79 FLH Throwout Bearing Repair

79 FLH Throwout Bearing

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HDChevroletUSA
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79 FLH Throwout Bearing Repair

#1

Post by HDChevroletUSA » Tue Aug 28, 2018 11:13 pm

I've pretty much decided that the throwout bearing on my 79 FLH has let go.
The bike's in NY, and I'm in Texas. Heading up there for a week in October and want to fix it when I'm there.
Can you guys suggest where I should go to order the parts? You've always been so helpful in this regard when I asked for advice on my Panhead.
Thanks.



Bosheff
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Re: 79 FLH Throwout Bearing Repair

#2

Post by Bosheff » Wed Aug 29, 2018 12:46 am

A 79 BT does not have a throw out bearing. Instead, it has 2 thrust washers and a bearing about the size of a dime that do the job. More than likely these parts have been destroyed most likely because of running the tranny low on oil. At one time a repair kit was available from HD, but I don't know if it still available. Probably the aftermarket sells what you need....bosheff

guppymech
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Re: 79 FLH Throwout Bearing Repair

#3

Post by guppymech » Wed Aug 29, 2018 5:03 pm

The throwout bearing oil slinger slot gets worn out in use then it starts spinning on the clutch release pushrod, you may want to get a new one. Harley p/n 37228-75, Eastern Performance makes one that's made in USA, at least mine was when I got it last year on ebay.

VPH-D
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Re: 79 FLH Throwout Bearing Repair

#4

Post by VPH-D » Wed Aug 29, 2018 6:42 pm

Make sure the clutch adjustment screw is backed off a little, to give the bearing a little free play. This is the last thing done in adjusting the clutch.
VPH-D

Andygears
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Re: 79 FLH Throwout Bearing Repair

#5

Post by Andygears » Thu Aug 30, 2018 12:57 am

Many Independent bike shops are "Eastern Parts" dealers, either local to you or in the NY area. I've used Eastern parts with good results. By the way, a large early style bearing won't fit under your cover.

Andygears

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Re: 79 FLH Throwout Bearing Repair

#6

Post by PanPal » Thu Aug 30, 2018 1:40 am

I used the early large cone shaped bearing with a new correct pushrod on a 80 FLH with good results.
A buddy was just complaining about some Eastern parts the other day. Crank pins I believe. Just my 2.

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Re: 79 FLH Throwout Bearing Repair

#7

Post by Andygears » Thu Aug 30, 2018 2:07 am

PanPal wrote:
Thu Aug 30, 2018 1:40 am
I used the early large cone shaped bearing with a new correct pushrod on a 80 FLH with good results.
A buddy was just complaining about some Eastern parts the other day. Crank pins I believe. Just my 2.
By all means, if the larger bearing assy. Will fit, use it. Pan pal, was it a non-kicker cover? HDChevrolet which do you have?

I can remember trying to fit the big bearing under a kicker style cover that did not have clearance to get the necessary throw when bolted up. But my memory is old as I am.

Andygears

HDChevroletUSA
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Re: 79 FLH Throwout Bearing Repair

#8

Post by HDChevroletUSA » Thu Sep 13, 2018 7:56 pm

Thanks for replies everyone.
My 79 FLH is all stock (non-kicker) with the 'early' 79 pivot arm, so I assume it has the double washer/dime size set up.
I guess I'll give the Eastern parts (original equipment style) a try and hope for the best.
Thanks everyone!

HDChevroletUSA
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Re: 79 FLH Throwout Bearing Repair

#9

Post by HDChevroletUSA » Tue Oct 09, 2018 9:35 pm

I ordered the Eastern Throwout Bearing Kit from J&P. Great quality and it arrived on time.
The dime bearing with the roller bearings was shot. There were no roller bearings left in it.
Also, the rod was worn badly at the clutch pack end.
Biggest trouble I had was I couldn't remove the exhaust due to 39 year old rusted bolts that fastened the exhaust pipe to the head. Not wanting to break a bolt off in the head or melt the head with heat, I ended up removing several transmission side cover studs. There wasn't room to back out the 2 studs next to the exhaust pipe so I ended up cutting them. Once I was able to remove the transmission side cover, the rest of the job was easy.
I only got to ride it for an hour on my last day of vacation in NY. The clutch was perfect!!
What a ride! 50 degree weather in October in upstate New York. It doesn't get better.
Thanks again for all your help!

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Re: 79 FLH Throwout Bearing Repair

#10

Post by RooDog » Wed Oct 10, 2018 9:54 pm

That big old hunk of cast aluminum called a head will not be damaged by heat unless some klutz lays a cutting torch too it. Normal torch heating of the exhaust stud nut, even to cherry red, will not injure the head, there is just too much mass there to be hurt, and the flange on the pipe acts as a heat shield too....
Heat is a wonderful tool. Heat it, squirt it with WD40, or some other penetrent, let it cool and try a wrench, repeat if it don't work.
RooDog

HDChevroletUSA
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Re: 79 FLH Throwout Bearing Repair

#11

Post by HDChevroletUSA » Fri Oct 19, 2018 10:02 pm

Thanks for the advice. I'll definitely use it next time I'm faced with the issue. For now, all is good!

Bosheff
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Re: 79 FLH Throwout Bearing Repair

#12

Post by Bosheff » Sat Oct 20, 2018 11:47 am

Replace the allen head bolt the factory originally installed with a stud and you never have that problem again....bosheff

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