PS Magazine - TB 43-PS-731

PS, The Preventative Maintenance Monthly

ISSUE 731

OCTOBER 2013
PS Magazine - TB 43-PS-731 - Page 8 of 33
13
PS 731
OCT 13
TACOM LCMC says the
HMMWV engine repair program
is receiving unserviceable 6.2L
engines mislabeled as 6.5L detuned
engines. So why is that a problem?
All unserviceable 6.2L engines
must be sent to DLA Disposition
Services (formerly called DRMO),
and replaced with the 6.5L detuned
engine, NSN 2815-01-439-6664.
The 6.5L detuned engine is a
drop-in replacement for the 6.2L
engine. And all unserviceable 6.5L
detuned engines must be sent to the
HMMWV engine repair program.
If you still need help identifying your engine, TACOM’s HMMWV engine
maintenance manager, Buck McCuiston, can assist you. He’s at DSN 786-4738, 586-
282-4738, and email:
bucky.v.mccuiston.civ@mail.mil
TACOM’s
HMMWV
engine
item
manager,
Ted Robinson, can assist you with any disposition
issues you may have. He’s at DSN 786-4734, 586-
282-4734, and email:
ted.f.robinson.civ@mail.mil
6.5L Detuned Engine
6.2L Engine
And you can
identify the 6.5L
detuned engine by
looking for the mount
bolt on the
right-
hand
side of the oil
pump/tachometer
drive. You’ll see the
turbocharger mount
casting in front of the
oil pump/tachometer
drive.
If the bolt is on the
left-hand
side of the
oil pump/tachometer
drive, and there’s
no
turbocharger mount
casting in front of the
oil pump/tachometer
drive, you’ve got a
6.2L engine.
Left side of engine
You can identify the
6.2L engine by looking
at the rear of the engine
block, between the
cylinder heads. Locate
the oil pump/tachometer
drive mount bolt on the
top of the engine.
NO
castings
Oil pump/Tach drive
Mounting bolt
on left side
HMMWV…
Know the
Difference
Between
the 6.2L and
6.
5
L Detuned
Engines
if you can’t tell the
difference between
the engines, you
won’t know where to
send them. So here’s
some help…
Right side of engine
Castings
Oil pump/Tach drive
Mounting bolt
on right side
Remember, your unit’s unserviceable 6.2L
engines go to DLA Disposition Services and
unserviceable 6.5L detuned engines go to
the HMMWV engine repair program.
There’s been
confusion
when it
comes to
identifying
the 6.2L and 6.5L
detuned engines
used in basic and A1
HMMWV models.
yeah!
we’re
confused…
… and
they’re
our
engines!
731 12-13.indd
1-2
8/23/13
1:25 PM
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