Front Main Seal Project Prep Post - JeepForum.com
 
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post #1 of 4 Old 10-16-2020, 10:25 AM Thread Starter
waltonwj
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1980 CJ5 
 
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Front Main Seal Project Prep Post

Time for the next project! I have a buddy coming in next week to help me stop the oil leak I’ve got on the front of my 258ci.

I have a puller, and am about to order the front main crankshaft seal and new belts. I also see that there’s a gasket on the timing cover.

Before I place my porder, is there anything else that’s good to replace on the front of the engine while we’re in there? Needed parts/tools?

Thanks!

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post #2 of 4 Old 10-16-2020, 11:04 AM
Fourtrail
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1974 CJ6 
 
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Check the slack in your timing chain. If there is excessive and you are going to have the timing cover off, might as well replace it.

80 CJ-5, 74 CJ-6, 56 CJ-5
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post #3 of 4 Old 10-16-2020, 04:06 PM
oldschool74cj5
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hello

also really look at your harmonic balancer and see how worn and dry rotted it is. you probably have a large ring worn in from the seal. the new seal will work for a short time but start leaking again. they make a repair seal that comes with a thin sleeve that you can press on the harmonic balancer to give a new surface or just change the harmonic at the same time as the seal.

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post #4 of 4 Old 10-18-2020, 08:10 PM
JEEPFELLER
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1977 CJ5 
 
Join Date: Dec 2015
Location: GREENWOOD
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Garage
Some stuff they discussed

Never pull on the outside of the harmonic balancer!

I removed my grill and radiator which made things a bunch EZer.

My mission was to install a new timing set, my chain was scraping the inside of my timing cover.

I went with a Cloyes true roller set.
Attached Thumbnails
MR. JEEP TIMING SET 100.jpg   MR. JEEP TIMING SET 113.jpg   MR. JEEP TIMING SET 112.jpg   MR. JEEP TIMING SET 111.jpg   MR. JEEP TIMING SET 139.jpg  

MR. JEEP TIMING SET 147.jpg   BIGGER CROPPED OF 079.jpg  
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