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8. Follow the Plunger with the Throttle Valve (7) spring
seat end facing up.
9. Place the Throttle Valve Spring (6), small end first on
the Throttle Valve.
10. Place the Air Strainer Screen (5), concave end up on
the Spring.
11. Insert Exhaust Deflector Seal (12), Exhaust Silencer
(11), and Exhaust Screen (10) in the exhaust port in the
Handle.
12. Install the Exhaust Deflector and retain with the
Washer (3) and Inlet Bushing (2).
13. Torque Inlet Bushing to 20–25 ft–lb (27–34 Nm).
For Model 2940P
1.
Apply O–ring lubricant to the O–rings and place them
on the Throttle Valve Bushing (22), large ring on the
large diameter grooves, the two smaller rings in the
smaller grooves.
2.
Insert the Throttle Valve Assembly (21), small end
first, into the small diameter of the Throttle Valve
Bushing.
3.
Align the slot in the Throttle Valve Assembly with the
slot in the Throttle Valve Bushing and replace the
Trigger Retaining Pin (28). Press on the Trigger
(27A).
4.
Place the Impactool on the workbench with the handle
pointing toward you and the square drive upward.
Align the hole in the Throttle Valve Bushing Assembly
with the hole in the Housing and drive in the Throttle
Valve Assembly Retaining Pin (20) from left to right.
5.
Place and secure the Exhaust Diffuser (35), Exhaust
Silencer (36), and Silencer Cover (37) with the
Silencer Cover Screws (38).
Assembly of the Motor
Periodically, as experience indicates and always after
disassembly, clean the air strainer screen in the Inlet
Bushing (2). Torque the Bushing to 20 to 25 ft–lb
(27 to 34 Nm).
Before assembling the Motor, wipe a thin film of oil on the
Rotor (56), End Plates (55 and 58), Cylinder (52), and
Vanes (57).
1.
Slide the Front End Plate (58), bronze face first, over
the splined hub of the Rotor (56).
2.
Stand the assembled Rotor and End Plate upright,
grasping the splined rotor hub with leather–covered or
copper–covered vise jaws.
3.
Place a Vane (57) in each vane slot in the Rotor.
4.
Slide the Cylinder (52) down over the Rotor, aligning
the holes in the Cylinder with those in the Front End
Plate.
MAINTENANCE SECTION
5.
6.
7.
8.
9.
10. Place the Motor Clamp Washer (51) concave side first,
11. Install the Motor Housing Cover. Tighten the Motor
Assembly of the Reverse Valve
1.
2.
3.
4.
5.
6.
20
Using a sleeve that will contact only the outer ring of
the Rear Rotor Bearing (54), press the bearing into the
Rear End Plate (55).
Using a sleeve that will contact only the inner ring of
the Rear Rotor Bearing, press the assembled bearing
and end plate onto the short hub of the Rotor.
Before installing the Motor Assembly in the Motor
Housing (1), be certain that the Air Port Gaskets (14)
and Gasket Retainers (15) are in good condition and
positioned with large open end down in the recess in
the Motor Housing.
Using a 3/16" x 8" rod, insert the rod through the
Cylinder Dowel Holes in both End Plates and Cylinder.
This will hold all the motor parts in alignment. Allow
the 3/16" rod to protrude from the Front End Plate far
enough to enter the dowel hole at the bottom of the
bore of the Motor Housing.
Put the rod into the Dowel Hole in the Motor Housing,
then slide the assembled Motor into the Housing.
Remove the rod and install the Cylinder Dowel (53).
over the hub of the Rear End Plate so that the outer rim
of the Washer contacts the End Plate.
Housing Cover Cap Screws to 14 to 17 ft–lb
(19 to 27 Nm).
Dampen the Reverse Valve Seal (30) and Power
Regulator Seal (40) with O–ring lubricant and install
the Seals in their respective grooves on the Reverse
Valve Assembly (29) and Power Regulator Assembly
(39).
Slide the Reverse Valve Assembly into the Reverse
Valve Bushing (13), large end first, so that the groove
on the trailing end of the Valve is upward.
Slide the Power Regulator Assembly into the Reverse
Valve Assembly, flat end first, and position it so that
the groove on the trailing end of the Regulator is
aligned with the small hole in the Reverse Valve
Assembly.
Place the Power Regulator Retaining Ball (41) in the
small hole in the Reverse Valve Assembly, making
certain that it engages the groove in the Power
Regulator Assembly.
Aligning the flats on the Reverse Lever (32) with those
on the Reverse Valve Assembly, slide the Reverse
Lever on the Reverse Valve Assembly so that the tang
on the lever is pointing downward parallel with the
handle. Place the Housing Cover Gasket (50) on the
Motor Housing.
Put the Reverse Lock Spring (34) followed by the
Reverse Lock Plunger (33) in the small hole at the
bottom of the Housing Cover Assembly (44).
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