TM 5-3810-289-34
(14)
Further dismantling in place is
four screws.
advisable to reduce weight if no crane is available and
(b) Take out two retainer capscrews and
shaft is to be removed manually.
Refer to shaft
remove the shaft retainer (5).
disassembly instructions.
(c) The bearing housing, which is a light
c.
Disassembly.
After Disconnecting and
tapping fit, with the bearing can now he pulled off. Take
Removing Shaft From Machine. See figure 4-11.
care not to damage bearing shield. The bearing can be
(1) General The following subassemblies
removed from the housing by lightly tapping it.
remain on the shaft after carrying out the instructions in
(d) Loosen clutch driver bolt through the
paragraph b. If shaft is to be removed manually, these
split hub, wedge split hub open and remove driver
should be disassembled as far as possible before raising
assembly. Remove driver key.
shaft for stripping operations. If a crane is used these
Note. The entire clutch comes out from housing as a
assemblies can be removed with the shaft and later
unit on the driver and may be disassembled later. Refer
disassembled as required.
to figure 4-11 and disassemble in numerical sequence.
(e) Smooth the shaft with a fine emery cloth
(2) Swing-and-propel clutch. The swing-and
around the keyway, clean carefully and drop on some
propel clutch can be removed as a unit after
engine oil to insure free movement of the tap fit bearings
disconnecting the shifter yoke as described in paragraph
that list slide off over the shaft. Before starting each
a. by loosening the driver bolt, wedging open the split
bearing off inspect the section of the shaft over which it
hub and sliding the entire assembly to the left off from
must slide carefully for any scratches or mars that may
the shaft.
have left upset steel on the surface. Remove heavy burrs
(3) Gears and left bearing.
Refer to
with a fine file.
stripping shaft, d below.
(f) Now pull the primary hoist friction clutch
(4) Boom hoist, clutch and booster. Refer
housing which is integral with the drum sleeve. The right
bearing comes with it, in place. Use a pinch bar and a
(5) Drum lagging. Remove drum lagging.
wood block behind the left end of the drum sleeve to
(6) Front drum clutch Refer to paragraph 4-
bump it off. Take care to protect shield of bearing at left
11.
end of sleeve. Left bearing will usually stay in place on
Note. This clutch can also be removed as a unit
shaft.
from housing on ground or after raising to clear frame.
(g) After the housing is removed from shaft,
(7) Right shaft bearing. Refer to stripping
the outer (or right) bearing may be tapped out of housing
front shaft, d below.
by inserting a bar or hammer handle from the left and
d. Stripping After Removal From the Machine.
tapping it lightly.
(1) General.
(h) Tap the left (or inner).bearing and
(a) These stripping operations are after
spacer off from the shaft.
maximum disassembly of units as described in sections
(i) The boom hoist driver with the booster
referred to in previous paragraph. In other words the
housing on it now slides off.
shaft is now stripped down to those parts which must be
(j) Remove the key and use emery cloth to
pulled off from the ends of the shaft itself. Where shaft
smooth off rough edges of keyway. Use fine file to
is being removed manually it is usually more convenient
remove any heavy burs. Clean, oil, and inspect entire
to remove these units from the left and right as the
shaft.
elevation of the shaft permits sufficient clearance of the
(k) Slide off boom hoist drum, carrying the
shaft. When the shaft is finally removed through the left
right bearing along and leaving its left bearing in place.
door, it carries only the hoist gear and left bearing.
Right bearing can be removed after drum is off the shaft.
(b) Disassembly instructions are presented
(1) Remove left boom hoist drum bearing.
in two sections. Disassembly to the right or disassembly
(m) Slide off left shaft bearing housing. The
to the left.
ball bearing will remain in place, and must be removed to
(c) Either sequence may be taken first. For
left.
instance, to replace the left shaft bearing, start with the
(n) This completes disassembly operations
second section and leave the assemblies to the right on
to the right.
the shaft, disassembling only to the point necessary for
(3) Disassembly operations to the left. (a)
removal of the complete shaft assembly from the
Loosen clutch driver bolt, wedge driver hub open,
machine.
remove entire clutch assembly as a unit or disassemble
(2) Disassembly operations to the right (fig.
in place as may be most convenient. (b) Smooth shaft
around keyway with emery cloth. Clean and oil. Use fine
(a) Remove right hand bearing cover and
file on heavy burrs if
gasket from right end of shaft. Cover is attached with
4-19
