21
MAINTENANCE SECTION
14. Install the Cylinder (24) over the Vanes and Rotor
with the end of the Cylinder having the Alignment
Pin (25) in the middle of the four holes positioned
toward the Front End Plate. Make certain the Pin
enters the hole in the face of the Front End Plate.
See Dwg. TPD1276.
(Dwg. TPD1276)
CYLINDER
VANE
ROTOR
FRONT END PLATE
ALIGNMENT PIN
15. Place the Rear End Plate and Bearing against the face
of the Cylinder, Bearing end trailing.
16. Insert the assembly into the Motor Housing. It may
be necessary to tap the assembly into position with a
brass or plastic hammer.
See Dwg. TPD1279.
(Dwg. TPD1279)
17. Grasp the handle of the Motor Housing in vise jaws
with the rotor shaft upward. Thread the Front End
Plate Spacer (31) into the Housing and using the end
plate spacer spanner, tighten the Spacer to 12 ft–lb
(16 Nm) torque. This is a left–hand thread; rotate
the wrench counterclockwise to tighten.
See to Dwg. TPD1280.
COUNTERCLOCKWISE TO TIGHTEN
SPANNER
(Dwg. TPD1280)
18. After installing the Front End Plate Spacer, grasp the
shaft of the Rotor and rotate it by hand. If the Rotor
does not turn easily, disassemble the motor unit and
determine where the assembly is binding. The motor
must rotate freely before proceeding further with the
assembly.
19. Install the Cover (20).
Assembly of the Impulse Mechanism
1. Insert the long shaft with the annular groove of the
Spring Guide (44) into the central opening of the
O–ring installer furnished with the Tool Kit
(Part No. 55P–199). Place the Spring Guide Seal (45)
on the tapered end of the installer and roll the Seal up
the taper and into the groove on the large body of the
Spring Guide. See Dwg. TPD1281.
(Dwg. TPD1281)
SPRING GUIDE SEAL
O–RING INSTALLER
2. Insert the Relief Valve (43), large end trailing, into
the Liner (41). Insert the assembled Spring Guide,
long hub with annular groove leading, into the Liner
against the Relief Valve. See Dwg. TPD1282.
(Dwg. TPD1282)
RELIEF VALVE
LINER
LONG END OF SPRING GUIDE
WITH GROOVE
3. Place a Blade (46) into one of the slots of the Drive
Shaft (62 or 68A) with the blade assembly pins
inward.
4. From the opposite side of the Shaft, encircle each Pin
with a Blade Spring (47).