99 F250 7.3L Diesel Front Crank Seal
 

I have a decent sized oil leak coming out of my front crank seal. This was verified by a mechanics shop. Is this something I can change myself or should I have them do it? If so, how hard is it to do? Will I be able to find a written procedure for this somewhere? I appreciate any help. Thanks, Mike.

here you go https://www.motorcraftservice.com/pu...21/SXOMAIN.HTM

I see you have had the leak mechanic verified, but for your sake, make dang sure that's what is it. The HPOP is a much more common place to leak than the seal. Also, the CPS seal has been known to leak as well. Just make sure before you tear in to it.

What are the HPOP and CPS seals? And how do I check them? Thanks, Mike.

Thanks rbaker!!

This guide lists quite a few specialty tools to do this job. Which of these tools are actually required? I realize the puller is required, but besides that can I do the job with normal tools? Thanks, Mike.

The HPOP is the High Pressure Oil Pump. That silver retangle thing that sits on the top front of the engine is the resevior for it. It has several seals that can leak. Look around under it and make sure it's not coming from there. The CPS is a sensor mounted on the front of the engine near the water pump. Locate and follow the only wire on the front bottom side of the engine. Have a look HERE for better location.

Been there, done that. If you can get the harmonic balancer off, you can change the seal.

This link no longer works. Does anybody know of another place that has service manuals for my truck?

Thanks,

Mike

I'm familiar with the O-rings going bad on the backside of the pump, but are there seals/rings on the bottom? I just did a thorough cleaning of my engine so I have to wait until I drive it some more to find a fresh leak. But while I was cleaning it I noticed a ton of buildup behind the balancer. I was convinced it was an HPOP issue but now I'm not sure. I didn't think front seals were known for going bad on the 7.3's which is causing my confusion because all indication shows it's a seal but every search I do comes up HPOP issues.