Procedure for Steering Circuit Relief Pressure Test
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine under load for
approximately ten (10) minutes. Make sure the hydrau-
lic tank is full.
7. If pressure is incorrect, inspect steering relief valve
in steering control valve (see Steering Control Valve in
the Service and Repairs section of this chapter). If relief
valveisoperatingproperlyandiflift/lower problemsalso
exist, flow divider in fan manifold and/or gear pump
(third section) should be suspected of wear and ineffi-
ciency.Ifsteering wheelcontinues toturnatendofcylin-
der travel (with lower than normal effort), steering
cylinder or steering control valve should be suspected
of wear or damage.
1.
2.
decks lowered and off. Make sure engine is off and the
parking brake is applied.
Park machine on a level surface with the cutting
8.
gauge from test port.
When testing is completed, disconnect pressure
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.
necta5000PSI(350bar)pressure gaugeontotestport.
Locate steering circuit pressure test port and con-
A. On Groundsmaster 4000--D machines, the test
port is located on the steering supply hydraulic tube
under the front of the machine (Fig. 49).
B. On Groundsmaster 4010--D machines, the test
port is located on the steering supply hydraulic tube
under the operator seat (Fig. 50).
Figure 49
1.
Steering circuit pressure test port (GM4000--D)
4.
Start the engine and move throttle tohigh idleengine
speed (2870 RPM).
IMPORTANT: Hold steering wheel at full lock only
longenoughtogetasystemreliefpressurereading.
Holding the steering wheel against the stop for an
extended period can damage the steering control
valve.
1
5.
mentarily hold the steering wheel against resistance.
Turn steering all the way in one direction and mo-
GAUGE READING TO BE 1300 to 1400 PSI (90 to
96
bar).
Figure 50
Steering circuit pressure test port (GM4010--D)
6.
Stop the engine and record test results.
1.
Groundsmaster 4000--D/4010--D
Page 4 -- 61
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 10176SL, Toro Groundsmaster 30446, Toro Groundsmaster 30448, Toro Groundsmaster 4010 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)