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.
1
CAUTION
Move machine to an open area, away from
people and obstructions.
Figure 22
2.
Drive machine to an open area, lower cutting decks,
1.
Forward traction port
2.
Left front wheel
turn the engine off and apply 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.
traction circuit test port for function to be checked (Fig.
22
4.
Connect a 10,000 PSI (700 bar) pressure gauge to
Figure 23
1.
Reverse traction port
2.
Right front wheel
or 23).
Starttheengineandmovethrottletofullspeed(2870
RPM). Release parking brake. Make sure that trans-
port/4WD switch is in the transport position.
RIGHT
FRONT
2
5.
Siton seat,apply brakes fully andslowly depress the
traction pedal in the appropriate direction. While
pushing traction pedal, look at pressure reading on
gauge:
GAUGE READING TO BE:
Forward: 3750 to 4250 PSI (259 bar to 293 bar)
Reverse: 4750 to 5250 PSI (328 to 362 bar)
3
6.
results.
Release traction pedal and stop engine. Record test
1
7.
If traction pressure is too low, inspect traction pump
Figure 24
3.
reliefvalves (Fig.24).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.
1.
2.
Forward relief valve
Reverse relief valve
Traction pump
NOTE: Seal leakage across pilot directional valves
PD1 and PD2 in 4WD manifold can also cause low for-
ward traction pressure with reverse pressure meeting
specifications.
8.
When testing is completed, disconnect pressure
gauge from test port.
Groundsmaster 4000--D
Page 4 -- 35
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 30412, Toro Groundsmaster 4000 D |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)