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 275 of 524
TM5-2330-378-14&P
5-4.
MIDDLEAXLE REPLACEMENT(M870A1)(continued).
WARNING
Keepfingersfrombetweenequalizingbeamendsandspringendswhilebalancing
axleas itismovedandliftedintoplace. FailuretodosocouldresultinseriousInjury.
6.
Position dolly jack at balance point of middle axle (6). While two assistants balance two spring assemblies
(7) and axle (6), use dolly jack to lift axle (6) and spring assemblies (7) from blocking.
7.
Place axle (6) and two spring assemblies (7) under semitrailer.
8.
Using dolly jack, raise axle (6) and both spring assemblies (7) carefully until f ront of each spring assembly (7)
clears slot in each of two front equalizing beams (4).
9.
Install new self-locking nut (10) and keeper bolt (9) on each of two f ront equalizing beams (4).
10.
Move dolly jack backward carefully until rears of two spring assemblies (7) clear slots in two rear equalizing
beams(4). Lubricate threads on locknut (10) and install locknut (10) and keeper bolt (9) on each of two rear
equalizing beams (4). Torque four keeper bolts (9) between 73 and 97 ft-lb (99 and 132 N-m). Carefully lower
two spring assemblies (7) into position in four equalizing beams (4), with four spring ends (8) resting on four
keeper bolts (9)
0
4
8
0
9
7
6
4
10
it.
Install two adjustable
torque arm ends on middle
axle (pare 5-27).
12.
Install spring brake chambers on middle axle (para
4-53).
I&
Install slack adjusters on middle axle (pare 4-48).
14.
Install tire and rim assemblies
on middle axle (para
3-10).
9
5-13
Back to Top
