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 238 of 524

TM5-2330-378-14&P

4-69. HUB AND BRAKEDRUMMAINTENANCE[M870A1).

ThisTaskCovers:

a.

Removal

b.

Cleaning

c.

Inspection

d.

Installation

Initial Setup:

Toolsrrest

Equipment:

* Rag (item 15, Appendix F)

* Common no. 1 tool set (item 6, Appendix B)

- Sealing compound (item 16, Appendix F)

-Tool kit, general mechanic's:

automotive

- Solvent, drycleaning (item 19, Appendix F)

(item 7, Appendix B)

* Gasket (item 5, Appendix 1)

• Body, seal inserter (item 1, Appendix D)

- Gasket (Item 6, Appendix 1)

• Guide, bearing insertion (item 2, Appendix D)

- Lockwasher (7) (item 13, Appendix 1)

• Head, axle tool (item 3, Appendix D)

• Inserter, seal (Item 4, Appendix D)

Equipment Conditions:

- Tire and wheel assembly removed (para 3-1D).

MaterlaislParts:

- Air reservoirs charged (para 3-8).

Lubricating oil (item 10, Appendix F)

REMOVAL

21

15

1.

Remove vent plug (1) from win-

12

13

dow (2).

9

2.

Remove

six screws (3) from re-

6

tainer ring (4).

3.

Remove retainer ring (4), window

3

(2), and gasket (5) from access

cover (6). Discard gasket.

4.

Remove six screws (7) and lock-

washers (8) from access cover

7

(6). Discard lockwashers.

5

2

20

5.

Remove access cover (6) and gas-

ket (9) from hub (10).

Discard

gasket.

16

6.

Remove outer spindle nut (11),

lockring (12), and inner spindle

nut (13) from hub (10).

Discard

lockring.

14

7.

Pull hub (10) and brakedrum (14)

forward slightly, then push back to

18

19

expose outer bearing cone (15).

17

Remove outer bearing cone (15)

22

from spindle (16).

4-150