7. Repair & inspection
7.1 Periodic Maintenance (Every 100 hours)
1) Remove the tool and all grease from the bushing
Do not use a pressure washer, steam or solvents as they damage the seals.
Chuck for chips or cracks inside the housing and on the bushing surfaces.
Cracks and chips could indicate that :
①
Lubrication so insufficient
②
Grease type is not appropriate
③
Blank hammering and side loading is occurring and hammer is being operated improperly.
2) Check wear on Tool Pin
Examine the shoulders and side surface.
If they are worn or deformed, rotate or replace as required.
3) Check wear on chisel holder bushing
Replace tool, bushing or both where the combined wear exceeds 5mm.
Some bushings are grooved to provide even grease distribution.
Replace the bushings when the grooves are worn through.
Excess bushing wear causes tool misalignment to the piston, causing premature Post driver hammer failure.
4) Replace damaged or worn parts
Then wipe all components clean, including the lubrication port.
Hand grease the tool shank and inside the chuck bushings before placing it back into the hammer.
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