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Groundsmaster 4000--D Hydraulic System (Rev. B)Page 4 -- 29
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 alevel surface withthe cutting units
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 test gauge with hydraulic hose attached to
manifold test port for the deck to be tested (Fig. 18, 19,
and 20).
CAUTION
Keep away from decks during testto prevent per-
sonal injury from the cutting blades.
4. Start engine and move throttle to full speed (2730 +
30 RPM). Engage the cutting units.
5. Watch pressure gauge carefully while mowing with
the machine.
6. Cutting deck circuit pressure should be from 1000 to
3000 PSI and will vary depending on mowing condi-
tions.
7. Disengage cutting units. Shut off engine.
8. Disconnect test gauge with hose from manifold test
port.
1. Front deck circuit pressure test port
Figure 18
1
1. Right deck circuit pressure test port
Figure 19
1
1. Left deck circuit pressure test port
Figure 20
1
Hydraulic
System