NMC-WOLLARD 140 - Rear Wheel End Installation

14. Rotate the star wheel to make sure it can easily rotate with a “click” in one direction
and cannot easily rotate in the other direction.
15. Connect brake line to wheel cylinder. Tighten tube fitting firmly. Do not over
tighten.
16. Bleed brake system as described in Chapter 2. Check for leaks when bleeding
system.
17. Assemble and install rear wheel end as described in paragraph 1.5.5.
1.5.5 Rear Wheel End Installation
Item numbers refer to AXLE-Rear, see parts illustration in Chapter 4..
1. Apply to inner bearing cone (item 22) and install bearing cone.
2. Press in a new oil seal (item 23).
3. If hub and drum were separated, assemble drum and hub using bolts and washers
(item 26 and 25) and tighten to 85-115 ft-lbs torque.
4. Install hub and drum assembly onto axle spindle, being careful not to damage oil
seal.
5. Apply to outer bearing cone (item 17) and install bearing cone.
6. Install wheel bearing adjusting nut (item 16) and tighten to obtain 5-8 in/lbs rolling
torque.
7. Install planetary ring gear (item 14). Wheel bearing adjusting nut roll pin (item 15)
must line up with hole in planetary ring gear.
8. Install axle shaft/sun gear assembly.
9. Apply MIL-S-46163 Type II sealant to mating surface of the planetary spider cover
hub.
10. Install planetary spider assembly to hub using and washers (item 1 and 2). Secure
with 85 to 115 ft-lbs.
11. Remove differential fill plug (upper plug) and fill with oil (80W-90 or 85W-140) to
level of plug hole. Apply a non-hardening sealing compound (like #51 or
equivalent) to plug threads and install and tighten plug.
12. Turn each wheel so wheel end plug is horizontal to axle shaft. Fill wheel ends with
oil (SAE 80W-90 or 85W-140) to level of plug hole. Apply a non-hardening sealing
compound (like Permatex #51 or equivalent) to plug threads and install and tighten
plugs.
After initially mounting wheel and tire assembly, recheck lug nut torque
after the first hour of operation and after the first 8 hours of operation. After this, check
monthly or every 250 hours, whichever comes first. Do not lube wheel studs as it will result
CHAPTER 3 OVERHAUL AUGUST 31, 2008
1 GENERAL REPAIR PAGE 9
M140 Tow Tractor Manual No. 46054