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Groundsmaster 4100--D Hydraulic SystemPage 4 -- 43
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. Parkmachineon a level surface with thecuttingdeck
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 deck manifold test port for the
deck to be tested ( Fig. 31, 32 and 33).
4. After installing pressure gauge, start engine and run
at idle speed. Check for hydraulic leakage and correct
before proceeding with test.
CAUTION
Keep away from deck during test to prevent per-
sonal injury from the cutting blades.
5. Operate engine at full 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.
1. Center deck hydraulic manifold
2. Center deck circuit pressure test port
Figure 31
1
2
1. Right wing deck circuit pressure test port
Figure 32
1
1. Left wing deck circuit pressure test port
Figure 33
1
Hydraulic
System