TM 5-3810-300-24 & P2
NOTE: On some machines It Is very difficult to
remove the Input shaft (14) from the bearing
NOTE
support housing (11). Snap rings In the
bearings
and
housings
are
nearly
The pump drive does not have to be
impossible to remove without destroying the
removed from the crane to service
front bearing (7). The splined input shaft
the input shaft or du bearing support
(14) Is held into the bearings by a snap ring
housing assembly. To service the
between the bearings. Use of a cutting torch
output pinions or bearings, remove
should be limited as much as possible. The
the pump drive from the crane.
recommended procedure Is to cut the
bearing race with a hammer and chisel.
1. Drain the oil from the pump drive.
Carefully remove the first bearing (7), then
2. Remove the pumps. Refer to Hydraulic Pumps.
the snap rings (6 & 8) con be removed from
3. Disconnect the cable from the shift shaft.
the input shaft (14). The pump drive unit
4. Remove the bolts securing the yoke flange to the
should be disassembled and inspected for
Input shaft 5. Remove the four mounting bolts holding
slog damage to other parts after using this
the mounting bracket to the frame.
procedure.
6.
Remove the pump drive.
6. Remove the front bearing (7) from the bearing
support housing (11).
DISASSEMBLY.
7. Remove the snap ring (8) from the input shaft (14).
8. Press the input shaft (14) out of the bearing support
housing (1 I).
NOTE
9. Press the bearing out of the bearing support
housing (11).
The pump drive does not have to be
10. Remove the seal (12) from the input shaft (14).
removed from the crane to service
the input shaft and bearing support
NOTE
housing assembly. To service the
output pinions or bearings, remove
Do not remove the expansion plug
the pump drive from the crane.
(13) from the end of the input shaft
(14) unless it is leaking.
1. Remove the four nuts (15) holding the input shaft
(14) and support bearing housing (11) in the gearbox
11. Remove the roll pin (5) from the end of the shift
(23).
shaft (40).
2. Remove the input shaft (14) and support bearing
12. Remove the two washers (2 and 3). the connector
housing (11).
shaft.(4), and the other two washers (2 and 3) from the
3. If the pinion gear (19) comes out with the input
shift shaft (40).
shaft assembly, remove it from the end of the input
13. Remove the snap ring (1) from the shift shaft (40)
shaft (14).
and the detent ring (39) from the connector shaft (4).
4. Remove the connector shaft assembly (4) from the
14. Remove the nuts and lockwashers (33 and 34)
input shaft assembly.
fastening the pump adaptors (28 and 36).
15. Remove the pump adaptors (28 and 36).
16. Remove the output pinion gears (26 and 38) and
pull the bearings (25).
17. Remove the oil seal (37) from the gearbox (23).
NOTE
CLEANING AND INSPECTION.
Do not disassemble the input shaft
(14) and support bearing housing
CAUTION
(11) assemblies unless there is a
need to replace one of the
DO NOT USE GASOLINE AS A SOLVENT.
component parts. Steps 5 through 8
refer to this disassembly.
5. Remove the large outer snap ring (6) from the
support bearing housing (11).
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