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

  TM-5-2330-378-14-P - Page 295 of 524

TM5-2330-378-14&P
5-10. TRUNNIONTUBE REPLACEMENT(M870A1)(continued).
NOTE
Trunniontubemaybe rustyanddifficultto remove.Lubricate,clean,andsandas
necessary to remove it.
8.
To aid in removal, clean trunnion tube thoroughly. Thoroughly lubricate trunnion tube with grease after
cleaning.
9.
With the aid of an assistant, drive trunnion tube (3) out of two trunnion brackets (11).
3
9
10
6
5
7
8
1
12
13
b.
INSTALLATION
1 .
To aid in installation, clean and lubricate new
trunnion tube (3).
2.
With the aid of assistant, drive trunnion tube (3)
into twotrunnion
brackets (11). Be suretrunnion
tube (3) is centered in trunnion brackets (11).
2
4
NOTE
A thin
washer
and a thick washer
must be installed
on each
end of trunnion
tube,
between bracket and trunnion clamp.
3.
Install two washers (12) and rubber bushing (13) on each side of trunnion tube (3). Be sure washers (12) are
in correct location.
4.
Lubricate threads of two bolts (8), and install two nuts (10), washers (9), and bolts (8) on trunnion bracket (11).
Torque nuts between 120 and 165 ft-lb (373 and 407 N-m). Repeat for other trunnion bracket (11).
5.
Using dolly jack, lift equalizing beam (2) into place until rubber bushing (13) and trunnion tube (3) are seated.
Repeat for other equalizing beam (2).
6.
Install trunnion clamp (7) on each side of trunnion tube (3).
7.
Lubricate threads of four bolts (4), and secure trunnion clamp (7) with four self-locking nuts (6), washers (5),
and bolts (4). Torque nuts between 275 and 300 ft-lb (373 and 407 N-m). Repeat for other trunnion clamp.
8.
Using hydraulic jack, remove trestles from two rear corners (1) of semitrailer.
FOLLOW-ON
TASKS:
Install tire and wheel assemblies
(para 3-10).
5-33


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