SK600 Operator’s Manual Service - 73
Procedures
Idler Roller Bearings
Check every 300 hours. Adjust as needed.
Check
1. Lift machine off ground.
2. Release track tension. See “Track Tension” on
page 76.
3. Check for movement of each hub (shown)
when rocked back and forth. If hub has
noticeable movement, adjust idler roller
bearing.
4. Tension track.
Adjust
1. Release track tension. See “Track Tension” on
page 76.
2. Remove bolts (1, drive roller) or flange lock
nuts (8, idler roller) and lug nuts (3) to
remove dust cap retainer (2).
3. Remove dust cap (4).
4. Remove cotter pin (6).
5. Ensure bearings are properly seated by
tightening castle nut (5) to 30-40ft•lb (40.7-
54.2N•m) while turning the hub (7).
6. Loosen castle nut.
7. Hand-tighten castle nut.
8. Insert cotter pin into wheel spindle (9).
9. Bend legs of cotter pin over the top of the spindle.
10. Reassemble.
11. Tighten lug nuts to 80ft•lb (108N•m).
12. Adjust track tension.
NOTICE: Do not move hub after this
step is completed.
NOTICE: If hole is visible in slot but cotter pin cannot be inserted, slightly loosen or tighten
castle nut to align slot with hole and insert cotter pin. If hole is not visible in slot, loosen to next
available slot and install cotter pin.
IMPORTANT: Hub should not have noticeable movement when rocked back and forth.
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