UNDER CARRIAGE 2250 SERVICE/MAINTENANCE MANUAL
8-2
Published 11-06-15, Control # 040-13
CRAWLER ADJUSTMENT
Maintenance
Crawler wear cannot be eliminated, but the rate of wear can
be reduced through regular preventive maintenance, as
follows:
• Lubricate crawlers as instructed in Lubrication, Section 9
of this manual.
• Keep crawlers clean and avoid dirt build-up when
cutting.
• Keep all mounting bolts tight (see Parts Manual for
applicable torque values).
• Keep treads properly adjusted.
• Inspect crawler gear cases, crawler frames, rollers,
treads, and drive shafts on a regular basis.
Look for oil leaks, excessive wear, cracks, and other
damage. Broken or cracked parts can indicate that the
treads are adjusted too tight.
Repair or replace damaged parts immediately to prevent
further damage.
FIGURE 8-1
59
1
23
51
11
43
19
35
7
55
27
47
15
39
31
58
22
50
10
42
18
34
54
26
46
14
38
30
60
24
52
12
44
20
36
8
56
28
48
16
40
32
57
21
49
9
41
17
33
53
25
45
13
37
29
6
5
4
3
2
A473
Longitudinal Centerline at
Front or Rear of
Carbody or Carrier
Upper
Adapter
Outer
Ring
Inner
Ring
Dowel Pin
(4 each)
View A-A
Upper
Adapter
View B-B
Outer
Ring
Carbody, Carrier,
or Turret
Inner
Ring
Bolts with Hardened
Washers (60 each ring)
B
B
A
A
Carbody, Carrier,
or Turret
FIGURE 8-2
A1052
Straight
Edge
1 in (25 mm) Tight Limit
2-1/2 in (63 mm) Loose Limit
Gap
Crawler
Tumbler
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