NMC-WOLLARD 140 - Page 81

NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M140 Tow Tractor Manual No. 46054
PAGE 1-21
CHAPTER 2 MAINTENANCE
1 SERVICING
AUGUST 31, 2008
4. Remove cotter pin, spindle nut, and washer from spindle.
5. Remove hub. Outer wheel bearing cone will slide out of hub. Inspect
outer bearing cone and cup. Remove bearing cone and cup if they appear
damaged in any way. (Always replace cup and cone as a set.)
NOTE: Always replace grease seals.
6. Remove grease seal. Inspect inner bearing cone and cup. Remove
bearing cone and cup if they appear damaged in any way. (Always replace
cup and cone as a set.)
7. Using a clean rag, wipe old grease from spindle, hub, and bearings.
8. Install new outer bearing cup, if removed.
9. Install new inner bearing cup, if removed.
10. Install new grease seal, if removed, using a plug to place pressure evenly
around seal. If you bend or otherwise damage seal, discard and use a
new one.
NOTICE!
seal to fail or grease cap to pop loose after assembly.
11. Spread grease inside hub cavity.
12. Use grease to lubricate the seal lip.
13. Install hub. Rotate hub while installing to spindle so seal doesn’t roll under.
As spindle goes into inner cone, try to feel that all parts are straight and
properly seated on spindle bearing journal.
14. Grease outer cone and place over spindle and into cup.
15. Assemble washer and nut to spindle. Tighten nut to 10-15 ft-lbs torque.
Rotate hub while tightening nut.
16. 󰀨
17. 
with slot in nut. Check hub for excessive end play. Excessive end play
indicates that nut is too loose. Hub should rotate freely, but if hub binds or
if you can feel the bearings, it means that the nut is too tight. Readjust nut
if needed.
18. Insert cotter pin and bend to lock it on nut. Fill grease cap with grease and
snap into place.
19. Check seal for a turned-under lip. Check hub for any indication of
roughness which might indicate misalignment. If roughness is noted,
disassemble hub and check inner cup for any small nick. If a nick is found,
the hub must be replaced.
20. 