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 300 of 524
TM 5-2330-378-14&P
5-13. CAMSHAFTREPLACEMENT(M870A1).
ThisTaskcovers:
a.
Removal
b.
Installation
Initial Setup:
Tools/Test Equipment:
Equipment Conditions:
Common no. I too] set (Item 6, Appendix B)
- Drain cocks open (para 3-8)
e Slack adjusters removed (para 4-48).
Materials/Parts:
- Brakeshoes removed (para 4-46).
• Bushing (Item 2, Appendix 1)
• Lockwasher (4) (Item 16, Appendix 1)
Personnel Required:
Two
• Preformed packing (2) (Item 22, Appendix 1)
• Preformed Packing (2) (Item 23, Appendix 1)
a.
REMOVAL
NOTE
There
are six camshafts
on the semitrailer.
This
procedure
is for replacing
one
camshaft.
Repeat this procedure for the remaining five.
I
Remove four bolts (1), lockwashers (2), and nuts (3) from two retaining plates (4). Discard lockwashers.
2.
Remove two retaining plates (4) and preformed packings (5) and bearing (6) from camshaft bearing bracket
(7). Discard preformed packings.
NOTE
It may be necessary to tap camshaft out of backing plate using mallet.
3.
Hold retaining ring (8) open and slide camshaft (9) forward, out of camshaft bearing bracket (7). Remove
retaining ring (8) and washer (10) from camshaft (9). Slide camshaft (9) out of backing plate (11).
4.
Slide plate spacer (12) off camshaft (9).
5.
Remove lubrication fitting (13) from backing plate (11).
6.
Remove two preformed packings (14) and bushing (15) from backing plate (11).
Discard bushing and
preformed
packings.
b.
INSTALLATION
1.
Install new bushing (15) and two new preformed packings (14) in backing plate (11).
2.
Install lubrication fitting (13) in backing plate (11).
3.
Slide plate spacer (12) onto camshaft (9).
4.
Install two new preformed packings (5) and retaining plates (4) and bearing (6) on camshaft bearing bracket
(7).
5.
Install four nuts (3), lockwashers (2), and bolts (1) on two retaining plates (4) and camshaft bearing bracket
(7)-
5-38
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