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 316 of 524
TM5-233G-378-14&P
SectionVI. SPRINGSANDSHOCKSMAINTENANCE
Paragraph
Page
Number
ParagraphTitle
Number
5-23
General
.......................................................................................................................................
5-54
5-24
Spring Assembly and Clamp Plate Replacement (M870)
...........................................................
5-54
5-25
Spring Assembly and Bottom Plate Replacement (M870A1) .
.....................................................
5-56
5-26
Radius Rod Screw and Ends Replacement
and Adjustment,
and Axle
Bracket Replacement (M870)
.....................................................................................................
5-58
5-27
Torque Arm Screw and Ends Replacement
and Adjustment
(M870A1)
.....................................
5-61
5-28
Clip Replacement (M870)
...........................................................................................................
5-64
5-23.
GENERAL
This section provides
information for performing
Direct Support level springs and shocks repairs on the M870 and
M870Al semitrailers.
5-24.
SPRING
ASSEMBLY
AND CLAMP
PLATE
REPLACEMENT
(M870).
This Task Covers:
a.
Removal
b.
Installation
Initial Setup:
Toolsrrest
Equipment:
Equipment Conditions:
• Field maintenance tool set (item 4, Appendix B)
Wheel and tire assembly removed (para 3-9).
• Tool kit, general mechanic's:
automotive
(item 7, Appendix B)
• Trestle (3) (item 1, Appendix B)
a.
REMOVAL
NOTE
There
are two
spring
assemblies
and two clamp
plates
on the semitrailer.
This
procedure is for replacing one spring assembly and one clamp plate.
Repeat the
procedure
for the other one.
I
Place hydraulic hand jack under end of equalizing beam (1) closest to spring end (2). Lift equalizing beam
(1) approximately three inches from normal position.
2.
Place trestle under equalizing beam (1) just behind spring slot (3). Remove hydraulic hand jack.
3.
Repeat steps 1 and 2 for equalizing beam (1) at other spring end (2).
4.
Using hydraulic hand jack, lift middle axle (4) and place on trestle.
Remove hydraulic hand jack.
5.
Remove two U-bolts (5) and four washers (6) and nuts (7) from spring assembly (8) and axle (4).
5-54
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