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TM 5-4210-220-34
2-12.
PUMP DRIVE AND PTO - Continued
2-12.4
Reducer Gearbox - Continued
OVERHAUL
(1)
Remove the capscrews (1) and locknuts (2) that
retain the housing halves (3 and 4) together.
(2)
Position housing halves (3 and 4) so they are in
a horizontal position and lift off the upper
housing half (3). Be sure to leave the high speed
shaft (5) assembly and low speed shaft (6)
assembly in the lower housing half (4).
(3)
Lift out the high , speed shaft (5) assembly and
low speed shaft (6) assembly’ from the lower
housing half (4).
(4)
Mark the position of each cap (7 and 8) In
relation to the housing half to which they are
attached.
(5)
Remove the capscrews (18) that retain the open
caps (8) and closed caps (7) to the housing
halves (3 and 4).
(6)
Inspect gears (11 and 12) and bearings (14)
following procedures outlined in para. 2-7. If
any damage is evident disassemble shaft
assembly as detailed in steps 7 thru 11 following.
If bearings and gears are in good condition
proceed to step 12.
Do not attempt to remove both bearing
cones and gear off the shaft at the same
time; one bearing cone will lodge against
the key located under the gear.
NOTE
If one gear is damaged and is going to
be replaced, it is recommended that the
complete gear set be replaced. Both
shafts
are
similar.
Use
following
procedures for both shafts. Low speed
shaft has spacers between bearings and
gear.
(7)
Position shaft assembly (5) on a press bed with
the drive end of the shaft pointing up as shown.
(8)
Press shaft until it is removed from gear (11) and
upper bearing (14). Do not allow the shaft to drop
to the floor because damage may result.
(9)
Invert the shaft and position the inner race of the
bearing (14) on the press bed.
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