Installing new crank pulley |
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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Posted: 05 Feb. 2023 at 8:08pm |
Fellas, how difficult should it be to install a crank pulley? I just went through the process of stripping down the front of the motor to replace my front timing seal, gasket plus rear main seal and pan gasket.
I was able to get the pulley onto the key but had to wollap it a few times to get threads to show, then used the nut to get it on the rest of the way. If this sounds bad, I’d rather hear now than having something go wrong after the reassembly process. I don’t want to find out after the fact that I boogered up the (new) seal in the process. This was a new pulley and I had to use a jaw puller to get the old one off. When I was struggling, I tried the old one and it had similar resistance. |
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Lee MN
Member Joined: 13 Aug. 2008 Location: Harris, MN Status: Offline Points: 4953 |
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You should be ok, where did you source the new pulley ?, I’ve ordered from 3 different places and all 3 were not made correctly and rubbed on the timing cover.
Lee |
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LEE
44 GPW-The Perfected Willys 49 2A “If you wait, you only get older” 67 M715 American Made Rolling History |
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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This was from army jeep parts….USA made double groove for M38
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bight
Member Sponsor Member x 2 Joined: 20 Aug. 2020 Location: mid coast maine Status: Offline Points: 1689 |
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sorry i cannot help with the primary issue. but just in case of future need, wollap is spelt wallop
i love the use of that word. makes ya laugh.
Edited by bight - 06 Feb. 2023 at 6:38am |
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CJ-2A 72586 tan (stock)
CJ-2A 197624 green (resto-mod) the wife abides (def: to bear patiently; TOLERATE) |
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Tom in RI
Member Joined: 07 May 2009 Location: RI Status: Offline Points: 1126 |
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The resistance doesnt sound out of ordinary unless you had to wack it hard. A light skim of grease on the crankshaft, and outer pully hub where it meets the seal will ease the installation. Some leave the timing chain cover loose as the pully is installed to help keep the pully centered in the seal.
Also, there shouldnt be any paint on the hub where it rides the seal.
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Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4919 |
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I have gotten them with paint, or rust in the bore. When I get one that is a little tight, a quick polish with a brake hone and oil does wonders.
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If you can't get there in a Jeep you don't need to be there!
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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I had to whack it pretty hard. I used a dead blow hammer onto a piece of 3" PVC conduit. Once threads were showing, the impact pushed it back pretty easily.
Had I been on my top game, I would have test-fit the pulley before putting the timing cover on. I'll take a look at things this evening and decide if its prudent to remove the timing cover, scrape off the gasket sealer and put on a new gasket. Fingers crossed it all looks OK. The end game here is to stop leaks, and I'll be darned if I wouldnt' be mad to put it all back together to find that I boogered up my new timing seal. |
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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Old pappy, the surface was clean on the pulley where it meets the seal. I'll upload a photo from my phone of the crank/threads. They admittedly look a bit painted/not-smooth.
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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dasvis
Member Sponsor Member Joined: 07 Sep. 2019 Location: Salem, Oregon Status: Offline Points: 1550 |
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If you heat the crank gear it will go on easier.....
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1947 CJ2A #88659 "Rat Patrol"
1953 CJ3A #453-GB1 11266 "Black Beauty" 1964 Thunderbird convertible ..... & one of them moves under it's own power!! |
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vtsteve
Member Joined: 24 Oct. 2018 Location: VA Status: Offline Points: 190 |
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UPDATE….
I took the pulley back off tonight with a 2 jaw puller. It’s a beast of a pulley, way stouter than the stock one. The timing seal is just fine. I attempted to measure how centered the cover /seal is by sticking my finger in and using a feeler gauge to determine the gap difference when pushing my finger against against the slinger relative to the edge of my fingernail. Non scientific but it’s probably 0.005 to 0.007” out of center. I can’t see the seal being that sensitive….I waited to crank the timing cover tight yesterday until after cranking down the nut. I also cleaned the crank tip behind the threads and the inside of the new pulley and it went back on much easier All is well….. |
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