IR Ingersoll Rand 6LH1A1, Руководство по эксплуатации и обслуживанию

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19
MAINTENANCE SECTION
b. For 7L2A4 Angle Head, grasp the threaded end
of the Spindle in leather–covered or
copper–covered vise jaws.
c. Unscrew the Bevel Gear Retainer (120) and lift off
the Bevel Gear (107).
d. Press the Spindle from the Lower Spindle Bearing.
e. For 7L3A4 Angle Head, remove the Bevel Gear
Retainer 120).
f. Press off the Bevel Gear. Press the Spindle from
the Lower Spindle Bearing.
Do not remove the Spindle Upper Bearing (105)
unless you have a new bearing ready to install.
This type of bearing is always damaged during the
removal process.
7L3A4 Angle Head will require a new Angle
Housing Cap (103) when the Spindle Upper
Bearing is installed.
7. For 7L1AI Angle Head, if the Spindle Upper
Bearing appears rough or loose, press it off the
Spindle.
For 7L2A4 or 7L3A4 Angle Head, if the Spindle
Upper Bearing (104) appears rough or loose, press it
from the Angle Head.
8. Remove the Bearing Seat Retainer (110) and slide off
the Rear Thrust Bearing Seat (111), Bevel Pinion
Thrust (112) and Front Thrust Bearing Seat (113)
from the pinion shaft.
9. For 7L2A4 Angle Head, use snap ring pliers to
remove the Pinion Bearing Spacer Retainer (114).
Remove the Pinion Bearing Spacer (116).
For 7L3A4 Angle Head, use a thin blade screwdriver
to pry out and under the tab of the Pinion Bearing
Spacer Retainer (114). Rotate the screwdriver around
the pinion shaft to spiral the retainer out of its groove.
Using a hooked tool, reach into the Bevel Pinion
Bearing Spacer (116) and hook the drilled cross–hole
in the Spacer. Pull the Spacer from Angle Head.
Do not remove the pinion shaft and bearing unless
you a have new bearing on hand.
10. Grasp the spline of the pinion shaft in leather–covered
or copper–covered vise jaws and gently tap the rear
face of the Angle Head with a soft hammer to pull the
Bevel Pinion Bearing (109). After the Angle Head is
disassembled, check all parts for damage or wear.
For 7L1A1 Angle Head, if the gear teeth on either
the spindle or bevel pinion of the Spindle Assembly
(108) are worn or chipped, replace both parts. They
are furnished in a matched set and must be replaced
with a matched set.
For 7L2A4 or 7L3A4 Angle Head, if the gear teeth
on either of the Bevel Gears (107) are worn or
chipped, replace both parts. They are furnished in a
matched set and must be replaced with a matched set.
Disassembly of the Gearing
1. Being careful not to distort the Motor Housing (1),
grasp the flats on the Housing in leather–covered or
copper–covered vise jaws with the Gear Case (44)
facing upward.
2. Using a wrench on the flats of the Gear Case, loosen,
but do not remove the Gear Case.
Be certain to hold the tool over a workbench so
that you will not lose any parts.
3. Remove the tool from the vise and, while holding the
tool horizontally, carefully unscrew the Gear Case by
hand and pull it away from the Motor Housing.
4. Using snap ring pliers, remove the Gear Retainer (36).
5. For H, J, M or P ratio, the Rotor Pinion (37) may
come out with the Gear Case, or it may have
remained with the Rotor (23) when the Gear Case was
removed. Remove the Rotor Pinion.
6. For M, P or R ratio, remove the Gear Head Planet
Gear Assemblies (39) or Gear Head Planet Gears (41),
Gear Head Planet Gear Bearings (42), Gear Head (38)
and Gear Head Spacer (43).
7. Remove the Spindle Planet Gear Assemblies (32) or
Spindle Planet Gears (34) and Spindle Planet Gear
Bearings (35).
8. Position the Gear Case vertically in an arbor press,
with the motor end down. Using a 7/16” (11 mm)
diameter brass rod against the outer rim of the Spindle
(29), press the Spindle from the Gear Case.
9. Using snap ring pliers, remove the Spindle Bearing
Retainer (49).
10. Tap the externally threaded end of the Gear Case on a
workbench to remove the Grease Shield (46) and
Spindle Bearing (48).
11. Remove the Seal Support (30) from the Spindle.
12. If the Grease Shield Retainer (47) must be removed,
insert a thin blade screwdriver under the tab, and
using a rotary motion, spiral the Retainer out of the
groove in the Gear Case.