TM-9-2330-356-14
SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1990
TM-9-2330-356-14 - Page 343 of 528
TM 9-2330-356-14
CHAPTER 6
REPAIR OF FRAME AND BODY PARTS
Section I. GENERAL
6-1.
scope
This chapter contains instructions for repair and
replacement of frame and body parts, including the bogie
assembly, which are beyond the scope of the using
organization. These repairs, with the exception of repairs
to tank body or main frame, are allocated to direct support
maintenance. Particular attention must be given to proper
purging of the tank before repairs are made (Chapter 4,
Section XX).
6-2.
Reference
a.
Safety.
Ensure that all safety precautions listed in
the Warning Summary are followed while performing
maintenance. Pay close attention to all WARNINGS and
CAUTIONS.
b.
Procedures.
Procedures for repairs involving
welding, surface preparation, cleaning, and painting are
included under General Maintenance Procedures
(para 5-8).
Section Il. BODY ASSEMBLY AND SUSPENSION
6-3.
Spring Seat Bearings, Wiper and Seals
M967, M969 and M970 except M970 SN TC-0843,
TC-0844, and TC-103 thru T-178).
a.
Disassembly.
(1) Remove suspension spring (para 5-12).
(2) Remove six screws (1) and washers (2) from
cap (3). Remove cap and gasket (4).
(3) Remove jam nut (5), key washer (6), and
bearing adjusting nut (8) from end of trunnion cross tube
(30).
(4) Tap the spring seat with a soft hammer to
loosen outer bearing cone (9). Remove the bearing cone
and spring seat (12). Inner bearing cone (16) and seal
assembly (17) will remain in seat. With offset screwdriver,
pry seal assembly out of spring seat. Remove inner bearing
cone. Do not remove packing retainer (18), felt seals, seal
retaining washer, or wiper seal from trunnion cross tube
unless damaged.
(5) If bearings are being replaced, use a bearing
puller or a hammer and punch to remove bearing cups (10
and 15) from spring seat. The bearing cone and cup must
always be replaced as an assembly.
b.
Cleaning and Inspection.
WARNING
Dry cleaning solvent P-D-680 is toxic and
flammable. Always wear protective goggles
and gloves, and use only in a well-ventilated
area. Avoid contact with akin, eyes, and
clothes, end DO NOT breathe vapors. DO
NOT use near open flame or excessive heat
The solvent’s flash point is 100°F-138°F
(38°C-59°C). If you become dizzy while
using cleaning solvent immediately get fresh
air and medical help. if solvent contacts eyes,
immediately wash your eyes with water and
get medical aid.
(1) Clean spring seat, spindle of trunnion cross
tube, and bearings with dry cleaning solvent (item 11,
Appendix E). Use soft bristle brush to remove old
lubrication.
(2) Inspect seat for cracks or damage. Inspect
bearing cups and replace if worn, pitted, or scored.
(3) Apply thin coating (not over 1/16-inch thick) of
grease (item 17, Appendix E) to inside of seat and to
spindle of tube.
(4) Inspect bearing cones for serviceability and
lubricate as specified in Section I of Chapter 3.
(5) Inspect oil seal (17) for damage or lack of
pliability of sealing material.
c.
Assembly (Fig. 6-1).
(1) Install packing retainer (18), oil seal (19), and
wiper (20) onto trunnion cross tube (30) if removed during
disassembly.
(2) If bearing cups (10 and 15) were removed,
press new cups into spring seat.
Change 3
6-1
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