M978 Tanker Operating Procedures (Cont)
The preferred method for loading transferred fuel is bottom loading with
exterior pump (Para 2-22.a).
If fuel is transferred through the manhole, follow procedures in paragraph
2-22.c including all WARNINGS, CAUTIONS, and NOTES. The operator
of the fuel tank truck or trailer supplying the fuel will follow requirements
in para 2-22.c regarding hose placement within the HEMTT and adjust-
ment of product flow rates.
b. Transfer of Fuel from a HEMTT Tanker to Another Tanker Truck or Trailer.
When transferring fuel from a HEMTT to another tank truck or trailer, fol-
low instructions including all WARNINGS, CAUTIONS, and NOTES for
unloading fuel (para 2-25) with the following changes.
Connect SR1 and SR2 static cables to vehicle to which fuel is being trans-
ferred and to grounding devices.
The end of the suction hose which is connected to the receiving receptacle
shall be connected in accordance with the applicable tanker truck or trailer
The preferred method for unloading fuel to another tanker is filtered bulk
unloading (para 2-25.a).
If fuel is transferred to another tanker using the fuel servicing hose, follow
procedures in paragraph 2-23.a, except that the nozzle is not attached. Fol-
low instructions in the receiving tankers technical manuals and FM 10-71
regarding positioning of the hose in the receiving tanker and adjustment of
product flow rates.
2 - 2 7 . C O N N E C T / D I S C O N N E C T S E M I T R A I L E R T O M 9 8 3 .
a. Connect Semitrailer fo Vehicle.
N O T E
Tractor used to pull M790 and XM860A1 trailers is
equipped with material handling crane, generator set, and
fifth wheel to accept 2 inch (51 mm) kingpin. Tractor used
to pull XM974trailer is equipped with trailer spare tire and
fifth wheel to accept 3.5-inch (89 mm) kingpin.
This is a two-soldier task if tractor is equipped with crane.
One soldier drives vehicle while other soldier stands be-
side front of semitrailer.
M983 tractor with crane has one fifth wheel lock release
handle. M983 tractor without crane has two fifth wheel
lock release handles.
If tractor is equipped with crane, go to step (2).