4
16573347_ed2
For Grip Handle Models
(Dwg. TPD646)
Locking Lever Assembly for 88H Grinders
5. Align the holes in the Lever Assembly (14) with the slots in the
Throttle Handle. With a soft hammer, tap the Throttle Lever
Pin (15) through the Lever Assembly. File off any sharp edges.
Operate the mechanism internally by hand to assure operation.
6. Grasp the Throttle Handle in a vise.
7. Insert the Throttle Valve Spring (6) small end first.
8. Clean the face of the Inlet Bushing (4) and the Inlet Bushing
Screen (5) with kerosene, blow dry with air before assembling
into the tool. Insert the parts in the end of the Throttle Handle.
With a Wrench tighten the Inlet Bushing (4) to 35 to 45 ft-lb
(47-61 Nm) torque.
Assembly of the Motor
Using an arbor press, press against the inner race of the bearing
to install the Front Rotor Bearing (45) onto the Rotor Shaft (47).
Inspect the Front End Plate (44) for nicks or burrs. Replace if
necessary. Install the Front End Plate over the Rotor Shaft (47) and
onto the Front Rotor Bearing (45). This is a light press fit.
Hold the Rotor Shaft in a vise. Insert the Rotor Key (43) in the
slot of the Rotor (41). The Rotor has a staked keyway on one
end. Place that end up, over the rotor shaft. Apply a light film
of the recommended oil to each Vane (42) and insert one vane,
straight edge out, into each slot in the Rotor. If any new vanes are
required, replace the entire set.
Place the Cylinder (40) over the Rotor matching the Cylinder
Dowel hole to the alignment hole in the Front End Plate (44), with
the kidney port to the
right
of the dowel hole.
Apply the Rear End Plate (39) with the kidney port to the
right
of
the dowel hole.
NOTICE
If the Controller Assembly (35) needs to be replaced, you must
also replace the Rotor Bearing Seal Assembly (36) which consists
of the Rear Rotor Bearing and Rotor Bearing Seal. If either the
Rear Rotor Bearing or Rotor Bearing Seal needs to be replaced,
BOTH must be replaced with a new Bearing and Seal. Do not mix
old and new parts.
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 1.1764” or smaller, and/or the large inside diameter
is worn to 0.9103” or larger, install a new Rotor Bearing Seal
Assembly (36).
NOTICE
Take all measurements 30 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 onto the hub of the Controller.
1.
2.
3.
4.
5.
8. Slip the Controller Assembly over the Rotor Shaft. Rotate the
Controller counterclockwise since this is a left-hand thread.
CAUTION
Use only the special No. 88V60-950 Controller Wrench for
applying the assembly.
WARNING
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 the
Test and Inspection Procedure.
Never use a Grinder which runs in excess of the maximum speed
listed in the Test and Inspection Procedure.
9. Install the Controller Retaining Ring (34),
concave
face closest to
the Controller.
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 (1)
aligning the Cylinder Dowel (46) 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 (1).
13. Insert the two Motor Clamp Washers (48) over the spline of the
Rotor Shaft, concave side up so the inner rim contacts the Front
End Plate (44).
14. Place the Arbor Housing (29) onto the Throttle Handle
Assembly (1).
NOTICE
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.
NOTICE
Rotating the housing and motor and aligning the Cylinder
Dowel with each of the dowel pin holes changes the direction of
exhaust 90 degrees.
15. Place Lock Washers on the Arbor Housing Screws (30) and slightly
tighten opposite screws; then tighten all screws to 14 ft-lb
(19 Nm) torque.
16. Install the Exhaust Baffle (26), Exhaust Diffuser (27) 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.
Assembly of the Arbor
For Model 88HL90L10,
insert the Dust Washer (55) followed by
the Bearing Cap Spring (57), concave side first, into the Bearing
Cap (56). Slide the Bearing Cap followed by the Arbor Bearing
onto the Arbor shaft from the rear.
Press the Arbor Bearing (62) onto the Arbor Shaft (58).
Grasp the Arbor Shaft in a vise, spline end up.
Install the Bearing Lock Washer (61) and Bearing Locknut (60).
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 (47) and the spline of the Arbor
Shaft (58) or (59) with 3 to 4 cc of
Ingersoll Rand
No. 28 Grease.
Insert the Arbor Coupling (49) into the Arbor Housing and onto
the spline of the Rotor Shaft. Slip the spline of the Arbor Shaft into
the Arbor Coupling.
1.
2.
3.
4.
5.
6.
7.
Summary of Contents for 88H Series
Page 7: ...Notes...
