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26
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OIL LEAKAGE
Exceeding 180
°
F (80
°
C) hydraulic operating temperature reduces seal life.
A small amount of oil leakage between the tool and tool bushing at location (pr2) is
considered normal.
If oil leak is significant, locate the point of origin. Oil running down the tool may be
coming from a loose hose.
It is normal for a new seal to leak slightly until the seal seats with usage.
POINTS TO CHECK FOR OIL LEAKAGE
PROBLEM
CAUSE
REMEDY
(pr1)
Leakage through vent plug.
(Small amount is normal)
Seal in main body sleeve A.
Disassemble hammer and replace seals.
(pr2)
Leakage between tool and
bushing. Small leakage is
normal
here.
Seal in main body sleeve B.
Disassemble hammer and replace seals.
(pr3)
Leakage between main
body and valve.
O-ring between valve and body.
Loose bolts.
Replace.
Use thread adhesive, tighten.
(pr4)
Leakage between valve
body and valve top cap.
O-ring under valve cap.
Loose bolts.
Replace.
Tighten.
(pr5)
Leakage between valve
body and valve bottom cap.
O-ring under valve cap.
Loose bolts.
Replace.
Tighten.
(pr6)
Leakage between valve and
swivel.
O-ring under swivel.
Replace.
(pr7)
Leakage between hose and
swivel.
Loose or damaged hose fitting.
Tighten or replace.
(pr8)
Leakage between swivel and
flange.
Seal in swivel.
Replace.
