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 451 of 528

TM 9-2330-356-14

8-11.

Gate Valve, M970 and M970A1 (Fig. 8-15)

NOTE

It is not necessary to remove valve to replace

packings.

a.

Removal.

Remove valve (para 4-85).

b.

Disassembly.

(1) Secure valve.

(2) Loosen packing nut (1). Turn hand wheel (2)

counterclockwise to force packing (3) and packing gland

(4) free from the valve body (5). Remove nut (6) and hand

wheel (2).

TA502308

Figure 8-15. Gate Valve.

c.

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.

(1) Clean all metal parts with dry cleaning

solvent (item 11, Appendix E).

(2) Inspect for cracks. If valve is removed from

the semitrailer, check sealing surfaces for pitting or

scoring. If any damage is noticed, replace valve.

d.

Assembly.

(1) Install new packing (3). Install packing gland

(4) and packing nut (1). Tighten nut two full turns.

(2) Install hand wheel (2) and nut (6). Tighten

nut.

e .

Installation.

Install valve (para 4-85).

8-12. Gate Valve, M970 and M970A1 (Fig. 8-16)

NOTE

It is not necessary to remove valve to replace

packings.

a.

Removal.

Remove valve (para 4-85).

b.

Disassembly.

(1) Secure valve.

(2) Loosen packing nut (1). Turn hand wheel (2)

counterclockwise to force packing (3) and packing gland

(4) free from the bonnet (5). Remove nut (6) and hand

wheel (2).

8-21