EN
77-3139-R2 (1/2019)
10 / 12
www.carlisleft.com
CONDITION
CAUSE
CORRECTION
Air motor sluggish or inefficient.
Air motor muffler (40) is clogged.
Clean or replace the felt (43).
Replace muffler (40) if necessary.
Air motor needs lubrication or cleaning.
Lubricate (see "Air Motor Lubrication"
section). Disassemble and clean per parts
replacement instructions.
Motor vanes need replacing or
contaminants present in motor chamber.
Disassemble, clean motor per parts
replacement instructions. Replace worn
vanes.
Air motor bearing (89) worn.
Replace bearings per parts replacement
instructions.
AIR MOTOR REBUILD
(SEE EXPLODED VIEW OF 31-437-K ON PAGE 9.)
Do not pry dead end plate (91) or drive end plate (97) from
air motor body (94) with a screwdriver. This will dent the
surface of the body and plates and causing leaks. A puller tool
should be used to remove the plate from the motor body
while maintaining the positions of the shaft.
Always install new gaskets (92) when re-assembling air motor.
Assemble the end plates to the body using an arbor press with
a pusher acting on both races of the bearing while rigidly
supporting the opposite (drive) end of the shaft.
GEAR BOX OIL
The gearbox (86), page 9, contains a special high quality gear
oil, made specifically for worm drive gearboxes. The oil that
was installed at the factory should be sufficient for the life of
the gearbox. If oil should ever be required, drain the gearbox
completely. Then add 80mL [2.7 oz] of 31-439 gear oil.
Do not substitute another gear oil or it may result in damage
to your equipment.
!
WARNING
AIR MOTOR DRIVE SERVICE CHECKS
