6
SM-97
Air Tools should be handled with reasonable care when servic-
ing. It is important that the correct tools and fixtures are used
when servicing this Air Tool. Order replacement parts by part
number, model and serial number of tool. To maintain Torq-Air-
Matic efficiency, periodic checks should be made of the follow-
ing:
Rotor Blades - Generally these are the only parts requiring
replacement after long service. Always replace the rotor blades
in a set of 4 only, whenever they are broken or cylinder edge is
gouged, worn uneven or worn down 1/16". This would cause the
blade edges to be 1/16" below top of its slot in rotor drum.
Cylinder and Rear End Plate - Replacement is required only if
part is broken or rubbing surfaces are gouged.
Ball Bearing - normally these ball bearings should not require
additional lubrication during tool life. However, whenever tube
roller is disassembled for servicing, the motor ball bearings
should be lubricated with light oil (SAE #10) while the drive
ball bearings should receive a small amount of bearing grease.
All ball bearings should turn smoothly and freely with no notice-
able looseness. There should be a snub fit with no shake both in
their housings and on their shafts. However, the front motor ball
bearing is a mild press fit on its rotor shaft.
Note: Dirty or gummed up ball bearings should be cleaned in
kerosene and flushed with clean light oil (SAE No. 10). DO NOT
USE AN AIR BLAST. After flushing, re-lubricate as specified. Be
sure both plastic seals are properly replaced on front drive ball
bearing.
Intermediate Spindle Assembly and Drive Spindle Assembly - Do
not disassemble planet gears from their spindles unless the gears
do not move freely about their planet pins. Be careful not to
lose any one of the nine needle rollers assembled within each
planet gear. Lubricate planet gear and needle rollers with a good
bearing grease only.
Caution: Note position of planet pin milled step in relation to
steel retaining ring or turned step on drive spindle on assembly
drawing before reassembling either spindle.
Air Screen - Throttle valve air screen assembly should be
cleaned by reverse flushing when necessary. Before reassembly
note on drawing that air screen cylinder is assembled within the
throttle valve cap. Also when reassembling be sure small end of
conical throttle valve spring rests against the 3/8" diameter
hardened steel ball. Be sure air screen flange comes to rest cor-
rectly within its counter-bore in steel seat insert.
MAINTENANCE & SERVICING
11
SM-97
PARTS LIST (Cont’)
50
