PH/PHX-2 Manual
36
PROBLEM_________________________________________________________________
Hydraulic Pump does not develop pressure.
SOLUTIONS
1. Hydraulic Power Package
NOTE! Hydraulic pressure is not generated if the Motor Power Switch (X,
page 12) is OFF or the Pump Switch (Y, page 12) is in the OFF position.
With the Pump Switch in the NORMAL position, the failure of the Hydraulic Pump to
develop pressure is loss of pump suction (prime). To ensure positive prime, check the
following:
a) Motor rotation (page 19).
b) Hydraulic Reservoir is filled to the correct level (page18).
c) Hydraulic Pump Case is filled with the proper hydraulic fluid (page 51).
d) Loose Inlet Plumbing: Check that all inlet plumbing to Hydraulic Pump is
tight ensuring no air leakage into the hydraulic system.
PROBLEM______________________________________________________________
Low or zero hydraulic pressure with unusual Hydraulic Pump noises.
SOLUTIONS
1. The use of an incorrect hydraulic fluid can result is unusual noises from the pump,
excessive wear, and moisture absorption. Ensure the hydraulic oil used is from the list
on page 51. In addition, continuous excessive hydraulic oil temperature as well as
failure to change the hydraulic oil on a yearly basis will cause the oil to fail and result in
excessive Hydraulic Pump wear and unusual noises.
2. Loose Inlet Plumbing: Check that all inlet plumbing to Hydraulic Pump is tight,
ensuring no air leakage into the hydraulic system.
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