).Recheckredu-

cing valve pressure after adjustment.

9. When testing is completed, disconnect pressure

gauge from test port. Install dust cap to test port fitting.

1. 4WD/2WD manifold 2. Reducing valve (PR)

Figure 31

FRONT

RIGHT

1. 4WD/2WD manifold 2. Test fitting (port G)

Figure 32

1. 4WD/2WD manifold 2. Reducing valve (PR)

Figure 33

FRONT

Hydraulic

System