Ingersoll-Rand HA120RG4, Operation And Maintenance Manual

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27
MAINTENANCE SECTION
7. For HXA models, using snap ring pliers, install the
Coupling Retaining Ring (40) on the Spindle Bearing
Nut.
8. Inject approximately 1/2 cc of Ingersoll–Rand No. 68
Grease into the small recess at the bottom of the
motor housing bore. Drop the two Rear Rotor
Bearing Spacers (13) into the bottom of the motor
housing bore.
9. Wipe each Vane (16) with a light film of oil and insert
a Vane into each vane slot in the Rotor.
10. Grasp the Bevel Pinion or Spindle Bearing Nut and
insert the assembled Rotor into the Motor
Housing (8).
11. Assemble the Flow Ring (21) with the Flange (22)
before installing the Flange on the Housing. Mate the
Flow Ring to the end of the Flange without
perforations. The positioning of the Flow Ring is
dictated by the desired exhaust. To set the tool
exhaust, proceed as follows:
a. For front exhaust tools, align the notched
projection on the edge of the Flow Ring with the
letter “F” on the Housing.
b. For rear exhaust tools, align the notched
projection on the edge of the Flow Ring with the
letter “R” on the Housing.
12. Carefully install the assembled Flange, Flow Ring
leading, onto the front of the Motor Housing. Make
certain the Ring properly engages the Housing.
Assembly of the Extension Housing on HXA
Models
1. If the Rear Spindle Bearing (42) was replaced, stand
the Spindle (44) on the table of an arbor press and
being careful not to damage the threads on the
Spindle, press the Bearing onto the Spindle until it
seats against the shoulder of the shaft.
2. If the Front Spindle Bearing (45) was replaced, invert
the Spindle on the table of an arbor press and being
careful not to damage the threads on the Spindle,
press the Bearing, stained or marked end trailing, onto
the Spindle until it seats against the shoulder of the
shaft.
3. Grasp a 5/32” diameter steel pin vertically in a set of
vise jaws and slide the crosshole of the Spindle down
onto the pin.
4. Using a 9/16” wrench on the flats of the Bevel Pinion
(46), thread the Pinion onto the Spindle against the
Bearing and tighten it between 14 and 19 ft–lb
(19.0 and 25.8 Nm) torque.
5. Using a 1/2” wrench on one of the Spindle Bearing
Nuts (39), thread the Nut with the Coupling Retaining
Ring (40), counterbored end leading, onto the
Spindle. Tighten the Nut between 14 and 19 ft–lb
(19.0 and 25.8 Nm) torque.
6. Install the two Rear Spindle Bearing Washers (43) in
the Extension Housing in the rear spindle bearing
cavity.
7. Insert the assembled Spindle, Nut end leading, into
the small end of the Extension Housing. Push the
assembly into the Housing until the Rear Spindle
Bearing bottoms against the Rear Spindle Bearing
Washers.
8. Grasp the assembled motor in copper–covered or
Leather–covered vise jaws with the Spindle Bearing
Nut upward. Coat the inside of the Arbor
Coupling (37) with approximately 1 cc of
Ingersoll–Rand No. 68 Grease and install the
Coupling over the Bearing Nut. Position the
Clamp Sleeve (38) over the Coupling in the Motor
Housing and the Flange Clamp (23) over the Sleeve
against the Flange (22).
9. Insert the Spindle Bearing Nut in the assembled
Extension Housing into the Arbor Coupling and
thread the Extension Housing onto the Motor
Housing. This is a left–hand thread; rotate the
Extension Housing counterclockwise to tighten it.
Tighten the Housing between 20 and 25 ft–lb
(27.1 and 33.9 Nm) torque.
Assembly of the Angle Head
1. If the Upper Arbor Bearing (31 or 51) was removed
and a new Bearing must be installed, proceed as
follows:
a. Support the machined face of the Angle Head
(27 or 47) on the table of an arbor press with the
upper arbor bearing bore upward.
When installing the Bearing in the next step,
always press on the stamped or closed end of
the Bearing.
Do not press theUpper Arbor Bearing flush
with the top of the Angle Housing. Press the
Bearing to the dimensions given in the following
step.
b. Press a new Upper Arbor Bearing into the bore.
PRESS IN UPPER ARBOR BEARING
TO DIMENSION SHOWN
(Dwg. TPD1812)