Maintenance Section (Continued)
Assembly of the Motor
1.Make certain Reverse Valve Bushing Seals (10) are properly located in undercuts in Reverse Valve Bushing (9).
2.Dampen Reverse Valve (11) with light oil. Install Reverse Valve Detent Spring (13) followed by Reverse Valve Detent Ball (12) in hole in Reverse Valve. With the Impact Wrench in an upright horizontal position and while facing handle end of Impact Wrench, slowly rotate the Reverse Valve and insert it from left to right in the splined end of Reverse Valve Bushing.
3.Apply a quality
(14)to Reverse Valve with Reverse Valve Knob Screw and tighten Screw to 40 to 50
4.Place Trigger (7) in Housing (1) and secure it with Trigger Pin (8).
5.Install Throttle Valve Face (3) on Throttle Valve (2).
6.Install Throttle Valve Stem (5), Throttle Valve and Throttle Valve Spring (4).
7.Install Air Strainer Assembly (6) and tighten it to 30 to 35
8.Using a sleeve that will contact only outer ring of bearing, press Front Rotor
9.Slip Front End Plate and Bearing over splined hub of Rotor (18).
10.Grasp splined hub of Rotor in
11.Dampen each Vane (25) with light oil and insert a Vane into each vane slot.
12.Set the Cylinder (22) over the Rotor and onto the Front End Plate.
13.Slide Rear End Plate and Bearing onto rotor hub and against Cylinder.
14.Install Rear Rotor Bearing Retainer (21) in groove on rotor hub.
15.Align dowel hole in both End Plates with the one through Cylinder and insert a guide
16.Grasp handle of the Motor Housing in
17.Wipe a thin film of light grease on End Plate Gasket
(28)and press Gasket firmly
18.Insert protruding end of guide rod into dowel hole in bore of Motor Housing and slide
19.Remove guide rod and replace it with Cylinder Dowel
20.Reposition Motor Housing in vise so that open face of Motor Housing is upward.
21.Place two Motor Clamp Washers (29), convex side first, against Front End Plate so
22.Place Rear Hammer Frame Washer (32) over hub of Rotor and against Front Rotor.
For proper performance, the Cylinder (22) must be installed according to the following instructions:
23.One end of the Cylinder has a small dimple on the air inlet. The end with the dimple on it must be installed on the Front End Plate. See Dwg. TPA1778.
CYLINDER
DIMPLE (THIS SIDE MUST BE INSTALLED ON THE FRONT END PLATE)
(Dwg. TPA1778)
Set the Cylinder over the Rotor and onto the Front End Plate.
24.Slide Rear End Plate and Bearing onto rotor hub and against Cylinder.
25.Install Rear Rotor Bearing Retainer (21) in groove on rotor hub.
26.Align dowel hole in both End Plates with the one through Cylinder, and insert a guide rod 5/32” diameter x 6” long (3.9 mm diameter x 152 mm long). Allow rod to protrude from Rear End Plate.
27.Grasp handle of the Motor Housing in
28.Wipe a thin film of light grease on End Plate Gasket
(28)and press Gasket firmly against Rear End Plate.
29.Insert protruding end of guide rod into dowel hole in bore of Motor Housing and slide motor along rod until it is completely seated.
30.Remove guide rod and replace it with Cylinder Dowel
31.Reposition Motor Housing in vise so that open face of Motor Housing is upward.
32.Place two Motor Clamp Washers (29), convex side first, against Front End Plate so that inner rim of leading Washer contacts End Plate, and outer rim of trailing Washer contacts Hammer Case Pilot (35B).
33.Place Rear Hammer Frame Washer (32) over hub of Rotor and against Front Rotor Bearing.
Assembly of the Impact Mechanism
TOP HAMMER
WIDE BEVEL UP
TOP HAMMER
BOTTOM HAMMER
WIDE BEVEL DOWN
BOTTOM HAMMER | (Dwg. TPD652) |
15
