user manual

Groundsmaster 4100--D Hydraulic SystemPage 4 -- 43

Procedure for Cutting Deck Circuit Pressure Test

1. Make sure hydraulic oil is at normal operating tem-

peraturebyoperatingthemachineforapproximately10

minutes. Make sure the hydraulic tank is full.

2. Parkmachineonalevelsurfacewiththecuttingdeck

loweredandoff.Makesureengineisoffandtheparking

brake is engaged.

CAUTION

Prevent personal injuryand/or damageto 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 installingpressure gauge, startengine andrun

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 deckand shutoffengine. 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. Right wing deck circuit pressure test port

Figure 32

1. Left wing deck circuit pressure test port

Figure 33

Hydraulic

System