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

Wiper motor...which is the correct one?
Lead additive, one more question.
M31C mount with or without replica weapon
Backfire and Hesitation
Wanted: Steering column and shaft for M38-1952, or late CJ2A
2024 CT. MILITARY VEHICLE SHOW AND FLEA MARKET- JUNE 15,2024
Brake Line
How to link full size photos in posts
Clutch release bearing support cast tab for return spring
T90 case replacement required?

Willys M Jeeps Forums


willysmjeeps.com :: View topic - 'A1 water pump and fuel pump replacements
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

'A1 water pump and fuel pump replacements

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


Joined: Mar 13, 2006
Posts: 1079
Location: Richburg, SC

PostPosted: Tue Nov 15, 2011 9:34 am    Post subject: 'A1 water pump and fuel pump replacements Reply with quote

I've found a few things reguarding my questions here, but not the exact yes/no answers I am looking for, so here goes.

I saw where Rickg bought a water pump (offshore) from Walcks and didn't have a great experience. I'm considering ordering one from Oreilly's (a Cardone, $33, lifetime warranty) and taking my original to compare it to the replacement (by taking measurements). The pulley is different I can tell by the picture on the website. Hopefully it measures out and the old pulley will fit the shaft, because with Christmas and tax time is coming - not much money for the toys right now. Here is the link to this pump:
http://www.oreillyauto.com/site/c/detail/A1C0/58409.oap?year=1955&make=Jeep&model=Willys&vi=1421143&ck=Search_water+pump_01398_1421143_1742&keyword=water+pump&pt=01398&ppt=C0331
Has anyone tried this pump and can share? Am I wasteing my time ordering and measuring for fitment problems? What about rebuild kits - are they worth messing with? I haven't taken my spare apart, so I don't know what shape it's in - will do that after lunch. This might be a possibility also.

I've also seen a couple of comments about the Airtex fuel pumps. Wes, you said the Airtex 4032 is the correct pump for the 'A1 - here is the link to it:
http://www.autozone.com/autozone/parts/Airtex-Master-Fuel-Pump/1955-Jeep-CJ5/_/N-j46dtZ8vcz2?counter=2&filterByKeyWord=fuel+pump&fromString=search&itemIdentifier=775718_200397_0_6219
But what about the Airtex 9562? It says it works on a 1955 CJ5. It costs about $20 less and has the threaded fuel and vacuum fittings. Is there a physical size problem with this pump that it won't fit with the front engine plate or something? Here is the link to it:
http://www.autozone.com/autozone/parts/Airtex-Master-Fuel-Pump/1955-Jeep-CJ5/_/N-j46dtZ8vcz2?counter=1&filterByKeyWord=fuel+pump&fromString=search&itemIdentifier=21712_200427_0_6219
Has anyone tried this pump?

I have my original military pump and am planning on getting it rebuilt or doing it myself (questions will be coming on that when that time comes), but I am just trying to get the 'A1 going right now and need something that works and will be used in case of an emergency.
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16225
Location: Wisconsin

PostPosted: Tue Nov 15, 2011 12:32 pm    Post subject: Reply with quote

Your best and least expensive choice in water pump issue is rebuilding your own. It must be done carefully step by step per the manual. Especially where the press is involved. I would not purchase any other pump that I would need to move my double pulley to unless I had the opportunity to measure the length and diameter of the exposed shaft on the new pump to compare to my old pump's shaft before I buy it.


Review your operating pressure requirement in the M38A1 operator's manual TM 9-8014. It calls for 4.5 to 5.0 PSI. I know the 4032 pump has the odd steel tubes for the vacuum ports but the pressure is correct. The 9562 you list has an output pressure range of 2.5 to 3.75 not nearly enough for your stock M38A1 system.
_________________
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
G740
Member


Joined: Jan 27, 2006
Posts: 498

PostPosted: Tue Nov 15, 2011 7:19 pm    Post subject: CAREFUL! Reply with quote

You need to be very careful if you are going to rebuild it yourself, or change your pulley to an O'Reilly pump. The new pump's shaft is slightly smaller than the original. That combined with the fact that the hub in the pulley gets stretched out a bit once you press it on, may leave you with a less than perfect interference fit when you go to re-install it. If you do not have the proper press fit, the pulley and fan will spin off and go launching thru your radiator. Radiator repair, if it can be, will run you 4-500 today for a new core. The cost of a new pump with a correctly installed original 2 groove pulley will seem very cheap then.
Just a heads up.
John
Back to top
View user's profile Send private message
wilfreeman
Member


Joined: Mar 13, 2006
Posts: 1079
Location: Richburg, SC

PostPosted: Tue Nov 15, 2011 7:36 pm    Post subject: Reply with quote

Good info guys! I started to pull my spare apart today, but remembered that there is a manual for it, so I thought I would read through it first. I don't have a problem doing stuff like that myself (actually love learning what makes stuff work), so I might try it. I thought about asking the Oreilly guy that if I order the pump and it doesn't measure out right I could get a refund - what can he say, NO? Then I would just order a rebuild kit or new/rebuilt pump. I had my radiator rebuilt 12 years ago for $80 and sold my spare for $130 delivered - what a big mistake! I'd hate to have to find one these days.

I did not read the fuel pressure for the 9562 fuel pump - thanks for catching that Wes - that's why I ask first. Cheaper is not always better!
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
wilfreeman
Member


Joined: Mar 13, 2006
Posts: 1079
Location: Richburg, SC

PostPosted: Tue Nov 15, 2011 9:15 pm    Post subject: Reply with quote

I just finished reading through the water pump rebuild instructions. It looks pretty straight forward. So what can you use to pull the impeller and pulley hub, will a regular 3 arm puller work? I have a press to reassemble it. What comes in the rebuild kit?
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 16225
Location: Wisconsin

PostPosted: Tue Nov 15, 2011 11:31 pm    Post subject: Reply with quote

If you use that "SEARCH" button at the top of the page and type in water pump you will be amazed at how many times this topic has been kicked around and how many years ago as well.
http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=search

John Gibbons offers a suggestion here:
http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=5658&highlight=water+pump

and

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=5642&highlight=water+pump

Here's a few others:
http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=4483&highlight=water+pump

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=4170&highlight=water+pump

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=4010&highlight=water+pump

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=3843&highlight=water+pump
_________________
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
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.