Toro Groundsmaster 4000-D Service Manual page 77

Procedure for Cutting Deck Circuit Pressure Test
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
2. Park machine on a level surface with the cutting
decks lowered and off. Make sure engine is off and the
parking brake is applied.
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 manifold test port for the deck
to be tested (Figs. 31, 32 and 33).
CAUTION
Keep away from decks during test to prevent per-
sonal injury from the cutting blades.
4. Start engine and move throttle to full speed (2870
RPM). Engage the cutting decks.
5. Watch pressure gauge carefully while mowing with
the machine.
6. Cutting deck circuit pressure should be as follows
and will vary depending on mowing conditions:
LH Deck: 1000 to 3000 PSI (69 to 207 bar)
Front Deck: 1000 to 3000 PSI (69 to 207 bar)
RH Deck: 1000 to 2000 PSI (69 to 137 bar)
7. Disengage cutting decks. Shut off engine and record
test results.
8. When testing is completed, disconnect pressure
gauge with hose from manifold test port.
Groundsmaster 4000--D
1. Front deck circuit pressure test port
1. Right deck circuit pressure test port
1. Left deck circuit pressure test port
Page 4 - - 43
1
Figure 31
1
Figure 32
1
Figure 33
Hydraulic System