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 266 of 524

TM 5-2330-378-14&P

5-3.

MIDDLEAXLE REPLACEMENT

(M870)(continued).

WARNING

Be certainequalizingbeamis securelysupportedbytrestle. Failuretodoso could

resultin seriousinjuryto personnel.

1

Using hydraulic hand jack, lift spring end of equalizing beam (4) about three inches.

Put trestle under

equalizing beam (4) just behind spring slot (5).

4.

Remove

hydraulic hand jack.

5.

Repeat steps 3 and 4 for the other three equalizing beams (4).

5

6.

Remove

two tire and

4

wheel assemblies (para

3-9).

7.

Remove two hubs and

brakedrums (para 4-68).

0 0

0

8.

Remove two sets of brakeshoes (para 4-46).

9.

Remove two spring brake chambers (para 4-53).

10.

Remove two backing plates and camshafts (para 5-12).

11.

Remove two slack adjusters (para 4-48).

12.

Position dolly jack under balance point of middle axle (6). Lift axle (6) and two spring assemblies

(7) until four

spring ends (8) are clear of four support assemblies (9).

0

8

Jill

9

6

5-4