MAINTENANCE SECTION
4.Always clean every part and wipe every part with a thin film of oil before installation.
5.Apply a film of
10.Clean the threads of the Controller Assembly (22) and apply two or three drops of a thread locking compound to the threads. Thread the Controller onto the Rotor.
Assembly of the Motor and Throttle
1.Assemble the Throttle Valve Seat Support Assembly
(8).Secure the Valve Seat (12), the Valve Seat Washer (11), and the Valve Seat Lock Washer (10) with the Valve Seat Screw (9). Tighten the Valve Seat Screw between 0.75 to 2.25
(13)before installing them on the Throttle Valve Seat Support.
2.Insert the Assembly into the large diameter of the handle, Valve Seat Screw end first.
3.Using No.
4.Press the Front Rotor Bearing (29), with Front End Plate (28), onto the rotor shaft.
5.Grasp the splined end of the Rotor (26) in
6.Place the Cylinder (25) over the Rotor, aligning the dowel hole in the Cylinder with the dowel hole in the Front End Plate.
7.Apply a film of the recommended oil to each Vane
(27)and insert a Vane, straight edge out, into each vane slot in the Rotor. If new Vanes are required, replace the entire set.
8.Check the large inside diameter of the Rear End Plate Assembly (23) for wear. If the large inside diameter of the Rear End Plate is worn to 1.516” (38.506 mm) or larger, install a new Rear End Plate Assembly.
If the Controller Assembly must be replaced, it is furnished with a new Rear End Plate Assembly. Use only the End Plate Assembly furnished with the Controller Assembly. If the Controller is good but the Rear End Plate Assembly needs replacement, only install a new Rear End Plate Assembly. Do not use or interchange old parts with new Rear End Plate Assembly components. The End Plate, Spacer and Bearing are a matched set. Do not mix components with those of another set. The Rear Rotor Bearing is always damaged during removal and a new Rear End Plate Assembly must be installed.
9.Press the Rear End Plate Assembly onto the shaft of the controller body making certain the marked end of the Bearing faces toward the Controller or rear of the Grinder. Also make certain that the beveled end of the Spacer faces the Cylinder or front of the Grinder.
Before tightening the Controller, be certain that the dowel holes in the Cylinder and End Plate are aligned. Use the
Always check the free speed of the Grinder after it has been reassembled and before it is put back into service. Never use a Grinder with a free speed that exceeds the maximum speed listed on the Nameplate.
11.Remove the Rotor from the vise.
12.Insert the Cylinder Dowel (30) so it is flush with the face of the Front End Plate and protrudes from the back of the Rear End Plate Assembly.
13.Install a new End Plate Gasket (24) into the Throttle Handle (1).
14.Install the assembled motor into the Throttle Handle (1), making sure the Cylinder Dowel (30) aligns with the pin hole inside the Throttle Handle.
Assembly of the Bevel Pinion Driver
1.For GRP15A Models:
a.Install the Planet Gear Bearings (37) into the Planet Gears (36).
b.Install an assembled Planet Gear into one of the slots in the gear head. Make sure the shaft hole aligns in both the Planet Gear and the gear head.
c.Press the Planet Gear Shaft (34) into the hole opposite the tapered shaft hole in the gear head until it is flush with the face of the gear head.
d.Install the Rotor Pinion (35), making sure the teeth of the Planet Gear and Rotor Pinion mesh. Install the other assembled Planet Gear into the remaining slot of the gearhead. Make sure the teeth of the Planet Gear and the Rotor Pinion mesh and the shaft hole aligns in both the Planet Gear and gear head.
e.Press the other Planet Gear Shaft (34) into the hole opposite the tapered shaft hole in the gear head until it is flush with the face of the gear head. Lubricate the Gearing liberally with IRAX
No.
24
