HMMWV Half Shafts

dodgemain · Oct 2, 2015

Hi,
Looking for a set of rear half shafts for my newly aquired M998. I see a few people selling them on eBay. Is one brand better than another or are they all the same? Where is the best place to buy them? Below are a few pictures of my truck. Former USMC/Navy Seabees. Wish they didn't paint over the logo. Thanks in advance for any help or comments.
Chris

emmado22 · Oct 2, 2015

Whats the matter with the half shafts that are on there now?

dodgemain · Oct 2, 2015

The boots are either thorn up or missing. Each half shaft has a missing boot. Looks like a lot of rust and dirt in the joints. Can they be rebuilt? Thanks

emmado22 · Oct 2, 2015

yes, easy to rebuild.

tage · Oct 2, 2015

If you go new, they could be had for 500 or so for a complete set. You have 10k units, and the rear pair are the same.

country · Oct 2, 2015

we can help with all your HMMWV needs
please give bill in our office a call directly at
215-332-0500 or email him at bill@easternsurplus.net

thanks
dave
www.easternsurplus.net

Retiredwarhorses · Oct 2, 2015

The 500.00 for a set are Chinese.....they are ok for the money. But look for NOS if you want correct ones.
the NOS are CARC black....the Chinese are blued and rust instantly on the outside...so paint them.
there are 3 you will need...left front, right front and 2 of the same for the rear. The front left is the short, the right front is the longest, the rear are same length.
i don't rebuid them...not worth my time...but that's me.

gcbennet · Oct 2, 2015

My boots were all torn to crap so I pulled mine apart and thoroughly cleaned in my parts washer. Upon thorough inspection I found they were still good to go with no corrosion or visible wear. So I spent all of about $15 on a set of new boots per side. It's time consuming but not difficult. Definitely cost effective though.

Dr Zoidberg MD · Oct 3, 2015

Purchased a NOS rear axle on eb a y yesterday for $134 shipped.

KansasBobcat · Oct 6, 2015

I tried to get my half shafts rebuilt at a local axle shop but once I said HMMWV, they did not want to mess with them! You could still check as all the parts are available.

GMVguy · Oct 7, 2015

Correct me if I'm wrong, but I understand the part numbers for the compatible A2 halfshafts are:
RCSK17028-1 (Rear)
RCSK17028-2 (Right Front)
RCSK17028-3 (Left Front)

Dr Zoidberg MD · Oct 7, 2015

mlacek said:
Correct me if I'm wrong, but I understand the part numbers for the compatible A2 halfshafts are:
RCSK17028-1 (Rear)
RCSK17028-2 (Right Front)
RCSK17028-3 (Left Front)

I can't verify the front without looking in the TM, but that rear axle number is correct. I bought a NOS rear axle off ebay and got boots and bands to rebuild the one I am pulling.

dodgemain · Oct 9, 2015

Hi,
Ended up buying a couple NOS halfshafts off eBay. I am going to start installing them tomorrow. Read through the TM manual and seems pretty straight forward. Anything I should watchout for? Also, how do you safely jack up a HMMWV? What is the correct jackstand placement?
Thanks

emmado22 · Oct 9, 2015

Use locktite on the half shaft bolts....

KansasBobcat · Oct 9, 2015

I used new bolts and Nordlock washers on flange with Loctite. Also when installing fastener on shaft end in geared hub DO NOT drop the lock washer in the hub. It was a chore to get it out! Good luck.

Retiredwarhorses · Oct 9, 2015

FOr anyone doing this..fyi, the military does not use nord locks, they are used on the civ trucks. No harm no foul.
also, the bolts are metric...not inch. The head is not what a normal American metric head is..so you have to order them from a vendor,who sells them for a Hummer H1.
factory AMG bolts have a pre-applied thead locker on them....on the end bolts, use #8 grade bolts and lock washer as well as locktite. A broken lock washer will destroy the bearing basket....will work fine till you remove the upper spit hear and all the roller bearing fall all over the place.

KansasBobcat · Oct 9, 2015

Retiredwarhorses said:
FOr anyone doing this..fyi, the military does not use nord locks, they are used on the civ trucks. No harm no foul.
also, the bolts are metric...not inch. The head is not what a normal American metric head is..so you have to order them from a vendor,who sells them for a Hummer H1.
factory AMG bolts have a pre-applied thead locker on them....on the end bolts, use #8 grade bolts and lock washer as well as locktite. A broken lock washer will destroy the bearing basket....will work fine till you remove the upper spit hear and all the roller bearing fall all over the place.

Thank you for this information. I learned the hard way about the bolt heads. Ended up getting them from AMG dealer who said I needed to upgrade to Nordlocks. Getting the lock washer out of the hub was stressfull!

ClarkeF · Oct 10, 2015

emmado22 said:
Use locktite on the half shaft bolts....

Specifically Red 272 Loctite, not the standard Red 271 - you want the high temp Loctite to go with your fresh nordlock washers. That halfshaft flange gets darn hot because it is bolted to the brake rotors.

Predator42 · Oct 12, 2015

How often should the half shaft boots fail? I know there are 8 of them, I am on my second replacement within 3 months. My guess is it is just because all of them are probably several years old and have sat for most of that time. I am replacing them as they fail. The lower boots nearest the wheels seem to fail first. All of mine must have been pretty old. I would be willing to bet some of you can change these things out in 15 minutes or less where it takes me a few hours.

gcbennet · Oct 12, 2015

It's a time consuming and messy job at the best of times. I've done both of my rear shafts and each one took me well over an hour or so each. Once you figure out how to pull them apart it gets easier, but they should be torn down and cleaned thoroughly regardless in order to check for any wear, damage, and/or corrosion, and to re-apply lots of fresh grease.

HMMWV Half Shafts

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