Procedure for Traction Circuit Relief Pressure Test
Make sure hydraulic oil is at normal operating tem-
2
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
CAUTION
1
Move machine to an open area, away from people
and obstructions.
Figure 15
1.
Forward traction port
2. Left front wheel
2.
Drive machine to an open area, lower cutting units,
turn the engine off and engage the parking brake.
2
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.
1
3.
port for function to be checked (Fig. 16).
Connect a 10,000 psi gauge to traction circuit test
Figure 16
1.
Reverse traction port
2.
Right front wheel
4.
+
Starttheengineandmovethrottletofullspeed(2730
30 RPM). Release parking brake.
5.
traction pedal in the appropriate direction. While pu-
shing traction pedal, look at pressure reading on gauge:
Sitonseat,applybrakesfully,andslowlydepressthe
GAUGE READING TO BE:
Forward: 4000 PSI
2
Reverse: 5000 PSI
6.
If traction pressure is too low, inspect traction pump
reliefvalves (Fig.17).Clean orreplace valves asneces-
sary. These cartridge type valves are factory set, and
are not adjustable. If relief valves are in good condition,
traction pump or wheel motors should be suspected of
wear and inefficiency.
3
1
Figure 17
1.
2.
Forward relief valve
Reverse relief valve
3.
Traction pump
Groundsmaster 4000--D
Page 4 -- 27
Hydraulic System (Rev. B)
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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