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Assembly of the Throttle and Inlet
1. Assemble the Valve Seat Support Parts. Tighten the
Valve Seat Screw (8) to 12 in–lb (1.4 Nm) torque.
2. Insert the Assembly in the handle, large diameter first.
Locate a punch on the flat of the screw head and tap it
with a hammer until the assembly is firmly seated.
3. Apply O–ring lubricant to the Seals (3). Fit the seals
to the Throttle Valve (2) and push the assembly, small
diameter first, into the handle until it seats firmly.
4. Assemble the Locking Lever Assembly (14) as
illustrated in Dwgs. TPD563 and TPD646.
For Lever Handle Models
For Grip Handle Models
5. Align the holes in the Lever Assembly with the slots
in the Throttle Handle. With a soft hammer, tap the
Throttle Lever Pin (15) through the Lever Assembly.
File off any sharp edges. Operate the mechanism
internally by hand to assure operation.
MAINTENANCE SECTION
(Dwg. TPD563)
(Dwg. TPD646)
19
6.
Grasp the Throttle Handle in a vise.
7.
Insert the Throttle Valve Spring (6) small end first.
8.
Clean the face of the Inlet Bushing (4) and the Inlet
Bushing Screen (5) with a suitable cleaning solution
in a well–ventilated area before assembling into the
tool. Insert the parts in the end of the Throttle Handle.
With a Wrench tighten the Inlet Bushing (4) between
35 and 45 ft–lb (47 and 61 Nm) torque.
Assembly of the Motor
1.
Using an arbor press, press against the inner race of
the bearing to install the Front Rotor Bearing (47)
onto the Rotor Shaft (48).
2.
Inspect the Front End Plate (46) for nicks or burrs.
Replace if necessary. Install the Front End Plate over
the Rotor Shaft (48) and onto the Front Rotor Bearing
(47). This is a light press fit.
3.
Hold the Rotor Shaft in a vise. Insert the Rotor Key
(45) in the slot of the Rotor (43). The Rotor is
counterbored on one end. Place that end over the
Rotor Shaft.
This should be a slip fit. If tightness is detected,
lightly polish one long side of the Rotor Key using
fine emery cloth on a hard, flat surface. Insert the
key with the polished side toward the Rotor Shaft.
Apply a light film of the recommended oil to each
Vane (44) and insert one vane, straight edge out, into
each slot in the Rotor. If any new vanes are required,
replace the entire set.
4.
Place the Cylinder (40) over the Rotor matching the
End Plate Dowel (short dowel) (41) to the alignment
hole in the Front End Plate (46).
5.
Align the Rear End Plate (39) with the Long Cylinder
Dowel (42).
If the Controller Assembly (35) needs to be replace,
you must also replace the Rotor Bearing Seal
Assembly (36) which consists of the Rear Rotor
Bearing and Rotor Bearing Seal. If either the Rear
Rotor Bearing or Rotor Bearing Seal needs to be
replaced, BOTH must be replaced with a new
Bearing and Seal. Do not mix old and new parts.
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