SK752 Operator’s Manual Service - 75
As Needed
Adjust Idler Roller Bearings
Adjust idler roller bearings to keep dirt, grass,
and other foreign matter from damaging bearings
as needed when hubs become loose.
1. Release track tension. See See “Check
Track Tension” on page 64.
1. Remove dust cap (1).
2. Ensure bearings are properly seated by
tightening castle nut (2) to 30-40 ft•lb (40.7-
54.2 N•m) while turning the hub (3).
3. Loosen the castle nut (2).
4. Hand-tighten the castle nut.
5. Insert the cotter pin (4) into the wheel spindle (5).
6. Bend the legs of the cotter pin over the top of the spindle.
7. Clean the lip seal on the bearing cap and replace using Loctite
®
242.
8. Adjust track tension.
IMPORTANT: Do not move the hub
after this step is completed.
IMPORTANT: If cotter pin cannot be inserted, loosen the castle nut until it can be.
IMPORTANT:
• When assembled correctly, the castle nut should be free to move by hand with only the cotter
pin holding it in place.
• The hub should not have noticeable movement when rocked back and forth.
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