Procedure for Cutting Deck Circuit Pressure Test
Make sure hydraulic oil is at normal operating tem-
1.
perature by operating the machine under load for
approximately ten (10) minutes. Make sure the hydrau-
lic tank is full.
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
1
CAUTION
Figure 39
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.
Front deck circuit pressure test port
3.
draulic hose attached to manifold test port for the deck
to be tested (Figs. 39, 40 and 41).
Install 5000 PSI (350 bar) pressure gauge with hy-
CAUTION
1
Cutting deck blades will rotate when lowered
with PTO switch in ON position. Keep away from
cutting decks during test to prevent personal in-
jury from rotating blades. Do not stand in front of
the machine.
Figure 40
Right deck circuit pressure test port
1.
4.
(2870
Start engine and move throttle to high idle speed
RPM). Engage the cutting decks.
5.
Watch pressure gauge carefully while mowing with
the machine.
6.
and will vary depending on mowing conditions:
Cutting deck circuit pressure should be as follows
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)
1
7.
test results.
Disengage cutting decks. Shut offengine and record
Figure 41
1.
Left deck circuit pressure test port
8.
gauge with hose from manifold test port.
When testing is completed, disconnect pressure
Groundsmaster 4000--D/4010--D
Page 4 -- 51
Hydraulic System
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