Maintenance - Greenlee 1904Pg Instruction Manual

Maintenance

Disassembly (photos 1-3)
1. Mount unit to be repaired in
sturdy vise as shown. Remove
ratchet wrench (1) from hub by
depressing locking detent with an
appropriate tool.
Disassembly of Spindle Hub Unit (photos 4-10)
4. Mount unit securely in vise as
shown. Care must be taken to
not damage ball return tube of
the ball nut when gripping with
vise. Then remove 3 set screws
(6) from unit and discard screws
(new screws must be used
during reassembly).
7. To complete disassembly, remove
above unit from vise and regrip on
"flats" of spindle (13). Use "soft"
jaws to prevent damage from hard
vise jaws. Loosen flat head screw
(8) with Allen wrench and remove
top washer (9).
Greenlee Textron / Subsidiary of Textron Inc.
High Capacity Ratchet Knockout Drivers
2. To remove retaining ring (3), use
small screwdriver to remove tab
end of ring from groove and
"spiral" ring out of groove as
shown in photo.
5. Remove hub (7) with ratchet (1)
or any suitable 1/2" drive ratchet
or breaker bar. The hub was
tightened to a torque of 90 ft-lb to
100 ft-lb at the factory. Therefore,
a considerable amount of force
will be necessary to loosen.
Arbor
8, 9, 10. A suitable arbor is needed to perform this operation. Arbor must
have a diameter of approximately 0.840/0.800 inches. Hold arbor flush to
end of spindle. With other hand, screw ball nut toward and onto arbor as
shown. Once ball nut is completely on arbor, ball nut and arbor can be
moved away from spindle (arbor retains ball bearings in ball nut.)
IMPORTANT: If arbor is not the proper size, or is removed from ball nut while apart, balls will fall
free from the race. Should this happen, refer to Assembly of Ball Nut at the end of
the Maintenance section.
3. After retaining ring is removed,
6. Unscrew hub and remove from
8
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815/397-7070
lift spindle hub unit (5) out of
sleeve casting (20).
ball nut.