Table 5-1. Troubleshooting - Continued
TROUBLE
PROBABLE CAUSE
REMEDY
Loss of Power
Defective shuttle valve assembly
(air leaks from exhaust port).
Replace shuttle valve assembly.
Air supply pressure ports partially
blocked (covered) or obstructed (dirty).
Unblock and/or clean air supply pressure
ports.
Leaks around piston assembly.
Replace forward o-ring seal (27) and U-
cup seal (37).
Damage to rear bumper (35).
Replace rear bumper.
Worn piston spring (40).
If either spring is shorter than 7-1/8" (181
mm), replace both piston springs as a set.
Dull tool bit.
Sharpen tool bit.
Tool Bit Stuck
Flange on tool bit is flared or otherwise
damaged.
Replace tool bit and check for damage to
balls (18) and release ring (17).
Tool bit too soft.
Use proper tool bits for pressures being
used.
Tool bit not held against work when
operating.
Do not operate Pakhammer without
holding tool bit against work.
Air pressure too high.
Reduce air pressure.
5-2
