When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Mark G if it is a stock pulley it should come off pretty easy. If it has been changed to a different style pulley it may be galled on. With the nut off use a little penetration oil WD40 or such and let it sit. Tapping and heat will also help. If all else fails you can break the alt in half, put the rotor in a vise and with 2 screw drivers under the fan as close to the rotor shaft as you can then gently pry the screw drivers up in a one then the other motion then lift both up together. Unless you get brutal with it this won't warp the fan.
BB72 you have a beast of a different color. The CS144 with the split tappered collar is a bear to disassemble. Break the alt in half, clamp the rotor in a vise. take the nut and lockwasher off. Now comes the fun part. You will now need a socket big enough to fit over the tapered collar and rest on the inside of the pulley, a 30mm socket is what i think I use. Now you need a big a$$ hammer and a little anger. with the rotor clamped tight and the socket on the pulley with the lip of the socket not touching the split tappered collar but resting on the inside of the pulley beat that ba%#%# hard. You may try to use a socket that you have little use for cuz you may booger it up with the hammer. Sometimes the pulley will come loose with one strike and sometimes it will take many. Once it comes loose it will lift right off. I strongly suggest you change the bearing at this time so you don't have to do it again later. Also be sure to inspect the rotor shaft at the needle bearing end and the shaft where the bearing and tappered colar ride. This setup has a problem destroying the rotor shafts and bearings. If the rotor shafts arren't smooth the rotor should be replaced. You should also replace the split tappered collar if you are using the same type of pulley again. Have fun Mark
Excellent Mark....exactly what I was looking for. Oh....how do you get the nut off......
Well, to follow up. I zipped off the nut and, yeah, the pulley and guard just came right off. Didn't have to hammer or pull, it literally just fell off. I remember having a really hard time in the past ...might have been on another make vehicle. I took the alternator apart to put some new parts in it, paint up and get the pulleys and fan plated. Thanks guys.
still waiting to hear from BB72. His pulley removal will be a good bit more difficult.
Got your message, went right out and tried it. Really busy Well, it worked. Broke it in half, used my brass vise inserts to hold the end shaft with a larger than taper socket and a 6lb mini sledge. Three hits...hard hits and it came loose. Excellent. Thanks buddy. The alternator is salvagable. I thought I had bent the shaft when in fact it was the taper that was a little off.
over 20 posts with varying degrees of good information and you finally took the nut off...amazing,....... now that was not too hard was it......
I just wanted to get you guys' take and have the tools on hand.
BTW, National Automotive Lines (800-428-4300) is a great source for alternator and starter parts (as well as other more unusual parts few other companies sell ..at a fraction of the price of most companies). They are somewhat old fashioned and you really need a catalog but I highly recommend them for you guys that like to rebuild start/alternator and other vehicle assemblies rather than replace. I like ordering from them becasue it reminds me of the personal touch that most companies used to give. I've been ordering from them for years