No pilot bearing in crankshaft

Discussion topics on Willys Overland M series vehicles

Moderators: TomM, Moderator, wesk

Post Reply
User avatar
cross
Member
Posts: 21
Joined: Wed Dec 08, 2010 6:00 pm
Location: Orange County, Calif

No pilot bearing in crankshaft

Post by cross »

Ive got an M38 with what I think is original engine although it has been rebuilt by PO according to receipts I got with jeep. Have some clutch issues so I tore down and found there is no place for a pilot bearing in the crankshaft. Instead there is a 1" dia hole which tapers to a .680" bore at about .3" in from face. This not an old worn bearing but is actually machined into crankshaft. The .680 hole is too big and would allow transmission shaft to wobble. Has anyone seen this. Any possible solutions. I really dont want to put it back together this way. BTW the clutch engaged fine with no chatter or shudder prior to tear down but did make a ticking sound only on acceleration with clutch fully engaged. Sound was related to engine RPM and definitely came from inspection cover area. I tore it down to find source of ticking and discovered the lack of a pilot bearing. I have pictures but cant figure how to post them here. Will do so on 503
thanks
52 M38
User avatar
Bretto
Member
Posts: 1390
Joined: Tue Nov 23, 2010 6:00 pm
Location: Orem, UT

Post by Bretto »

There should be a bronze bushing in the flywheel for the trans shaft, not in the crank. If not, thats a horrible oversight by prev builder.
Image
Last edited by Bretto on Fri Feb 03, 2012 12:43 pm, edited 1 time in total.
User avatar
wesk
Site Administrator
Site Administrator
Posts: 16413
Joined: Sun Apr 03, 2005 6:00 pm
Location: Wisconsin
Contact:

Post by wesk »

Before you shoot the previous builder make sure the current owner saw or did not see the pilot bushing in the flywheel. He is describing only the back end of the crank he is looking at. This leads me to believe he has the engine out and no flywheel on it.

He will very shortly figure out that the bushing goes in the flywheel and not the crankshaft! :wink:
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules. ... _album.php
User avatar
Bretto
Member
Posts: 1390
Joined: Tue Nov 23, 2010 6:00 pm
Location: Orem, UT

Post by Bretto »

Ya Wes, you are correct, I saw my wording and updated my post as you posted yours.
User avatar
cross
Member
Posts: 21
Joined: Wed Dec 08, 2010 6:00 pm
Location: Orange County, Calif

I'm an idiot

Post by cross »

Thanks guys, I'm a complete goofball and spaced out on this. Ive only replaced about 10 of these.
52 M38
Post Reply