Thomas 85 - Pressure Tests 2.5

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2
PRESSURE TESTS 2.5
The following photos show the various port locations
available on the hydrostatic tandem pump for checking
system pressure.
Completing these pressure tests will diagnose any
mechanical problem in the hydrostatic system.
Gauge Information
A
B
E
F
System
Pressure
Gauge
System
Pressure
Gauge
Charge
Pressure
Inlet Port
Case
Drain
Port
2750psi (189.6 bar)
2750psi (189.6 bar)
100-110psi (6.9-7.6 bar)
25psi (1.7 bar) maximum
WARNING
Use caution when dealing with hydraulic fluid under
pressure. Escaping fluid under pressure can pene-
trate the skin and cause serious injury.
WARNING
Raise the machine securely from the ground before
performing system checks to prevent sudden move-
ment.
D
C
C5277
Outlet
Port
Inlet
Port
E
F
A
B
C
D
C5003
Check pressures at pump inlets/outlets as shown in
Figure C5003.