CHAPTER 4: MAINTENANCE OF MAIN ENGINE FUEL, AIR INTAKE,
TM 9-2350-256-20
AND EXHAUST SYSTEMS
4 6 REPLACE FUEL INJECTOR FUEL RETURN HOSE
THIS TASK COVERS
a. Removal
b. Installation
INITIAL SET-UP
Tools:
Parts:
Equipment Conditions:
Tool kit, general mechanic's
Lockwasher (Appendix G,
Engine right and left upper
(Appendix C, item 53)
item 122)
covers removed (see
Pliers, retaining ring, external
Nuts, self-locking (3)
paragraph 4-2)
(Appendix C, item 32)
(Appendix G, item 165)
Engine cooling fan shroud
and related parts removed
(see paragraph 5-4)
WARNING
Do not smoke or use open flame when working on fuel system: explosion may occur, causing
severe injury or death.
a. REMOVAL
1
Remove 10 hose assemblies (1) by loosening coupling nut at each end of hose assembly.
2
Remove two hose assemblies (2) by loosening coupling nut at each end of hose assembly.
3
Remove hose assembly (3) by loosening coupling nut at each end of hose assembly.
4
Remove 12 multiple connectors (4) by removing 12 fluid passage bolts (5) and 24 flat washers (6).
5
Remove tube assembly (7) and tube elbow (8) by loosening coupling nut at each end of tube assembly and removing
two clamps (9).
6
Remove tube assembly (10) and tube elbow (11) by loosening coupling nut at each end of tube assembly and
removing two clamps (12).
7
Remove hose assembly (13) by loosening coupling nut at each end of hose assembly.
8
Remove grommet (14) and two elbows (15).
9
Remove hose assembly (16) by loosening coupling nut at each end of hose assembly.
10 Remove retaining ring (17), nut (18), clinch sleeve (19), and sealing plug (20).
11 Remove tube cross (21), flat washer (22), and nut (23).
12 Remove three loop clamps (24) by removing three self-locking nuts (25) and three screws (26).
13 Remove hose assembly (27) by loosening coupling nut at each end and removing nut (28), lockwasher (29), and flat
washer (30).
14 Remove hose assembly (31) by loosening coupling nut at each end and removing elbow (32) and check valve (33)
from one end, and tee (34) from other end.
4
14