Accessory drive seal leaking bad on cummins engine in M818

[ida34]

When I got my M818 truck the paperwork said it needed a new oil seal on the front of the accessory drive. I confirmed this when I changed the front driver's fender. My new fender and paint job got a great anti rust covering of engine oil during my recent trailer pickup. I need to get it fixed before driving it anywhere else. I looked in the manual and it shows I have to remover the radiator to get access. Anyone done this seal before? Do I really need to take out the radiator? I plan to get the seal from the local cummins dealer. Do I need any special tools? Cummins specialist please speak up.

Thanks
Chuck

 

[Gamagoat1]

RE: Accessory drive seal leaking bad on cummins engine in M8

Not according to the manual. It lists using a puller to remove the pulley giving access to the seal and oil slinger. Do not turn the engine while the pulley is off. when you reassemble tourque to 270 to 340 lbs./ft.

Refer tp Tm9-2320-260-34-1 page 3-18.(available here on this site)

 

[ida34]

RE: Accessory drive seal leaking bad on cummins engine in M8

Well, I got the "seal" from cummins today in the mail. It is marked as a seal on the paperwork and the zip lock bag it is in but what I have is a thick metal washer. No rubber for a seal at all. It looks galvanized. Not brass or any other soft metal. I will have to call them tomorrow to get the proper seal.

Chuck

 

[WillWagner]

RE: Accessory drive seal leaking bad on cummins engine in M8

There will be a seal and a flat, rubber coated washer. The seal is pushed into the front cover, and the "washer", or the slinger will go between the gear and the end of the pulley, creating the seal between the shaft/gear and the pulley. Here, a pic, hope it helps. As for tools. A regular t-bar puller to pull the pulley off, and a special installer to install it. For anyone interested, I think I have two extra installers. $35 with shipping, and it is yours.

 

[Recovry4x4]

RE: Accessory drive seal leaking bad on cummins engine in M8

Will, it's great to have an expert Cummins tech at our disposal. Thanks for being here for everyone.

 

[ida34]

RE: Accessory drive seal leaking bad on cummins engine in M8

Wil,
The seal I am talking about is the one that goes in the front cover where the belt pulley attaches to the front of the shaft. What I need is number 16 on this page.

 

[WillWagner]

RE: Accessory drive seal leaking bad on cummins engine in M8

There is an installer for the seal, but you can just use a ball peen. Push it in 'till the outside face of the sael is flush with the housing. Make sure you install the new slinger and the sleeve on the pulley...#70 in the last post...sorry, gotta learn to read instead of just looking at pics.

 

[ida34]

RE: Accessory drive seal leaking bad on cummins engine in M8

Will,
This is what I got. Is this the slinger you are talking about or did they just send me the total wrong part?

Thanks
Chuck

 

[ida34]

RE: Accessory drive seal leaking bad on cummins engine in M8

I plan to take the old seal out and take it in. I tried to do the easy thing and order it over the phone. At first he quoted me $900. I told him that was a little steep for a seal. He then said he was quoting me a price on an accessory drive instead of the accessory drive seal.

 

[WillWagner]

RE: Accessory drive seal leaking bad on cummins engine in M8

Hold off, i'll get some P/N's for you. I also took some pics to share. I'll post up tonite.

 

[supermechanic]

i replaced my seal some time back, i took out the radiator .
seal went in no problem, no leaks since.
not a hard job.
no idea what that thick washer is for.

 

[supermechanic]

hi again, i relpaced the bushing behind the seal as well.
accessory drive wil have a small amount of play, this is normal.
if yours shakes back and forth an eighth inch or so, put in the new bushing.

 

[timntrucks]

on a truck i am building up a 818 i am missing the pulley where the belts go. i have another one on a bad engine. you talked about not turning engine while pulling seal out. what kind of trouble am i going to have putting a new pulley on engine. it has a new seal that is already installed at the army rebuild . this is on a brand new engine .. i thank anyone that has some advice for me TIm

 

[WillWagner]

It doesn't matter if the engine turns while the seal is out or being pulled out. It is only a seal, nothing to do with timing. But, if the complese accessory drive is out, not a good idea to turn the engine, only for the tune up procedure.The seal is in the cover. You can't remove a seal from one engine and put it in another, it get ruined when it's removed.

 

[ida34]

Thanks Will. I really want to be able to pull it apart and put it together without having to go to the Cummins place in between. I may try to go tomorrow morning.

Thanks
Chuck

 

[ida34]

In the diagram above the part number is listed as 211255. My invoice says 211255 and lists it as a seal. The zip lock bag has 211255 on it also. I really think they had the wrong part in the bag on accident.

Will,
Just to be sure, you say I need 60 and 70 from your diagram in addition to 16 on my diagram? If you can help me out with the part numbers before tomorrow morning I would appreciate it.

Thanks
Chuck

 

[WillWagner]

Chuck,
Here's some P/N's for the seal, slinger..it is called a seal too in QSOL and BMS...and the wear sleeve.
Seal...3004316.
Slinger..3200287.
Wear Sleeve...190397.

Here are some pics of how to change the wear sleeve, sorry they are blurry.

 

[WillWagner]

Re: RE: Accessory drive seal leaking bad on cummins engine i

Will, it's great to have an expert Cummins tech at our disposal. Thanks for being here for everyone.

Kenny, thanks for the kind words, I Am by no means an expert. I am just a cranky old jackass that has been around a bit. These pigs teach me a lesson every day. WooHoo, 9 more years, I can retire!

 

[steelsoldiers]

RE: Re: RE: Accessory drive seal leaking bad on cummins engi

Will, you are awesome. Great pics and instructions. This looks like another good sticky for the 5-ton forum!

 

[ida34]

RE: Re: RE: Accessory drive seal leaking bad on cummins engi

Will,
I have decided to do the crankshaft front seal also. Does it also have the sleeve like the belt pulley on the accessory shaft? The diagrams leave a little to be desired. I would also like to get one of your installers from you PM me with info for payment. I would like to paypal to move things along faster. At any rate let me know. I will pm a copy of this post.

Thanks
Chuck