TM 9-2320-279-20-3
M978 Tanker Maintenance Instructions (Cont)
Section IV. PIPING AND VALVES
25-11. TANKER PIPING REMOVAL/INSTALLATION.
This task covers:
a. Typical Pipe Coupling and Coupling Gasket
d. Typical Clamp and Bracket Installation
Removal
e. Tanker Piping
b. Typical Pipe Coupling and Coupling Gasket
f. Tanker Piping Brackets
Installation
g. Follow-on Maintenance
c. Typical Clamp and Bracket Removal
INITIAL SETUP
Models
Equipment Condition
M978
TM or Para
Condition Description
Test Equipment
Para 25-3
Tank drained.
None
TM 9-2320-279-10 Pump module top and rear
Special Tools
access doors opened.
Para 16-48
Pump module left and right
None
side access panels removed.
Supplies
Special Environmental Conditions
Grease, automotive and artillery, Item 23,
None
Appendix C
General Safety Instructions
Personnel Required
No smoking, flame, sparks, hot or glowing
MOS 63S, Heavy wheel vehicle mechanic
objects within 50 ft (15 m) of vehicle.
References
None
a. Typical Pipe Coupling and Coupling Gasket Removal.
NOTE
l This procedure is for reference only to show
location of M978 tanker piping. It will never be
necessary to remove all the piping at one time.
Refer to 25-11.e for locations of specific piping
sections.
l All piping sections on the M978 tanker are
joined with pipe couplings. Five sizes of
standard couplings and two sizes of reducing
couplings are used: 1-1/4-inch, 2-inch, 3-inch,
4-inch, and 4-1/2-inch standard couplings, and
4 x 3-inch, 3 x 2-inch reducing couplings.
l All standard and reducing couplings are
removed the same way. Reducing coupling is
shown.
Read paragraph 25-2.b before removing piping,
valves, adapters, and couplings.
(1) Remove two nuts (1), screws (2), and coupling halves (3) from coupling gasket (4).
25-50
