SECTION 5
TROUBLESHOOTING
July 2003
p. 5-3
05130679
Oil or Water Leaks from HP Cylinder Weep Holes
Condition and Possible Causes Corrective Action
Plunger Oil Seal Leak Check hydraulic cylinder O-ring leakage.
Check proximity switch area for oil leakage.
Remove, inspect, replace or clean hydraulic seal
(cartridge).
Water Leak at HP Plunger
Seal
Replace seal assembly.
Check plunger and follower if leak exceeds about
1 drop in 10 strokes.
Check for scratches, circumferential grooves, or
material build up on inside diameter of HP
cylinder. Polish if required.
Water Leak at Sealing
Head Seal
Check seal assembly.
Check for scratches on inside diameter of HP
cylinder. Polish if required.
Check for scratches in area of sealing head seal.
Polish if required.
Hot Hydraulic Oil
Restricted or No Cooling
Flow
Check cooling water flow to and from heat
exchanger.
Check setting of water modulating valve.
Check water pressure differential across heat
exchanger, 2.75 bar (40 psi) minimum required
for flow through the exchanger.
Check operation of water modulating valve.
Water Modulating Valve
Set High
Check and adjust setting of water modulating
valve.
Heat Exchanger Clogged Flush heat exchanger, improve quality of cooling
water.
Low Cutting Water Pressure
Low Hydraulic Pressure
Setting
Check hydraulic pump pressure setting.
Verify that hydraulic pump compensator
adjustment operates normally (clockwise
adjustment increases hydraulic pressure
setting)
Restricted or No Cutting
Water Supply
Check cutting water supply flow and pressure
Water Filter Clogged Visually check appearance of filter element.
Check water pressure at filter gage. Replace
filter element, note any improvement in
pressure gage reading under equivalent
operating conditons.
Air Trapped Bleed air from cutting water plumbing.
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