19
MAINTENANCE SECTION
Disassembly of the Motor
1.
Grasp the Motor Housing (1) in vise jaws with the
shaft of the Rotor (26) upward.
2.
Insert the pins of the end plate spacer spanner into the
holes in the Front End Plate Spacer (31). Using a
wrench, unscrew and remove the Spacer. This is a
left–hand thread; rotate the wrench clockwise to
remove the Spacer. See Dwg. TPD1269.
END PLATE
SPACER SPANNER
CLOCKWISE
TO LOOSEN
(Dwg. TPD1269)
3.
Reposition the Motor Housing in the vise jaws so that
the vise jaws grip the end of the rotor shaft and the
handle grip of the Housing is downward. Tap the
edges of the Housing surrounding the motor bore
with a plastic hammer to separate the Housing from
the motor. See Dwg. TPD1270.
(Dwg. TPD1270)
4.
Remove the motor from the vise jaws and remove the
Front End Plate (28), Front End Plate Bearing (29),
Cylinder Assembly (24) and Vanes (27) from the
Rotor.
5.
On the table of an arbor press, support the Rear End
Plate (22) with blocks as close to the Rotor as
possible and press the Rotor out of the Rear End Plate
and Rear Rotor Bearing (23).
6.
To remove the Rear Rotor Bearing from the Rear End
Plate, use a small drift or pin punch through the
central opening of the Rear End Plate to tap the
Bearing out of the End Plate.
See Dwg. TPD1271.
Do not enlarge or damage the shaft hole in the
End Plate.
(Dwg. TPD1271)
7. Using a pin punch, tap the Throttle Retaining Pin (15)
and the Deflector Retaining Pin (19) out of the
Handle. The Throttle Retaining Pin is protected by an
embossed circular pad of metal. Insert the pin punch
into the middle of the pad to locate the Pin.
See Dwg. TPD1272.
(Dwg. TPD1272)
8. Grasp the Trigger (13) and pull the assembled throttle
out of the Motor Housing.
9. Using a pin punch and without damaging the Trigger,
remove the Trigger Pin (14).
10. Grasp the Reverse Lever (11) and pull the Reverse
Valve (8) from the front of the Throttle Bushing
Assembly. The Reverse Lever Detent Ball (10) and
Reverse Lever Detent Spring (9) will fall out of the
Reverse Valve. Take care not to lose them.
11. Remove the Throttle Rod Assembly (5) from the rear
of the Throttle Bushing.
12. Remove the Throttle Rod Seal (6) from the Throttle
Rod.
13. If it is necessary to replace the Reverse Lever or
Reverse Valve, use a pin punch to tap out the Reverse
Lever Pin (12) out of the Reverse Lever. Separate the
Reverse Lever from the Reverse Valve.
14. Grasp the Exhaust Deflector Assembly (18) and pull
it out of the Housing.
15. Unscrew and remove the Inlet Bushing (16).