10
MAINTAINING THE PNEUMATIC TOOL
When working on air tools, note the warnings in this manual and use extra care evaluating
problem tools.
Pusher spring (constant force spring). Caution must be used when working with the
spring assembly. The spring is wrapped around, but not attached to, a roller. If the
spring is extended beyond its length, the end will come off the roller and the spring will
roll up with a snap, with a chance of pinching your hand. Also the edges of the spring
are very thin and could cut. Care must also be taken to insure no permanent kinks are
put in the spring as this will reduce the springs force.
REPLACEMENT PARTS:
Use only Bostitch replacement parts.
ASSEMBLY PROCEDURE FOR SEALS:
When repairing a tool, make sure the internal parts are clean and lubricated. Use Parker “O”-LUBE or
equivalent on all “O”-rings. Coat each “O”-ring with “O”-LUBE before assembling. Use a small amount of oil
on all moving surfaces and pivots. After reassembly add a few drops of Bostitch Air Tool Lubricant through
the air line fitting before testing.
AIR SUPPLY-PRESSURE AND VOLUME:
Air volume is as important as air pressure. The air volume supplied to the tool may be inadequate because of
undersize fittings and hoses, or from the effects of dirt and water in the system. Restricted air flow will
prevent the tool from receiving an adequate volume of air, even though the pressure reading is high. The
results will be slow operation, misfeeds or reduced driving power. Before evaluating tool problems for these
symptoms, trace the air supply from the tool to the supply source for restrictive connectors, swivel fittings,
low points containing water and anything else that would prevent full volume flow of air to the tool.
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