TM-5-2330-378-14-P
SEMITRAILER, LOWBED: 40 TON CONSTRUCTION EQUIPMENT TRANSPORTER M870 AND M870A1
TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
JUNE 1999
TM-5-2330-378-14-P - Page 85 of 524
TM 5-2330-378-14&P
3-10. TIRE ANDWHEELASSEMBLYREPLACEMENT(M870A1)(continued).
3.
With the aid of an assistant, install outer tire and wheel assembly (5) on six studs (2). Be sure outer valve stem
(12) is pointing in and is 120 degrees away from inner valve stem (10).
4.
Install three rim clamps (7) and six rim stud nuts (1) on six studs (2).
NOTE
A torque wrench should be used to tighten rim stud nuts. If torque wrench is not
available, tighten rimstud nutswithwrench
and barl2to
15inches in length, pushing
down with full body weight.
5.
Tighten six rim stud nuts (1) in the sequence shown.
1
6
9
0
0
1
3
@0
0
0
(3
4
0
2
7
6.
After three rim clamps (7) are properly seated, tighten six rim stud nuts (1) one-quarter turn at a time, in the
sequence shown. Torque rim stud nuts between 200 and 250 ft-lb (271 and 339 N-m).
7.
Charge air system to proper pressure.
Refer to operator's manual for truck tractor.
8.
Check alignment of tire and wheel assemblies
(5 and 6). Place block of wood or similar object on floor at side
of tire, and rotate wheel.
It variation in distance between tire and block of wood exceeds 1/16 inch for front
wheels or 1/8 inch for rear wheels, rim is not properly mounted.
To correct, loosen nut on the side with the
greatest deviation and tighten nut on the opposite side.
Recheck torque.
NOTE
Rim nuts should be checked for propertorque
afterthe f irst 50 to 100 miles of service.
9.
Remove trestle from under axle (4). Lower inner and outer tire and wheel assemblies (6 and 5). Removeand
stow hydraulic hand jack (3).
10.
As soon as possible,
notify Unit maintenance
of tire change and have rim nuts properly torqued.
FOLLOW-ON
TASKS:
None
3-23
Back to Top
