TM 9-2320-279-34-3
M978 Tanker Maintenance Procedures Instructions (Cont)
(7)
Remove cap (15) from nozzle body (16).
(8)
Remove spring (17), top piece (18), disk
(19), and washer (20).
(9)
Remove lower poppet subassembly (21)
and disc holder (22).
(10)
Remove dashpot cylinder (23) and plunger (24).
(11)
Remove stem (25), packing spring (26), and
packings (27) and (28).
(12)
Remove push nut (29), pin (30), and lever (31).
b. Cleaning/Inspection
WARNING
Adhesives, solvents, and sealing compounds can burn
easily, can give off harmful vapors, and are harmful to
skin and clothing. lb avoid injury or death, keep away
from open fire and use in well-ventilated area. If
adhesive, solvent, or sealing compound gets on skin or
clothing, wash immediately with soap and water.
(1)
Clean all metal parts of fuel nozzle with dry
cleaning solvent.
(2)
Inspect all threaded parts for stripped
threads or mashed ridges and cracks.
(3)
Inspect valve seat of nozzle body for
excessive wear and ridges.
(4)
Inspect valve spring for cracks, breaks, and
kinks.
(5)
Inspect disk and poppet for dents and other
visible damage.
(6)
Inspect stem for burrs and other visible damage.
(7)
Replace all damaged parts.
c. Assembly.
NOTE
(1)
(2)
(3)
(4)
Install stem (6) and tighten spring retainer (7).
(5)
Install disk poppet (5), helical spring (4), preformed packing (3), and cap (1).
(6)
Install lever (31), pin (30), and push nut (29) in nozzle body (16).
(7)
Install packings (28) and (27), packing spring (26), and stem (25).
(8)
Install plunger (24) and dashpot cylinder (23).
(9)
Install disc holder (22) and lower poppet subassembly (21).
(10)
Install washer (20), disk (19), top piece (18), and spring (17).
(11)
Apply thin coat of antiseize lubricant on cap (15) threads and install cap in nozzle body (16).
There are two types of fuel nozzle assemblies. For Model A, perform steps (1)
through (5). For Model B, perform steps (6) through (11).
Install lever (14) and spring pin (13) in nozzle body (2).
Install vane (12) and tube (11) in nozzle body (2).
NOTE
Do not tighten spring retainer on installation.
Install preformed packing (10), packing retainer (9), gland (8), and spring retainer (7) in nozzle
body (2).
d. Follow-on Maintenance. None.
END OF TASK
Change 3
22-107
