NOTE
Tank must contain at least
1000 gallons of fuel before doing
adjustment procedure.
(1) Check tanker fuel level
(TM 9-2320-279-10).
(2) Start engine (TM 9-2320-279-10).
(3) Set PTO ENGAGE switch (1) to ON
position. Check that indicator
light (2) comes on.
TM 9-2320-279-20-3
M978 Tanker Maintenance Instructions (Cont)
c. Adjustment.
(4) Push in V6 FUEL/DEFUEL
CONTROL VALVE control rod (3).
(5) Pull back MC MANUAL
CONTROL EM VALVE lever (4).
(6) Push PUMP ENGAGEMENT
LEVER (5) forward.
(7) Set TC/THROTTLE CONTROL
switch (6) up to ON position.
(8) Press HI/HIGH IDLE switch (7).
(9) Read discharge line pressure
gage (8). Gage should read 55 psi
(379 kPa). If gage does not read
55 psi (379 kPa), do steps (10)
through (20).
25-89
