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2.
Insert the short end of the stem of the Throttle Valve
(5) into the jaws of an expanding–type mechanical pen-
cil. Allow the jaws to retract around 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 (6), 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 (9) with O–ring lubri-
cant and install it on the Inlet Bushing (8).
7.
Screw the Inlet bushing into the Housing until snug and
tighten to 50–55 ft. lbs. (68–75 Nm) torque.
8.
Wipe the stem of the Trigger Assembly (3) with light
grease and insert the stem of the Trigger into the trig-
ger bore in the Housing until it snaps into place on the
Throttle Valve.
Assembly of the Motor
1.
Pack the Front Rotor Bearing (30) and Rear Rotor
Bearing (22) with the recommended grease. Install the
Front Rotor Bearing in the Front End Plate (29) and
the Rear Rotor Bearing in the Rear End Plate (23).
2.
Slide the assembled Rear End Plate and Rear Rotor
Bearing on the hub of the Rotor (25).
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 (26) in the vane slots on the Rotor.
5.
Install the Front and Rear Cylinder Dowels (28) in the
Cylinder (27).
6.
Slide the Cylinder over the the Rotor and Vanes mak-
ing sure that the Rear Cylinder Dowel enters the notch
in the in the outside diameter of the Rear End Plate.
For Series 2925RBP1Ti and 2925RBP3Ti
Assemble Cylinder with exhaust ports to LEFT of top
dead center (11 o'clock position). See Dwg. TPD1921.
Form P7715 Edition 1
MAINTENANCE (Continued)
(Dwg. TPD1919)
If more power is needed for forward operation than for
reverse operation, install the Cylinder with exhaust ports to
the RIGHT of top dead center (1 o'clock position).
Assembly of the Reverse Valve
30
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 (24) into Housing and End Plate. See
Dwg. TPD1920–1
1.
Coat a new Reverse Valve O–ring (31) with O–ring
lubricant and install it in the groove on the Reverse
Valve (32).
(Dwg. TPD1921)
(Dwg. TPD1920–1)
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