MAINTENANCE SECTION
a.Carefully heat alternate sides of the Housing until it is very warm.
b.Using thick, heavy gloves to avoid being burned, grasp the Housing and repeat the attempt to dislodge the Cylinder.
12.Remove the two Air Port Gaskets (14) and Gasket supports (15) from the Housing.
ASSEMBLY
General Instructions
1.Always press on the inner ring of a ball±type bearing when installing the bearing on a shaft.
2.Always press on the outer ring of a ball±type bearing when pressing the bearing into a bearing recess.
3.Whenever grasping a tool or part in a vise, always use leather±covered or copper±covered vise jaws. Take extra care with threaded members and housings.
4.Always clean every part and wipe every part with a thin film of oil before installation.
5.Apply a film of O±ring lubricant to all O±rings before final assembly.
Assembly of the Motor
1.Press the Front Rotor Bearing (12) into the
recess at the hammer case end of the Motor Housing
(1).
2.Slide the Front End Plate (11), bronze face first, over the spline hub of the Rotor (8).
3.Stand the assembled Rotor and End Plate upright, grasping the rotor spline with leather±covered or copper±covered vise jaws.
4.Place a Vane (9) in each slot in the Rotor.
5.Slide the Cylinder (10) down over the Rotor, aligning the holes in the Cylinder with those in the Front End Plate.
6.Using a sleeve that will contact only the outer ring of the Rear Rotor Bearing (7), press the Bearing into the Rear End Plate (6).
7.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.
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 1º (25 mm) into the vise jaws.
8.Lightly clamp the Motor Housing in leather±covered or copper±covered vise jaws with the motor bore upward.
9.Lubricate and install a new fiber Gasket Support
(15) into each of the air ports inside the Motor Hous- ing.
10.Install an Air Port Gasket (14) into each opening against the Retainer with the flat end of the Gasket away from the Retainer.
11.Using an assembly rod that is approximately 3/16º diameter x 8º long (5 mm diameter x 203 mm long), insert the rod through cylinder dowel holes in the End Plates and Cylinder to align the components. Allow the rod to protrude through the Front End Plate far enough to enter the dowel hole in the bottom of the motor bore.
12.Insert the rod into the motor housing dowel hole and slide the assembled motor along the rod into the Mo- tor Housing. The assembly will be at the proper depth when the Rear End Plate is slightly below the face of the Motor Housing. Remove the assembly rod and insert the Cylinder Dowel (13) into the assembly.
13.Place the Motor Clamp Washer (5), concave side first, over the hub of the Rear End Plate so that the outer rim of the Washer contacts the End Plate.
14.Install the Seal (3) on the inside of the Back Cap.
15.Install Back Cap on Housing and secure with Cap Screws (21) and Lock Washers (22). Tighten to 5±7 ft±lb (6.8±9.5 Nm) torque.
16.If Plugs (4) were removed or are being replaced, apply pipe thread sealant and tighten to 10±20 ft±lb (13.5±27 Nm) torque.
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