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 189 of 524
TM5-2330-378-14&P
4-46. BRAKESHOEREPLACEMENTAND MAINTENANCE.
ThisTaskCovers:
a.
Removal
b.
Cleaning and Inspection
c.
Installation
Initial Setup:
Tools/Test Equipment:
- Retaining clip (2) (Item 23, Appendix
1)
• Common no. 1 tool set (Item 6, Appendix B)
- Retaining ring (4) (Item 25, Appendix 1)
• Tool kit, general mechanic's:
automotive
(Item 7, Appendix B)
Equipment Conditions:
-Tire and wheel assembly removed (para 3-9 or 3-10).
Materials/Parts:
- Hub and brakedrum removed (para 4-68 or4-69).
• Brush, acid swabbing (Item 2, Appendix F)
• Drycleaning solvent (Item 19, Appendix F)
Personnel Required:
Two
a.
REMOVAL
NOTE
There are six pairs of brakeshoes on the semitrailer, one pair behind each wheel
assembly. This procedure is for repairing and replacing one pair of brakeshoes.
Repeat for the other five pairs.
1 .
On the M870A1, remove bolt (1), washer (2), and nut (3) from brake backing plate (4).
2.
Remove four anchor pin retaining rings (5) and anchor pin washers (6) from two anchor pins (7).
3.
Drive two anchor pins (7) out of upper brakeshoe (8) and lower brakeshoe (9).
4.
Remove spring (10) from upper brakeshoe (8) and lower brakeshoe (9).
5.
Pull apart brakeshoes (8 and 9) and remove from axle (11).
8
5
6
6
r
4
7
7
5
10
10
6
6
7
7
4
6
3
1
6
6
%r
1
2
9
5
9
6
6
M870A1
MM
4-101
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