Procedure for Cutting Deck Circuit Pressure Test
Make sure hydraulic oil is at normal operating tem-
1.
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic 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
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.
Figure 31
Front deck circuit pressure test port
1.
3.
draulic hose attached to manifold test port for the deck
to be tested (Figs. 31, 32 and 33).
Install 5000 PSI (350 bar) pressure gauge with hy-
CAUTION
1
Keepawayfromdecksduringtesttopreventper-
sonal injury from the cutting blades.
4.
RPM). Engage the cutting decks.
Start engine and move throttle to full speed (2870
Figure 32
1.
Right deck circuit pressure test port
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)
7.
Disengage cutting decks. Shut offengine and record
test results.
1
8.
gauge with hose from manifold test port.
When testing is completed, disconnect pressure
Figure 33
1.
Left deck circuit pressure test port
Groundsmaster 4000--D
Page 4 -- 43
Hydraulic System
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