ProcedureforRearTractionCircuit(RV)ReliefPres-
sure Test
8. When testing is completed, disconnect pressure
gauge from test port.
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
Make sure hydraulic oil is at normal operating tem-
1
2.
lowered and off. Make sure engine is off and the parking
brake is engaged.
Parkmachineonalevelsurfacewiththecuttingdeck
CAUTION
2
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.
Figure 26
4WD control manifold
Relief valve test port
1.
2.
3.
4WD control manifold under radiator (Fig. 26).
Connect a 1000 PSI (70 bar) gauge to test port on
2
4.
at idle speed. Check for hydraulic leakage and correct
before proceeding with test.
After installing pressure gauge, start engine and run
5.
6.
with the cutting deck lowered. Drive down a slope in a
forward direction, decrease pressure on the traction
pedalandmonitor the pressure gauge. Pressure should
increase until the relief valve (RV) lifts. Record test re-
sults.
Operatetheengineatfullenginespeed (2870RPM).
Operate the machine in 4WD (not transport speed)
1
Figure 27
1.
Manifold: lower side
2.
Relief valve (RV)
GAUGE READING TO BE 750 PSI (52 bar)
(approximate).
7.
of the 4WD control manifold (Fig. 27). Adjustment of the
relief valve can be performed as follows:
Relief valve (RV) is located on the lower, front side
1
NOTE: Do not remove the relief valve from the hy-
draulic manifold for adjustment.
A. To increase relief pressure setting, remove cap
on relief valve and turn the adjustment socket on the
relief valve in a clockwise direction. A 1/8 turn on the
socket will make a measurable change in relief pres-
sure (Fig. 28).
2
B. To decrease pressure setting, remove cap on re-
lief valve and turn the adjustment socket on the relief
valve in a counterclockwise direction. A 1/8 turn on
the socket will make a measurable change in relief
pressure (Fig. 28).
C. Recheck relief pressure and readjust as needed.
Figure 28
1.
Relief valve cap
2.
Adjustment socket
Groundsmaster 4100--D
Page 4 -- 39
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
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|
| Document Type | Service Manual |
| Language | English |
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At only 700mm wide the Mini Dumper is even at home on tight access
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mower about the yard. The US will be getting a revised 2011 Jeep Wrangler but the diesel option will not be offered in the United States.