The swing pinion spur gear on bottom of vertical swing
shaft meshes with the ring gear mounted on crawler
carbody. The swing brake is mounted on top of vertical
swing shaft.
4-26.
Vertical Swing Shaft
a. Removal.
(1) Swing revolving frame to a position where
shaft can be worked down through the carbody, then
stop engine.
(2) Working from front of revolving frame,
remove vertical propelling shaft gear guard, horizontal
gear train cover, and the two swing brake dirt guards
(TM 5--3810-2101-12).
(3) Remove lubricating line (22, fig. 4-6) which
runs from pilot bearing stand (14) to fit-ting on separator
across front of crane-shovel.
(4) If necessary, remove connector and elbow
from pilot bearing stand (14).
(5) Remove swing brake band (para 4-24).
(6) Remove lever (24, fig. 4-11) and shifter
fork (1) by removing nuts (18), lockwashers (20) and
bolts (28).
(7) Position two wooden blocks on opposite
sides, between brakedrum (28, fig. 4-6) and vertical
swing gear (3, fig. 4-11) on vertical swing shaft.
1
Fitting (2 rqr)
18
Nipple (2 rqr)
2
Coupling (2 rqr)
19
Connector (2 rqr)
(8) Position a jack under shaft (6) to relieve
3
Pilot bearing stand
20
Swivel (4 rqr)
weight, and working from beneath revolving frame,
4
Sleeve bearing
21
Plate
remove wire (28, fig. 4-16), capscrews (6), end washer
5
End plate
22
Elbow (2 rqr)
(27) and swing pinion spur gear (26).
6
Capscrew (2 rqr)
23
Gear
7
Lockwire
24
Line
(9) Remove lockwire (7), screws (6), and end
8
Shim (2 rqr)
25
Shaft
plate (5) from upper end of shaft. Lower the jack
9
Shim (1 rqr)
26
Spur gear
carefully and remove shaft (25) through the carbody.
10
Nut (4 rqr)
27
Washer
11
Lockwasher (4 rqr)
28
Lockwire
NOTE
12
Bolt (4 rqr)
29
Key (2 rqr)
If necessary, carefully drive shaft
13
Brakedrum
30
Bearing
14
Collar (2 rqr)
31
Bolt (2 rqr)
downward from top, using a soft
15
Lockwasher (2 rqr)
32
Plug (3 rqr)
bronze bar.
16
Nut (2 rqr)
33
Jaw clutch
17
Hose
34
Hose
b. Disassembly.
Figure 4-16. Vertical wiring shaft, exploded view.
(1) Remove keys (29) from spur gear shaft
(25).
(5) Disconnect hose (17) at connector on
(2) Remove four nuts (10), lockwashers (11),
elbow (22).
bolts (12), and shims (8 & 9) from pilot bearing stand (3).
(6) Remove nuts (16), lockwasher (15), and
(3) Lift pilot bearing stand (3) off of revolving
bolts (31) and lift shifter collar (14) and jaw clutch (33)
frame.
out of gear (23).
(4) Use a suitable lifting device and lift swing
(7) Separate shifter collar (14) and jaw clutch
brakedrum (13) from gear (28).
(33).
(8) Use suitable lifting device and remove
gear (23) from the revolving frame.
(9) Remove sleeve bearing (4) from pilot
bearing stand (3), and sleeve bearing (30) from revolving
frame.
4-23
