MX5800 oil seal removal

[anyan1]

I would really appreciate it if someone could tell me how to remove the oil seal (item 100) from the Front Gear Case (item 60). It appears the seal is held in place by a metal ring that is driven/hammered in on top of it. How in the world do you remove the metal ring to get the seal out???
Thanks for your help.

 

[TerryKing]

Hi,
Most seals like that have a metal outer case and a resilient inner seal element. That is one unit, replaced together. Often a "hook" shaped tool is used to reach thru the resilient seal parts and grab the outer ring and pull the whole unit out. Often need to coax it a little from around the circle. Or a sheet metal screw is screwed into the seal or the metal ring to pull it out.

The replacement seal with its metal ring is pushed into place evenly with a flat board etc and a hammer.

See this.

And youtube of course::

A cross section:

 

[lugbolt]

060 is the housing itself. Do you mean 100, which I call the "kingpin seal"?

 

[anyan1]

Thanks, Terry. I'll give the screw method a try. That would be a slick solution if it works.

BTW- the older version of this seal was two pieces. The new version is one piece. Not sure which I have...yet.

Appreciate your help!

 

[anyan1]

060 is the housing itself. Do you mean 100, which I call the "kingpin seal"?

Yes... Item 60 is the front gear case. Items 130,120,110, and finally the oil seal (item 100) are loaded into it. Then the Bevel Gear Case (Fig. No. F145xx) is pushed into all these items and Snap Ring 140 is installed on the shaft.
The Oil Seal has to be removed from the Front Gear Case before removing items 110,120 and 130. That's the point I'm stuck on. Sorry if I wasn't clear.

 

[whitetiger]

Yes... Item 60 is the front gear case. Items 130,120,110, and finally the oil seal (item 100) are loaded into it. Then the Bevel Gear Case (Fig. No. F145xx) is pushed into all these items and Snap Ring 140 is installed on the shaft.
The Oil Seal has to be removed from the Front Gear Case before removing items 110,120 and 130. That's the point I'm stuck on. Sorry if I wasn't clear.

The seal is a cassette-style seal, a seal inside another seal. The metal you are seeing is the protective shroud for the seal.
I remove them by driving a square pry bar under the seal from inside the seal and turning the bar that pops out the seal using an adjustable wrench

There will also be a sleeve on the case from which you removed it. It will need to be removed before reassembling the assembly.

This is the style of prybar I use.

https://www.amazon.com/DURATECH-3-P...d=1729043103&sprefix=pry+bar,aps,2186&sr=8-42

 

[TerryKing]

This is the style of prybar I use.

Tiger, those bars are SO useful in so many places..

The hard one is where there is a shaft in place and you really don't want to pull the engine all apart..

Years ago I saw THIS kind of seal puller used in the machine shop I used for boring cylinders, grinding cranks etc. They had ALL the specialty tools. When you have to pull a seal when a shaft is sticking out this is the pro way.

60 years later now, they're on AMAZON here

 

[D2Cat]

Kind of nice to come to a forum for a specific problem and get the doctor to detail how to do the surgery! When Whitetiger says something, I listen!!!

 

[anyan1]

Thanks for all your help. I finally removed the seal, but what a hassle.
Tried the screw idea first but the seal wouldn't budge.
Tried the pry bar but couldn't get the pry bar between the oil seal and the bearing that was pressed against it.
Finally decided to run the screws through the seal and against the top of the bearing (have to replace it anyway due to metal contamination) in order to "jack" the metal top of the oil seal up (see photo). This gave me enough space to get the pry bar in and lever the top half of the seal out.
Lower half of the seal was stuck tight so I turned the housing over and used a metal bar and hammer on the bearing to drive out the bearing and the remaining part of the seal. No damage to the housing.

Question - This is the second time a bearing has broken in the front hub. The other side self-destructed previously in a catastrophic manner. This is a 2016 with 1000 hours of gentleman ranch work on it. Is this a common failure or am I just lucky?

Thanks again for the great ideas!

 

[whitetiger]

Years ago I saw THIS kind of seal puller used in the machine shop

I actually have one of those.