28
MAINTENANCE SECTION
In the following step, the measurement must be
made at the end corner of the large rotor body.
3.
The clearance between the Front End Plate and Rotor
is critical. While pressing down with your finger on
the outer edge of the Front End Plate on the bearing
side, insert a 0.004” (0.1 mm) feeler gauge between
the face of the rotor body and the face of the End
Plate at a point that is 180 degrees from where the
pressure is applied. Refer to Dwg. TPA1740. To
increase the gap, support the End Plate and lightly tap
the rotor shaft with a plastic hammer; to decrease the
gap, press the Bearing farther onto the rotor shaft.
(Dwg. TPA1740)
Measurement of Front End Plate Clearance
PRESSURE
FEELER
GAUGE
4.
Wipe each Vane (29) with a light film of
Ingersoll–Rand No.10 Oil and place a Vane in each
slot in the Rotor.
5.
One end of the Cylinder Assembly (25) has a notch
that breaks the outer wall and end face of the
Cylinder. With that end trailing, install the Cylinder
Assembly over the Rotor and Vanes against the Front
End Plate. Make certain the Cylinder Front
Alignment Pin (27) enters the hole in the Front End
Plate.
6.
Install the Rear End Plate Assembly (22), flat face
leading, on the rear hub of the Rotor. Make certain
the Cylinder Rear Alignment Pin (26) enters the hole
in the Rear End Plate.
7.
Examine the Rear End Plate Face Plate (23) for
scratches. If it is scratched, replace it. If it is not,
slide it onto the rear hub of the Rotor and onto the
Cylinder Rear Alignment Pin against the Rear End
Plate. Some pressure may be required to fit the hole
in the Plate onto the Alignment Pin.
8.
Using snap ring pliers, install the Rear End Plate
Assembly Retainer (24) in the annular groove on the
rear rotor hub to secure the assembly in position.
9.
Set the assembled motor aside.
Assembly of the Rear Gear Case
1.
Using a small screwdriver, work the Spindle Bearing
Seat (45A) into the internal groove nearest the
notched end of the Rear Gear Case (43).
2.
Stand the Rear Gear Case, notched end upward, on
the table of an arbor press. Using a piece of tubing
that contacts the outer race of the Spindle Bearing
(44), press a new Bearing into the Gear Case against
the Seat.
3.
Lubricate the gears in the Rear Spindle Assembly
(42) with Ingersoll–Rand No. 67 Grease.
4.
Invert the Rear Gear Case and using another piece of
tubing that supports the inner race of the Bearing and
clears the output end of the Spindle Assembly, press
the Rear Spindle Assembly into the Bearing from the
motor end of the Rear Gear Case.
5.
Using snap ring pliers, install the Spindle Bearing
Retaining Ring (45) in the external groove near the
driver end of the spindle.
6.
Lightly lubricate the Planet Gear Head Spacer (41)
with Ingersoll–Rand No. 67 Grease and install it in
the Rear Gear Case against the Spindle Assembly.
7.
Lubricate the shafts of the Planet Gear Head
Assembly (38) with Ingersoll–Rand No. 67 Grease
and install the Gear Head in the Rear Gear Case
meshing the spline on the shaft with the gear teeth in
the Spindle Assembly.
8.
For Series QA1L02, lubricate the Planet Gears (39)
with Ingersoll–Rand No. 67 Grease and install them
on the shafts of the Planet Gear Frame Assembly.
For Series QA1L05, lubricate the Planet Gears (39)
and Gear Head Pinion (40) with Ingersoll–Rand No.
67 Grease and install the Planet Gears on the shafts of
the Planet Gear Frame Assembly. Insert the Gear
Head Pinion in the center of the Planet Gears making
certain the teeth mesh.
9.
Install the Gear Head Spacer (37) against the Gears
and secure the assembly by using snap ring pliers to
install the Gear Retainer (36) in the internal groove at
the motor end of the Rear Gear Case.
Assembly of the Adjustable Cushion Clutch
1.
Insert the small end of the Clutch Shaft (68) into the
end of the Cam Jaw (70) having the large opening
and slide the Shaft about half way into the Jaw.
2.
Drop the twelve Clutch Balls (69) into the Cam Jaw
forming a ring around the Clutch Shaft.
