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 312 of 524

TM5-2330-378-14&P

5-20. GOOSENECKHINGEPIN REPLACEMENT

(M870A1).

ThisTaskCovers:

a.

Removal

b. Installation

Initial Setup:

Toolsrrest

Equipment:

Equipment

Conditions:

• Common

no. 1 tool set (item 6, Appendix

B)

Gooseneck in upright position (para 2-8).

• Crane, wheel mounted (item 2, Appendix B)

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

Personnel Required:

Two

• Tool kit, general mechanic's:

automotive

(Item 7, Appendix B)

Materials/Parts:

Cotter pin (item 3,

Appendix 1)

REMOVAL

1.

Using crane, lift front of semitrailer.

2.

Place two one-foot-high wood blocks (1) under two landing pads (2). Lower f ront of semitrailer onto blocks

(1).

3.

Remove cotter pin (3) from gooseneck hinge pin (4).

Discard cotter pin.

WARNING

Do not work under gooseneck unless lockpins are in place. Working under goose-

neck when lockpins are not in place could result in injury or death.

4.

Remove lockpin (para 2-10).

5.

Lower front of semitrailer until gooseneck (5) is fully extended.

WARNING

Placement of jacks is extremely important in this procedure. Failure to place jacks

properly could result in injury or death.

6.

Place hydraulic jack under each end of upper-deck side rail (6).

7.

Raise hydraulic jack at front of side rail (6) until hinge pin (4) can be turned with pipe wrench.

5-50