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6. Check the outside diameter and large inside diameter
of the Rotor Bearing Seal for wear. If the outside
diameter of the hub is worn to 1.176" (29.9 mm) or
smaller, and/or the large inside diameter is worn to
0.91" (23.1 mm) or larger, install a new Rotor Bearing
Seal Assembly.
Take all measurements 90 degrees to the left of the
dowel hole when facing the hub side of the Seal.
Install the Rotor Bearing Seal.
7. Press the Rear Rotor Bearing (36) onto the hub of the
Controller and press the Controller Assembly into the
Bearing Cage (37) to within 1/8" of seating.
8. Slip the Controller Assembly over the Rotor Shaft.
Rotate the Controller counterclockwise since this is a
left–hand thread.
Use only the special No. 99V60–950 Controller
Wrench for applying the assembly.
Tighten the Controller to 14 to 16 ft–lb (19.0 to
21.7 Nm) torque. DO NOT EXCEED 16 ft–lb.
The Controller may be damaged if this torque is
exceeded. Always check the free speed of a
Grinder after it has been reassembled and before it
is put back into service. Refer to Test Procedure
on Page 13. NEVER use a Grinder which runs in
excess of the maximum speed listed in the Test
Procedure. Always check the free speed of a
Grinder after it has been reassembled and before it
is put back into service.
The Controller Retaining Nut (34) has a
right–hand thread.
9. Install the Controller Retaining Nut. Tighten to 9
ft–lb (12.2 Nm) torque.
10. Grasp the Throttle Handle Assembly (1) in a vise,
wide end up with the Throttle Lever facing right.
11. Insert the assembled motor into the Throttle Handle
Assembly aligning the Cylinder Dowel with the upper
left–hand dowel pin hole.
12. Lightly dampen the Arbor Housing Gasket (32) with
oil and align it with the holes in the Throttle Handle
Assembly.
13. Insert the two Motor Clamp Washers (49) over the
spline of the Rotor Shaft, concave side up so the inner
rim contacts the Front End Plate (46).
14. Place the Arbor Housing (29) onto the Throttle
Handle Assembly.
MAINTENANCE SECTION
15. Place Lock Washers on the Arbor Housing Screws
16. Install the Exhaust Baffle (26), Exhaust Diffuser (27)
Assembly of the Arbor
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Fill the oil chamber with the recommended oil and
20
Make sure THE NOTCH on the face of the Arbor
Housing lines up with the Cylinder Dowel of the
motor. Exhaust will be to the right of the operator.
Rotating the housing and motor and aligning the
Cylinder Dowel with each of the dowel pin holes
changes the direction of exhaust 90 degrees.
(30) and slightly tighten opposite screws; then tighten
all screws to 14 ft–lb (19 Nm) torque.
in models where used and the Exhaust Deflector (25)
and Exhaust Deflector Gasket (26A) in the Arbor
Housing. Insert the Exhaust Deflector Screws (28)
and tighten with the No. R2J–562 Deflector Screw
Wrench to 23 in–lb (2.6 Nm) torque.
Press the Arbor Bearing (59) onto the Arbor Shaft
(56).
Grasp the Arbor Shaft in a vise, spline end up.
Install the Bearing Lock Washer (58) and Bearing
Locknut (57). Tighten the Locknut snugly. Bend the
tangs of the Bearing Lock Washer into the grooves of
the Bearing Locknut.
Remove the Arbor Shaft from the vise.
Grasp the Arbor Housing (29) in a vise, Guard end up.
Coat the spline of the Rotor Shaft and the spline of
the Arbor Shaft with 3 to 4 cc of Ingersoll–Rand No.
28 Grease. Insert the Arbor Coupling into the Arbor
Housing and onto the spline of the Rotor Shaft. Slip
the spline of the Arbor Shaft into the Arbor Coupling.
Place the Wheel Guard (55) onto the Arbor Housing
making sure the holes are aligned. Install the Guard
Screw Lock Washers (54) and Guard Screws (53).
Tighten to 15 ft–lb (20.3 Nm) torque.
Install a Wheel Flange (52), Wheel and the other
Wheel Flange (52) onto the Arbor (56).
Slip the flanges onto the arbor so the keys are
opposite each other.
Using an applicable Spanner Wrench inserted into the
pin hole of the flange to hold the arbor, install the
Wheel Nut (51) with an open–end wrench. Only
tighten sufficiently to drive the wheel and prevent
slippage.
insert the Oil Chamber Plug (24). Tighten to 4 ft–lb
(5.4 Nm) torque.
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