UNDERCARRIAGE MLC650 SERVICE/MAINTENANCE MANUAL
8-26
Published 09-09-16, Control # 229-09
CRAWLER TREAD SLACK MEASUREMENT
Check the tread slack at the tumbler end of each crawler.
Maintain equal tread slack at both crawlers.
Travel forward or reverse on a firm level surface until all
tread slack is in the top of treads at the tumbler end of the
crawlers.
1. Place a straightedge (13, Figure 8-16
) on top of the
tread. Measure the gap (14) between the straightedge
and the top of the tread at the lowest point.
• Tight limit gap—38,1 mm (1.5 in)
• Loose limit gap—76,2 mm (3 in)
2. If the gap exceeds the tight or loose limits, adjust the
crawler tread slack (see Crawler Tread Slack
Adjustment on page 8-27).
FIGURE 8-16
Item Description
1Nut
2Cover
3 Quick Connect Fitting
4 Crawler Jack Cylinder
5Rod
6Shim:
06 mm (0.24 in)
12 mm (0.47 in)
25 mm (0.98 in)
7 Tread
8 Crawler Roller
9 Hand Pump
10 Center Punch Line—Shaft
11 Center Punch Line—Crawler Frame
12 Crawler Tumbler
13 Straightedge
14 Gap
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