Create an account Home  ·  ·  Forums  ·  ·  Articles  ·  ·  Downloads  ·  ·  Photo Gallery  
Login
Nickname

Password

Don't have an account yet? You can create one here.

Navigation
· Home
· Article Archive
· Article Submit
· Downloads
· FAQ
· Forums
· Members List
· Photo Gallery
· Private Messages
· Web Links
· Your Account

Search Articles



Forums

M38-YS637S Carb question
RT-70 & other radios... Stencilling
Willys Service Bulletins 1945-1951
P.C.V Baffle
Rubber washers on F134 valve cover by
Adding pictures to post
Early M38 light switch resistor value
Painting the Block
Fitting exhaust Manifold
M38 no start condition

Willys M Jeeps Forums


willysmjeeps.com :: View topic - Oil Pump Replacement
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Oil Pump Replacement

 
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base
View previous topic :: View next topic  
Author Message
Scott21
Member


Joined: Apr 12, 2007
Posts: 232
Location: Central New Jersey

PostPosted: Sun Sep 06, 2009 4:11 pm    Post subject: Oil Pump Replacement Reply with quote

It looks simple on my 52. Any tricks to it?

Scott
Back to top
View user's profile Send private message
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16286
Location: Wisconsin

PostPosted: Sun Sep 06, 2009 8:53 pm    Post subject: Reply with quote

Just follow the steps in the book, remember it drives your distributor, and prime it.
_________________
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.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
Back to top
View user's profile Send private message Send e-mail Visit poster's website
skyjeep50
Member


Joined: Feb 20, 2007
Posts: 606
Location: Illinois

PostPosted: Mon Sep 07, 2009 7:48 am    Post subject: Oil pump Reply with quote

I removed the oil pump from my M38A1 to check for blockage. Had a devil of a time getting it back in. When inserted the gears tend to turn the oil pump shaft slightly misaligning the keyway that drives the distributor. You can use a mirror to line things up before inserting the pump shaft but I just couldn't keep the alignment from changing. Got frustrated, left it for a couple of days, went back and tried again, blew it again and left it a couple more days, etc. Called a mechancally minded friend and he tried with the same results but finally he got it to click into place after about 45 min of fiddling. If the pump did not have to be primed it would be simple to take off the pump cover and rotate the gears to align the shaft. Anyone got a tip to prevent the shaft from turning??
_________________
1951 M38
Back to top
View user's profile Send private message
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16286
Location: Wisconsin

PostPosted: Mon Sep 07, 2009 8:26 am    Post subject: Reply with quote

When you are trying to engage two helical cut gears you cannot push it straight in. You must rotate the shaft backwards a bit to lead the engagement of the gears so as it is forced to turn forward it will end up where you want it. If you leave the distributor firmly bolted down it will make all of this twice as hard. The engine manual explains in great detail how to properly position the oil pump with the distributor remove so the distributor will be correctly oriented when you install it.
_________________
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.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
Back to top
View user's profile Send private message Send e-mail Visit poster's website
skyjeep50
Member


Joined: Feb 20, 2007
Posts: 606
Location: Illinois

PostPosted: Mon Sep 07, 2009 6:58 pm    Post subject: Oil pump Reply with quote

That was definately the problem. We tried to lead the pump shaft but to get it to engage, we found you have to be right on. I didn't want to loosen the distributor for fear of loosing the right position and messing up the timing. I suppose marking the position would help get the distributor lined up again. Live and learn!
Thanks Wes!
_________________
1951 M38
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001 phpBB Group
Forums ©

 



PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.