TEST NO. 1: Checking Traction Circuit Working Pressure or Relief Pressure
WORKING Pressure Check:
1. Make sure hydraulic oil is at normal operating tem-
pe
rature by operating machine for approximately 10
mines.
2. Lower cutting units, engage parking brake and stop
th
e engine.
3. Raise seat to get access to hydraulic test fittings.
Remove access cover from in front of auxiliary pump.
4. Install a 10,000 PSI gauge with extension hose onto
the traction circuit quick disconnect fitting for the func-
tion to be checked. Put gauge and hose through open-
ing below seat in front of auxiliary pump so gauge can
be observed while sitting on seat.
5. Operate machine while monitoring gauge.
RANGE OF TESTER READINGS: 100 - 5100 PSI
RELIEF Pressure Check
Move machine to an open area away from
people and obstructions.
CAUTION
6. Set traction pedal stop for minimum ground speed
(1 mph).
7. Start the engine and move throttle to full speed
(2500 rpm).
8. Release parking brake.
9. Engage the traction pedal to start machine in motion.
10. Maintain traction pedal engagement while momen-
ta
rily engaging the brakes to bring the unit to a halt and
read gauge.
TESTER READING TO BE 5000 ± 10
0 PSI.
Figure 9
(Eaton pump)
1. Traction FORWARD test port
2. Traction REVERSE test port
1
Figure 10
(Sundstrand pump)
1. Traction FORWARD test port
Testing Page 4 - 24 Reelmaster
®
335-D
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