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6. Apply a film of o–ring lubricant to every O–ring
before installation.
7.
Unless otherwise noted, always press on the stamped
end of a needle bearing when installing a needle
bearing in a recess. Use a bearing inserting tool
similar to that shown in Dwg. TPD786.
Needle Bearing Inserting Tool
SHOULDER TO
REGULATE DEPTH
Assembly of the Motor
1. Using an arbor press against the inner race of the
bearing, install the Front Rotor Bearing (44) onto the
Rotor Shaft (42).
2. Inspect the Front End Plate (43) for nicks or burrs. If
replacement is necessary, wipe the part with
Ingersoll–Rand No. 50 Oil. Press the arbor bearing
into the Front End Plate.
3. Hold the Rotor Shaft in a vise, small diameter up.
Insert the Rotor Key (41) in the slot of the Rotor (37).
The Rotor has a staked keyway on one end. Place that
end down over the Arbor. Apply a light film of
Ingersoll–Rand No. 50 Oil to each Vane (40) and
insert one vane, straight edge out, into each slot in the
Rotor. If any new vanes are required, replace the
entire set.
4. Place the Cylinder (38) over the Rotor matching the
cylinder dowel hole to the alignment hole in the Front
End Plate, with the kidney port to the left of the
dowel hole.
5. Apply the Rear End Plate (35) with the kidney port to
the left of the dowel hole.
6. Check the outside diameter and large inside diameter
of the Rotor Bearing Seal (34) for wear. If the outside
MAINTENANCE SECTION
PILOT TO FIT I.D. OF
BEARING.
LENGTH OF PILOT TO BE
APPROXIMATELY 1/8"
LESS THAN LENGTH OF
BEARING
(Dwg. TPD786)
diameter 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. Take all
measurements 30 degrees to the right of the dowel
hole when facing the hub side of the Seal. Install the
Rotor Bearing Seal hub down.
7.
Press the Rear Rotor Bearing onto the hub of the
Controller (32).
8.
Slip the Controller Assembly over the arbor. Rotate
the Controller counterclockwise since this is a
left–hand thread.
Use only the special 88V60–950 Controller Wrench
for applying the assembly. Tighten the Controller
between 14 and 16 ft–lb (19.0 and 21.7 Nm) torque.
Do not exceed 16 ft–lb (21.7 Nm). The Controller
may be damaged if this torque is exceeded. Always
check the free speed of a Saw after it has been
reassembled and before it is put back into service.
Refer to the TEST AND INSPECTION
PROCEDURE on Page 11. Never use a Saw which
runs in excess of the maximum speed listed in the
TEST AND INSPECTION PROCEDURE.
9. Install the Controller Retaining Nut (31) and tighten it
between 5 and 7 ft–lb (6.8 and 9.5 Nm) torque.
10. Place the Motor Housing (1) in a vise, open end up.
Lightly dampen the Rear End Plate Gasket (36) with
oil and line it up with the hole in the Motor Housing
so that the notch in the Gasket matches the Motor
Housing.
11. With an assembly dowel, line up the motor in the
Motor Housing. Remove the assembly dowel and
insert the Cylinder Dowel (39).
12. Install the two Motor Clamp Washers (45) concave
(dished) side up.
13. Apply the Motor Retaining Plate (46) and the six
Screws (47). Slightly tighten opposite Screws, make
sure the arbor is free, then tighten all Screws to
14 ft–lb (19 Nm) torque.
14. Again make certain the Rotor Shaft is free.
15. Fill the oil chamber with the recommended oil and
insert the Oiler Plug (4). Tighten the Plug to 4 ft–lb
(5.4 Nm) torque.
Assembly of Gearing and Installation of Guards
1.
Using a bearing inserting tool as shown in Drawing
TPD786, insert the Blade Arbor Rear Bearing (49)
into the bore of the Gear Case (48).
2.
Insert the Blade Arbor (51), large diameter first, into
the large bore end of the Gear Case and retain it using
the Arbor Bearing Retainer (53).
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