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 284 of 524

TM 5-2330-378-14&P

5-7.

EQUALIZINGBEAM REPLACEMENT(M870).

This Task Covers:

a.

Removal

b.

Installation

Initial Setup:

Toolsfrest

Equipment:

9Self-locking nut (2) (item 35, Appendix 1)

• Field maintenance tool set (Item 4, Appendix B)

* Self-locking nut (2) (item 36, Appendix 1)

• Tool kit, general mechanic's:

automotive

(item 7, Appendix B)

Equipment Conditions:

• Trestle (3) (item 1, Appendix 13)

* Semitrailer unloaded (para 2-10).

* Wheels chocked (pare 2-10)

MaterialstParts:

Self-locking nut (4) (item 34, Appendix 1)

Personnel Required:

Two

NOTE

There are four equalizing beams on the semitrailer. This procedure is for replacing

one equalizing

beam.

Repeat this procedure for the remaining three.

1 .

Remove screw (1), spacer (2), and nut (3) from equalizing beam (4).

4

3

2.

Using hydraulic hand jack, lift rear corner of semitrailer (5) on

side where equalizing

beam (4) is being replaced, until weight

is off suspension system but tire and wheel assemblies still

touch the ground.

3.

Put trestle under rear corner of semitrailer (5).

4.

Remove tire and wheel assembly from middle axle (para 3-9).

Support middle axle (6) on trestle under spring clamp plate (7).

5-22