TM 5-3820-233-35/2
Section IV. OVERHEAD CONVEYOR DRIVE
62. General
The drive arrangement for the overhead conveyor is
from the main countershaft by V-belts to a shaft
mounted torque arm speed reducer located on the head
pulley shaft.
63. Overhead Conveyor Drive
a. Removal.
(1) Remove the main countershaft-to-
overhead conveyor drive guard (Operator's Manual).
(2) Remove the conveyor drive belts
(Operator's Manual).
(4) Loosen setscrews in both collars and
remove outside collar from shaft (fig. 38-1).
Figure 38-1. Overhead conveyor drive, removal and
(5) Remove the speed reducer from head
installation.
pulley shaft.
reverse of the numerical sequence as illustrated on
b. Disassembly.
figure 38-2. To install gear (51) and bearings (47),
(1) Drain lubricant from speed reducer.
proceed as follows:
(a) Heat gear (51) in oil to 325o to
(2) Disassemble conveyor drive in
the
350oF to shrink onto hub (53).
numerical sequence as illustrated on figure 38-2
(b) Heat bearings (47) in oil to 270 to
290'F to shrink onto hub (53).
c. Cleaning, Inspection, and Repair
(1) Clean all parts in an approved cleaning
Caution
solvent and dry thoroughly.
Any injury to the hub surfaces where
(2) Inspect oil seals for burrs, or nicks.
the oil seals (41 and 54) rub, will
Replace a defective seal.
cause leakage, and a new hub will
(3) Perform a magnetic inspection of gears,
have to be installed.
shaft, and hub. Inspect gear teeth for wear, pitting,
chipping, nicks, cracks, or scoring. Replace defective
Note
parts.
When pressing bearings (55, 60, and
(4) Inspect housings and covers to see that
61) onto countershaft (58) and shaft
mating surfaces and housing bores are free from nicks
(63), press against the inner race, not
or burrs. Inspect for cracks or breaks. Replace
the outer race of the bearings.
defective parts.
(5) Replace all gaskets.
(2) Fill cavity between the oil seals and
(6) Thoroughly inspect all parts for extensive
housing bores with chassis grease to prevent oil
wear or damage. Replace defective parts as necessary.
leakage.
(3) Refer to the lubrication order in the
d. Reassembly.
Operator's Manual and fill the speed reducer with oil.
(1) Reassemble the conveyor drive in the
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