Manitowoc 777 Service And Maintenance Manual

Reference Only
UNDER CARRIAGE 777 SERVICE MANUAL
8-2 Published 10-01-2012, Control # 045-08
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 in Section
9 of this manual.
• Keep crawlers clean and avoid dirt build-up in crawler
frame.
• Keep all mounting bolts tight (see Parts Manual for
applicable torque values).
• Keep treads properly adjusted.
• Inspect crawler gear cases, crawler frames, rollers, and
treads on a regular basis.
FIGURE 8-1
B
C
Rotating
Bed
Outer
Ring
Access Hole
(4 places)
Carbody
Inner
Ring
View A-A
A
B
C
Rotating
Bed
Outer
Ring
Carbody
Inner
Ring
View B-B
Item Description
A Dowel Pin (used to locate inner
ring of rotating bed)
BGrade 8 Bolt –
1-1/4 inch, 7 UNC x 8 inch Long
• 60 in Outer Ring
• 52 in Inner Ring
C 1-1/4 inch Flat Steel Washer –
• 60 in Outer Ring
• 52 in Inner Ring
26
10
22
28
6
14
30
16
17
3
9
23
29
5
13
31
7
18
2
12
19
25
15
21
27
4
20
32
8
24
11
1
A
A
B
B
2
12
20
14
18
6
28
16
10
4
27
25
23
21
7
19
11
1
13
17
5
15
9
3
24
26
22
8
Access to inner ring bolts is
through hole in center of the
carbody and 4 access holes.
Bold Numbers Indicate
Tightening Sequence
FRONT of
Rotating Bed
and Carbody

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English