1994 HMMWV A1 differences from the 93 Please help

[MarkM]

I am looking at a 1994 HMMWV A1 4 door and trying to find out the differences from the pre 94 models. I know the seats are better and it has the heavier duty half shafts but does it also sit a little higher as I believe the payload is higher. Any help would be greatly appreciated. Any other differences? Thank,

Mark

 

[OPFORMI]

The year on a HMMWV has no real bearing on it's capabilities. An M998 built in 1986 is the same specs as one built in 1993. The different models are going to determine what specs the machine is, i.e. M998, M998A1, M1038, M1123, M1097, etc...

 

[Lionel]

From AM General's site;

"A1 advances incorporated across the new production fleet included: new front seats, improved parking brake lever with safety release, metal hood grille, improved slave receptacle, solid state glow plug controller, modified rifle mounts and upgraded rear half shafts."

I know my '94 A1 also has the brake upgrade that incorporates the parking brake into the rear calipers, eliminating the propeller shaft disk brake. Not sure if that was across the entire "94 production run. It also has reinforced front air lift loops. (flat bar welded at the bottom part of the loop)

 

[Retiredwarhorses]

The brake upgrade is on all HMMWV's that went through reset or done at units via contractors.
it was safety upgrade...

 

[Lionel]

Retiredwarhorses. Was anything else upgraded during the resets? Was this was part of an MWO or several MWO's? Thanks, L

 

[DatGuyC]

I think the A1's have the progressive rear springs with the cast spring perches, which gives them the higher payload.

 

[MarkM]

WOW some great info thank you. Anything else that changed? If I get it I may go for the Airlift bumper then the Rhino spare tire setup.

Mark

 

[Action]

Why would AMG only upgrade the rear shafts?
Seats and seatbelt were also upgraded.

 

[Lionel]

I have no clue, but that quote was straight from their current website.

 

[Retiredwarhorses]

Retiredwarhorses. Was anything else upgraded during the resets? Was this was part of an MWO or several MWO's? Thanks, L

Of course...just depends on how old the truck was and want MWO's had not already if any that had been applied.
mwo's like seats, brakes, PS cooler, spindle nuts.
A1 trucks still had the non casted upper spring seats....I think they just changed the spring rate, it wasn't till A2 that the springs and upper casted seats changed. For the most part, any A0 can be brought up to A1 config quite easily...the resets pretty much did just that. New 6.5 motors are not MWO, it's just a new motor put in because the 6.2 was discontinued.
resets are just that, "reset" it give the truck a new lease on life by reaplcing and upgrading worn and outdated components and extends the useful life of the vehicle, plus it's cheaper then buying a new truck.
back in the 80's we had "SLEPS" service life extension programs performed on all our deuces and M151's....only to s**t can them some months later. Heck, we had a team come to my MP unit and equip all the jeeps with ROPS, running or not, the contractors weren't gone a few months and we started getting HMMWV's.
what a waste...

 

[86humv]

I think the A1's have the progressive rear springs with the cast spring perches, which gives them the higher payload.

I have an A2 12k chassis, and it has the standard stamped steel rear spring mounts.

 

[DatGuyC]

I've just been looking at the m998A1's that have gone through gov planet and they all seem to have the cast spring mount with the progressive springs. Figured that's when they upgraded them.