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Assembly of the Motor
1. Lightly clamp Motor Housing (26) in leather-covered or coppercovered vise jaws with handle end upward.
●
Excessive clamping pressure will distort the Motor Housing and make motor installation extremely difficult. Do not insert the
hammer case end of the Motor Housing more than 1" (25 mm) into the vise jaws.
2. Grease Front Rotor Bearing (25) and install it in recess of Front End Plate.
3. Coat inside surface of Housing and outer edge of Front End Plate (24) with a light film of oil.
4. Using a long tee hex wrench as an alignment pin, insert Front End Plate into Motor Housing. Align dowel hole in End Plate with dowel hole
at the bottom of motor bore.
5. Lubricate and insert a new fiber Air Port Gasket Retainer (28) in one of the air ports inside Motor Housing.
6. Install an Air Port Gasket (29) in the air port against Gasket Retainer with flat end of Gasket away from Retainer.
7. Repeat Steps 5 and 6 to install remaining Gasket and Retainer in the other air port.
8. Coat outside of Cylinder (21) with a light film of oil and using long tee hex wrench as an alignment pin to align the holes in Cylinder with
holes in Front End Plate and Housing, insert Cylinder into Housing.
9. Coat inside of Cylinder and Rotor (22) with a light film of oil and insert the splined hub of Rotor through Cylinder into Front End Plate.
10. Coat each Vane (23) with a light film of oil and insert a Vane into each slot in the Rotor. Vanes must be installed with curved edge toward
center of Rotor. Spin the Rotor to settle Vanes in position.
11. Using long tee hex wrench to align hole in Rear End Plate (20) with hole in Cylinder, insert the Rear End Plate into Motor Housing against the
Cylinder. End Plate is properly seated when large trailing face of End Plate is slightly below face of Motor Housing.
12. Grease Rear Rotor Bearing (18) and install it in recess of Rear End Plate.
13. Remove alignment pin from assembled motor and install Cylinder Dowel (19). The Dowel is properly seated when end of Dowel does not
protrude above End Plate.
14. Install Motor Clamp Washer(s) (16) against Rear End Plate so that large outer edge of Washer contacts End Plate.
Assembly of the Reverse Valve
1. Inject a small amount of grease into hole in Motor Housing (26) where Reverse Lock Plunger (30) will be installed. With grease to hold them
in position, install Reverse Lock Plunger Spring (31) and Lock Plunger.
2. Install a new Reverse Valve Bushing Seal (14) in annular groove on Reverse Valve (13).
3. Coat Reverse Valve with a light film of oil and install it in Motor Housing with the side hole nearest to Seal pointed toward Rotor (22).
4. Position Reverse Lever (12) on Reverse Valve and while using a thin blade screwdriver to depress Reverse Lock Plunger, push Lever onto
Reverse Valve.
5. Place a new Handle Gasket (17) on the Motor Housing.
6. Examine Reverse Valve Seal (11) located inside Handle and if it is nicked, deformed or worn, remove it and install a new Seal.
7. Fill rotor cavity in Handle with recommended grease and position Handle on the Motor Housing.
8. For 2955 Series: Install four Handle Cap Screws (15) and using an alternate tightening pattern, tighten Screws to between 25 and 28 ft-lb
(34 and 38 Nm) torque.
9. Move Reverse Lever through the forward and reverse positions to make certain the Lever locks in position.
10. Turn assembly in vise jaws and clamp on Handle with rotor shaft upward.
11. Pack Front Rotor Bearing with additional grease and rotate rotor shaft. If shaft does not rotate smoothly, rap end of rotor shaft with a soft
hammer to set motor and try to rotate shaft again.
Assembly of the Impact Mechanism
4
BOTTOM HAMMER
HALF- - ROUND NOTCH ON LEFT
(Dwg. TPD652)
NOTICE
TOP HAMMER
WIDE BEVEL UP
TOP HAMMER
HALF- - ROUND NOTCH ON RIGHT
BOTTOM HAMMER
WIDE BEVEL DOWN
TL-2955-MIM_ed1
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