TM-9-2320-285-24-2
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-2 - Page 388 of 698
TM 9-2320-285-24-2
3-35
BODY AND CAB MAINTENANCE (CONT)
i. Seat (cont).
(2)
Seat Suspension.
This task covers:
a.
Disassembly
c.
Inspection
b.
Cleaning
d.
Reassembly
INITIAL SETUP
Tools
No 1 Common Organizational Maintenance
Snap ring
FSCM 71044 PN 26343-801
Tool Kit
Two roll pins
FSCM 71044 PN 22705-801
Retaining ring pliers
Two roll pins
FSCM 71044 PN 22526-801
Socket wrench set
Nine roll pins
FSCM 71044 PN 22525-801
Screwdriver
Drive lock pin
FSCM 71044 PN 24129-801
Safety glasses
Automotive Mechanic’s Tool Kit
Personnel Required
Hammer
Automotive Repairer MOS 63H
Pliers
Equipment Condition
Punch
Paragraph
Condition Description
Wood block, 2 by 4 by 5 Punch
2-651
Upper seat assembly and
Materials/Parts
suspension assembly removed
Cleaning solvent Item 1, Appendix C
from tractor.
Clean cloths
Item 2, Appendix C
3-35i(1)
Upper seat assembly removed.
Detergent
Item 27, Appendix C
KEY
1
Springs (2)
25 Ball bearing
48 Center pins (2)
2
Locknut
26 Insert
49 Upper pivot arm
3
Nut
27 Pivot bushing
50 Pivot arm assembly
4
Washer
28 Roll pin
51 Flanged bearing
5
Spacer
29 Weight adjustment
52 Locknut
6
Snap rings (2)
handle
53 Thrust washer
7
Roll pin
30 Drive lock pin
54 Nut
8
Pivot lever assembly
31 Roll pin
55 Capscrew
9
Wear plate
32 Roll pins (2)
56 Roll pin
10
Clevis pin
33 Lower hinge pin
57 Miter gear
11
Spacer
34 Upper hinge pin
58 Height adjustment
12
Washer
35 Lower arm assembly
handle
13
Rubber spacer
36 Rubber spring assembly
59 Flanged bearing
14
Shock absorber
37 Roll pin
60 Thrust washer
15
Capscrew
38 Adjuster clevis
61 Vertical adjuster
16
Nut
39 Flanged bearings (2)
bracket
17
Lock washer
40 Flanged bearings (4)
62 Roll pin
18
Release lever
41 Flanged bearing
63 Tube
19
Roll pins (2)
42 Upper arm assembly
64 Thrust washer
20
Hinge pins (2)
43 Flanged bearings (2)
65 Roll pin
-
21
Rear bracket assembly
44 Flanged bearings (4)
66 Miter gear
22
Roll pin
45 Rubber bumper
67 Adjuster stud
23
Adjuster stud
46 Roll pin
68 Base-
24
Washers (2)
47 Roll pin
69 Spring support bracket
3-382
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