International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Tech

Thread Tools Search this Thread Display Modes
Old 12-08-2010, 02:53 PM
dakatl's Avatar
dakatl dakatl is offline
Join Date: Aug 31, 2009
Location: Auburn, GA
Posts: 61
CS144 pulley removal - tapered collar type

CS144 pulley removal - tapered collar type

While undergoing an upgrade of the inferior stock GW alternator to a CS144, I came across one that had the pulley affixed by means of a tapered collar. Others have come across this type of pulley assembly as well and it is not clear as to what years/models they are found on. This donor came from a 94 Cadillac Deville 4.9L and was a recently remanufactured 2007 unit so I acquired it for this project.

In preparation for this project apply a penetrating lubricant such as PB blaster to the pulley nut/shaft the day before. Safety first, always wear proper safety gear and always follow safety guidelines and procedures.

To remove the nut, the use of a 15/16 socket and impact wrench will make quick work of it. Secure the pulley in vice or by hand and remove nut with impact wrench. The nut should easily break loose assuming it or the threaded rotor shaft has not been damaged or severely rusted. Remove nut and lock washer. On some later CS144 alternators placed in GM vehicles the pulley is ‘pressed’ to the shaft by means of a ‘tapered collar’ in the center. The removal of this type of pulley has been the cause of many a bloodied knuckle leading to drastic and sometimes excessively creative countermeasures that often end in disappointment.

[nut and lock washer removed, view of the tapered collar in center.]

You do not want to use a puller with this pulley type, the reason being is that the more outward pressure you apply to the pulley the more you are actually tightening the pulley to the tapered collar and hence pressing the collar to the shaft even tighter. Using a puller will end in destroying the pulley and most likely the rotor shaft as well. Fear not however, there is an easy solution.

[diagram of pulley assembly]

To remove the pulley, strange though it may seem, you need to push it down towards the fan. It needs only a few thousandths of an inch of movement to release the tension pressure on the tapered collar. This can be achieved with a piece of pipe or a socket. I found that a 1 -1/16 socket works quite well. Secure the alternator then insert a pipe or socket inside the pulley making sure that it does not press on the tapered collar but just on the pulley itself and then strike firmly and squarely. Once the tension is released on the tapered collar the pulley should come loose. A gentle tap on the side of the pulley may also be needed. Once off replace with your pulley of choice. Late model stock FSJ pulleys should have same bore dimensions.

[1-1/16 socket inserted and ready for a smackin]

[diagram of pulley assembly]

'89 GW, 360/727/208 ,WT 44/20,Trac-Lok,TFI,CS144, Warn XD9000i, Rusty's 4"+1" BL, 33x12.50 on 15x8 .
Reply With Quote
Old 12-08-2010, 03:08 PM
Elliott's Avatar
Elliott Elliott is offline
Cowboy Up
Join Date: Jun 22, 2002
Location: Pilot Point, TX
Posts: 12,704
Thank you sir!
*** I am collecting pics and info on any factory Jeep Dually trucks from the J-Series at the new Jeep Dually Registry.
***I can set you up with hydroboost for your brakes:
Reply With Quote
Old 12-08-2010, 05:30 PM
ThisGuyUKnow's Avatar
ThisGuyUKnow ThisGuyUKnow is offline
350 Buick
Join Date: Mar 25, 2008
Location: Macomb,Il
Posts: 1,460
or take it to a local alty shop and ask them to remove it
Wish you had made this thread back when I took the cs144 plunge.
'85 CJ7 Laredo- Rebuilt 360, Tuned Port Injection, T-176, D300, W/T 3.31 w/Trac Loc, 31x10.5x15 BFGs
Reply With Quote
Old 12-12-2010, 02:37 AM
Skeeter74 Skeeter74 is offline
Grease Monkey
Join Date: Sep 25, 2009
Location: Joplin, MO
Posts: 435
Thought about posting this myself. I gave it a couple of whacks with a heavy rubber mallet, then used a puller. Nice and easy.
Originally Posted by Tatsadasayago
"And on the 7th day god created the Full Sized Jeep and he saw that it was good. He gave these mechanical marvels to his chosen ones and they went wheeling in style and comfort!"

80 Wagoneer Limited, 2 bbl 2150, 360, 727TF, NP219, "Moby Dick" Now with Dragonfire HEI, Contour dual fans, CS144,
Reply With Quote
Old 12-12-2010, 06:34 AM
The PIG Smith's Avatar
The PIG Smith The PIG Smith is offline
King Browless
Join Date: Nov 30, 2001
Location: Fort Wayne, Indiana
Posts: 6,534
Originally Posted by ThisGuyUKnow
or take it to a local alty shop and ask them to remove it
Wish you had made this thread back when I took the cs144 plunge.
Same here.
I will not tell all the embarrassing things I tried, as I had no idea what I was up against.
I do have a nice set of multi-jaw pullers now that would not have otherwise.

...then I was told about this tapered collar...I am like...OH NICE...NOW they tell me!
I made a trip to my local auto electric shop and they took it off for free.
Bryan Smith
2005 Grand Cherokee Limited - HEMI! Current Daily Driver
1982 J10: Stalled Project.
1981 J20: Commercial flat bed. Lost in Divorce
1987 J20 Pioneer: Former 'Ricbee' plow rig. RUST!!

Originally Posted by Jayrodoh
...but if it works, I wouldn't touch it.
Originally Posted by Lindel
Best laid plans, yada yada yada...
Reply With Quote
Old 12-12-2010, 06:50 PM
jaber's Avatar
jaber jaber is offline
Dragin Az
Join Date: Oct 17, 2003
Location: Chino Valley, Arizona
Posts: 8,071
Thank you...

46 cj2a

51 Willys p/u
'51 Willys Parkway Conversion
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service bed
'77 J-10 p/u
'79 Cherokee
'88 Grand Wagoneer
Reply With Quote
Old 12-13-2010, 05:46 AM
sappy76's Avatar
sappy76 sappy76 is offline
Grease Monkey
Join Date: Dec 26, 2007
Location: Kalamazoo, MI
Posts: 512
Timely post. I just swapped it over last night. Without this tidbit I would have been wasting a lot of time and probably trashing the alternator.

Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
power steering pump pulley removal question jeepjseries General FSJ Tech 13 09-15-2015 01:47 PM
CS144 Pulley Removal 1977Waggy General FSJ Tech 6 08-28-2009 05:15 PM
Power steering pump pulley removal ???? badaboom General FSJ Tech 6 06-27-2007 07:49 AM
PS Pump Pulley Removal Al Johnson General FSJ Tech 2 05-27-2003 02:21 PM
Power Steering Pulley Removal Damage, Inc. General FSJ Tech 4 03-14-2003 04:53 PM

All times are GMT -6. The time now is 07:52 AM.

Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
corner corner