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EFV-8 Club Forum / General Ford Discussion / generator front bearing replace

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Posted By Discussion Topic: generator front bearing replace -- page: 1 2     fsacht 04-27-2010 @ 4:47 PM reply profile send p.m. Member Posts: 71 Joined: Oct 2009 Want to replace front bearing of 48 generator. How does one remove the pulley from the armature shaft? The shaft is threaded,a right hand thread. I have the rear cover off and the front bracket and armature in a vise but cant budge the pulley. Any advise to unsrew that pulley from the shaft and then removing and replacing the bearing. Seems no one in my area will work on these generators. 37RAGTOPMAN 04-27-2010 @ 5:32 PM reply profile send p.m. Senior Posts: 1967 Joined: Oct 2009 loosen the nut on the front pulley a few turns,,stand on end, soak with rust buster, not the cheap stuff, do this for a few days,let it soak in around the shaft you can Use a heat gun and heat up the pulley also I would then tap the shaft while holding the pulley.wear work gloves, use a BRASS HEAD HAMMER,so you do not harm the treads, this should remove the pulley it probably is rusted on,pretty good, I think a press would break the pulley, because it is hard to get behind the pulley to get a hold of it, there are some rebuilders in the V8 TIMES, and you can just send out and have rebuilt by a expert.if the front bearing is bad,brushes rear bushing etc,? I am sure it is time to get it done so you do not get stranded on the road, do not hold the armature in the vise. you will distort it,and may harm the windings. hope this helps, 37RAGTOPMAN 42wagon 04-28-2010 @ 3:24 AM reply profile send p.m. Senior Posts: 586 Joined: Oct 2009 Just to add to what 37 ragtopman has told you, the pulley is not scr*w*d on. The shaft has a taper to it and the pulley has a taper fit just like your rear axle and brake drums. The bearing has a press fit in the front housing and will need to be pressed out once you have the pulley off. If the bearing is frozen and the shaft has turned in it you may need to turn the shaft and make a spacer for a proper fit in the bearing. Ted supereal 04-28-2010 @ 7:06 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Take the assembly to a good machine shop and have it pressed apart. Hammering will almost always cause damage. Take along a replacement bearing to be installed. Chances are that is the generator is old enough to need a bearing, the rest of it is also badly worn, and should be overhauled. fsacht 04-28-2010 @ 3:53 PM reply profile send p.m. Member Posts: 71 Joined: Oct 2009 The generator in question is the one that was on the car, a 1948 Mercury, at the time I puchased it. The pulley is not pressed onto the shaft but rather screws on. This is not unusual. I have a couple generators of this kind, one of which is from the 48 Merc I purchased in 1959, which I still have. The only generator I have that has a pressed on pulley is from a 1940 ford that had the fan secured to the face of the generator pulley. Two points. In the northwest Indiana area I haven't learned of one who rebuilds these old generators. How do you secure the armature to keep it from rotating without damage, while attempting to remove the pulley that is not pressed on but scr*w*d onto the armature shaft? 37RAGTOPMAN 04-28-2010 @ 4:12 PM reply profile send p.m. Senior Posts: 1967 Joined: Oct 2009 I was under the impression that it was a press on pulley.I never saw a screw on pulley,I guess the 48 MERCURY is different,I rebuilt and owned MODET T MODEL A and 49 51 53 FORDS BUT leave it to FORD to come up with a screw on pulley, I think you are going to have to buy the FORD service bullitins, for that job,or a FORD Repair Manual and I bet that they had special KRW tools to do this, I would call a expert and ask them , or send it out to get rebuilt, SUPERREAL I did not say HAMMER on the shaft to damage it,,I said tap on it, I would think a person that is working on a certin job would know if they were hammering to hard and damage and would KNOW THE DIFFERENCE.!!! the part they are working on,, GOOD LUCK with the pulley, KEEP ON TRUCKING 37RAGTOPMAN RSS 04-28-2010 @ 5:08 PM reply profile send p.m. Member Posts: 37 Joined: Oct 2009 I did one of those generators a couple of years ago, I put the armature in a wood vice and loosened the pulley with a strap wrench. I also live in NW Indiana (Dyer). If you need help?, you could bring it to me and I will help. Randy c-gor 04-28-2010 @ 5:42 PM reply profile send p.m. New Member Posts: 130 Joined: Oct 2009 Frank Contact Regis Schilling NORG. I believe he can help you Craig Gorris TomO 04-29-2010 @ 7:25 AM reply profile send p.m. Senior Posts: 7258 Joined: Oct 2009 Frank, MG Auto Electric in Arlington Heights, IL rebuilds the 6V generators. The owner is a Model A guy. His phone number is (847)394 1698. Arlington Heights is a northwest suburb of Chicago. Tom supereal 04-29-2010 @ 11:24 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 37: If someone hasn't done, or isn't familiar with the job, "tapping" usually doesn't mean much, and when the part doesn't budge, it often gets damaged. We have lots of this type of problem with things brought to our shop after the fact, when they really didn't "know the difference". We don't have any quarrel with anyone trying their hand at repairs, because that is what this Forum is about. A good many old car hobbyists are not mechanics, and when faced with a problem, getting help is not a sin, and can often be a less expensive solution.

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