F134 oil filter question....HELP!!! - JeepForum.com
LinkBack Thread Tools
post #1 of 4 Old 07-26-2013, 07:17 PM Thread Starter
Registered User
1956 CJ6 
Join Date: Feb 2013
Location: littleton
Posts: 5
F134 oil filter question....HELP!!!

I just finished a rebuild of my '56 f134. Engine has external canister oil filter. Inlet oil hose comes from under fuel pump to top of oil canister. Lower hose connects bottom of canister to top of timing cover . The problem I have is the oil filter canister is not draining through lower hose. Pulled housing apart and cleaned. Does not appear to be drain holes inside of housing... How the hell does this work??? With lid hold down bolt and lower hose removed, it's a through passage. Plug one end and blow, nothing. Am I overlooking something? Help

Attached Images
jeepthing5280 is offline  
Sponsored Links
post #2 of 4 Old 07-27-2013, 07:11 PM
Registered User
1974 CJ6 
Join Date: Dec 2007
Location: Illinois
Posts: 1,983
There are no drain holes inside of the canister. It will not 'drain' the oil out. The hold down bolt should be hollow with a few holes in it at the top end. Oil comes in through the filter, through the hold down bolt, down the center tube and back into the motor.

80 CJ-5, 74 CJ-6, 56 CJ-5
Fourtrail is offline  
post #3 of 4 Old 07-28-2013, 08:37 AM
Registered User
jeepdaddy2000's Avatar
1971 CJ5 
Join Date: Jan 2002
Location: Eagle Point
Posts: 7,399
Oil is pushed into the canister from the galley, pressurizing the canister. This forces the oil through the filter and out the hollow lid bolt to drain over the timing gears.
You should be able to remove the lower hose, and with the engine running, get oil out from the bottom hose (once the canister is full). If you don't, you need to inspect the inlet line for blockage, the bolt to insure it is clear, and the outlet hoes to make sure it hasn't collapsed or gone bad.
Remember, this is a bypass system, it only cleans a small amount of oil at any time, unlike modern systems that force all oil through the filter before it reaches the galleys.
jeepdaddy2000 is offline  
post #4 of 4 Old 07-28-2013, 09:42 AM
Registered User
1997 TJ Wrangler 
Join Date: Jul 2008
Location: Waynesboro, Virginia
Posts: 1,318
Oil is sucked out of the #2 main bearing if I recall correctly. Every one of the L and F head engines I have rebuilt have more wear on #2 main. The engines oiling system is self contained. The filter though it does help some, actually does very little in the way of removing contaminates from the oil. Now if you plumbed all the ports in a series to the filter much greater filtering will be achieved, at the cost of oil pressure, unless a higher pressure oil pump was installed.

A Jeeper for life
Lifesgoodhere is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome