Assembly Of The Motor - Ingersoll-Rand 2161P Series Instructions Manual

Assembly of the Throttle Mechansism
1. Install a new Throttle Valve Seat (2) by pushing it into
position in the Housing (1) with a 13/16" dowel.
2. Insert the short end of the stem of the Throttle Valve
(4) into the jaws of an expanding–type mechanical
pencil. Allow the jaws to retract around the stem to
secure it.
3. Install the Throttle Valve on the Valve Seat.
See Dwg. TPD1919.
4. As an alternate assembly procedure, drop the Throttle
Valve, long stem first, into the inlet passage. If the
throttle Valve does not sit squarely on the Throttle
valve Seat, shake the Handle until it seats.
5. Install the Throttle Valve Spring (5), small end first,
with the inside diameter of the small first coil around
the hub of the Throttle Valve.
6. Coat the Inlet Bushing O–ring (8) with O–ring
lubricant and install it on the Inlet Bushing (7).
7. Screw the Inlet bushing into the Housing until snug
and tighten to 55–60 ft. lbs. (75–81 Nm) torque.
8. Wipe the stem of the Trigger Assembly (3) with light
grease and insert the stem of the Trigger into the
trigger bore in the Housing until it snaps into place on
the Throttle Valve.
MAINTENANCE SECTION
(Dwg. TPD1919)
13

Assembly of the Motor

1. Pack the Front Rotor Bearing (27) and Rear Rotor
Bearing (20) with the recommended grease. Install the
Front Rotor Bearing in the Front End Plate (26) and the
Rear Rotor Bearing in the Rear End Plate (21).
2. Slide the assembled Rear End Plate and Rear Rotor
Bearing on the hub of the Rotor (22).
3. Set the assembled Rear End Plate and Rotor on a clean
surface with the spline of the Rotor pointing upward.
4. Insert the Vanes (23) in the vane slots on the Rotor.
5. Install the Front and Rear Cylinder Dowels (24) in the
Cylinder (25).
6. Slide the Cylinder over the the Rotor and Vanes
making sure that the Rear Cylinder Dowel enters the
notch in the in the outside diameter of the Rear End
Plate.
7. Install the assembled Front End Plate and Bearing over
the front, splined end of the Rotor making sure that the
front Cylinder Dowel fits into the notch in the outside
diameter of the Front End Plate.
8. Grasp the Housing with one hand and set it upside down
on its top. With the other hand, carefully guide the motor
assembly into the Housing, making sure that the side of
the motor assembly containing the Cylinder Dowels is
oriented to the top of the Housing. Install Locating Pin
(21A) into Housing and Rear End Plate.
See Dwg. TPD1923–1.
(Dwg. TPD1923–1)