1 Screw cap 3/8" x3 " UNC Gr. 2
21
Plug
41
Screw cap 1/2" x 2" UNC Gr. 2
2 Washer, lock 3/8"
22
Nut, full 1/2" UNC
42
Pipe plug 1/4" std, sq. hd.
3 Bearing retainer
23
Washer, lock "
43
Bearing
61
Tee 1/8"
4 Gasket
24
Chain
44
Seal ring
62
Nipple 1/8"
5 Screw, cap 3/8"x 1 UNC Gr. 2
25
Sprocket
45
Screw, cap
63
Elbow
6 Lock wire
26
Retainer
46
Washer, lock 5/16"
64
Pipe nipple 1" x 21/2"
7 Retainer
27
Screw, cap 3/8" x 1" UNC Gr. 2
47
Washer, plain 5/16"
65
Clamp
8 Bearing
28
Wire lock #12 x 5
48
Retainer
66
Hose
9 Gasket
29
Washer, lock 3/8"
49
Seal
67
Clamp
10 Screw, cap 3/8"x1 1/2" UNC Gr. 2
30
Screw, cap3/8"x1"UNC Gr. 2
50
Gasket
68
Pipe nipple 1l" x 2 1/2"
11 Hub
31
Nut, full 3/8" UNC
51
Shaft
69
Screw, cap 3/8" x 1" UNC Gr. 2
12. Oil Gear
32
Chain case support
52
Pin, cotter 1/8" x 3/4"
70
Screw, cap 1, " x " UNC
13 Washer, lock 3/8"
33
Washer, plain 3/8"
53
Lever pin
71
Washer, lock 1/4"
14 Nut, full 3/8" UNC
34
Screw, cap 3/8" x 1" UNC Gr. 2
54
Nut, full 3/8" UNC
72
Cover
15 Pinion
35
Nut, full 3/8" UNC
55
Washer, lock
73
Gasket
16 Gear case over
36
Chain case
56
Shaft
74
Gasket seal
17 Nut, full 3/8" UNC
37
Pipe plug " std. sq. hd.
57
Gasket
75
Gear case
18 Washer, plain 3/8"
38
Screw, cap 1/2"x 1/4" UNC Gr. 2
58
Oil sump
76
Cover
19 Bolt, eye
39
Nut, full 1/2" UNC
59
Pipe plug " std. sq. hd.
77
Clamp
20 Chain case cover
40
Washer, lock 1/2"
60
Pipe plug 1/8" std. sq. hd.
78
Gasket
revolving frame and chain case cover.
(1) Lift upper works (weight, 25, 000 pounds)
(15) Fill gear case with lubricant in accordance
just enough so cone rollers are free in their path. Lift can be
with lubrication order.
made by:
(a) Crane, with sling fastened to lifting
(16) Fill chain case in accordance with
lubrication order.
eyes provided on A-frame yoke and lugs near boom foot
pins.
4-3.
Upper Structure Assembly
a. Disconnect
(1) Position boom and machine as required
for method used.
(2) Release swing lock after blocking
machine to prevent swing.
(3) Remove front cover from swing and
propel gear case (fig. 4-2).
(a) Clean swing and propel gear case
front cover.
(b) Take out capscrews along front edge
of cover and slide forward.
(4) Remove two plugs from oil sump of main
gear case and drain oil (fig. 4-3).
(5) Free upper ends of digging lock control
rod and hollow steering control rod (or sleeve) operating
Figure 4 -2. Front frame cover.
through vertical swing shaft (fig. 4-4).
(a) Remove lever pins connecting
steering clutch lever with vertical control rod.
(b) Loosen capscrews holding steering
clutch and digging lock levers to horizontal control shaft and
control sleeve leading across deck.
(c) Remove reach rod pins attaching to
levers on the outer (right) end of this horizontal shaft and
sleeve.
(d) Slide shaft and sleeve to right until
steering and digging lock levers can be removed from left
(e) If upper works are to be lifted by
end.
crane, the vertical control rod and sleeve can remain in
place as can also the vertical swing shaft. If the upper
works are removed by jacking, about six inches of lift can be
saved by disconnecting the vertical digging lock control rod
and steering control sleeve at their lower ends and pulling
Figure 4-3. Gear case sump.
them up out of the vertical swing shaft. A further saving of
about 15 inches of lift can be made by removing the vertical
swing shaft. (para 4-16).
b. Remove Cone Rollers (fig. 4-5).
4-3
