Toro Groundsmaster 4100-D Service Manual page 89

Procedure for Cutting Deck Circuit Pressure Test
1. 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.
2. Park machine on a level surface with the cutting deck
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. Install 5000 PSI (350 bar) pressure gauge with hy-
draulic hose attached to PTO manifold test port for the
deck to be tested (Fig. 37, 38 or 39).
4. After installing pressure gauge, start engine and run
at idle speed. Check for hydraulic leakage at pressure
gauge location and correct before proceeding with test.
CAUTION
Cutting deck blades will rotate with PTO switch
in ON position. Keep away from cutting deck dur-
ing test to prevent personal injury from rotating
blades. Do not stand in front of the machine.
5. Move throttle so engine is running at high idle speed
(2870 RPM). Engage the cutting deck.
6. Watch pressure gauge carefully while mowing with
the machine.
7. Cutting deck circuit pressure should be as follows
and will vary depending on mowing conditions:
LH Wing Deck: 1000 to 3000 PSI (69 to 207 bar)
Center Deck: 1000 to 3000 PSI (69 to 207 bar)
RH Wing Deck: 1000 to 2000 PSI (69 to 137 bar)
8. Disengage cutting deck and shut off engine. Record
test results.
9. When testing is completed, disconnect test gauge
with hose from manifold test port.
Groundsmaster 4100--D/4110--D
1. Center deck hydraulic manifold
2. Center deck circuit pressure test port
1. Right wing deck circuit pressure test port
1. Left wing deck circuit pressure test port
Page 4 - - 51
2
1
Figure 37
1
Figure 38
1
Figure 39
Hydraulic System