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 285 of 528
TM 9-2330-356-14
(d)
Remove emergency valve, pipe, adapter,
and gasket from tank sump.
(e)
Remove coupling gasket from
emergency valve.
(2)
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 skin, eyes, and
clothes, and 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.
(a)
Clean valve with dry cleaning solvent
(item 11, Appendix E).
(b)
Replace gaskets. Inspect valve for
cracks, distortion, and wear.
(3)
Installation.
(a)
Slide coupling gasket onto emergency
valve.
NOTE
Be sure pipe is engaged with vent.
(b)
Install valve, pipe, adapter, and gasket to
tank sump and attach eight nuts. Tighten nuts to
50-75 lb.-ft.
(c)
Slide gasket over joint and attach
coupling (para 4-85). Tighten nuts to 104-116 lb.-ft.
(d)
Reconnect emergency valve cable to the
emergency valve lever. Tighten the two U-bolt nuts.
Check for proper operation of emergency valve and cable
adjustment (para 4-52).
Pump Bypass Valve (M970 and M970A1)
(Fig. 4-140).
(1)
Adjustment. The
pump bypass valve is preset
at 45 psi. No further adjustment is necessary.
(2)
Removal.
Remove two nuts and bolts from
both couplings and remove couplings. Slide gaskets back
and remove valve. Unscrew the two nipples.
TA099870
Figure 4-140. Pump Bypass Valve (M970 and M970A1).
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 skin, eyes, and
clothes, and 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.
(3)
Cleaning and Inspection.
Clean with dry
cleaning solvent (item 11, Appendix E). Inspect coupling
gaskets, valve seat, and body.
(4)
Installation.
Screw nipples into valve and
tighten with a pipe wrench. Slide flange coupling gaskets
over nipples. Position valve and slide gaskets over joints
(para 4-85). Attach split couplings. Tighten nuts to
95-105 lb.-ft.
4-149
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