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Author Topic: Pushrod seal replacement...  (Read 2147 times)

disco51

  • Guest
Re: Pushrod seal replacement...
« Reply #15 on: February 11, 2014, 12:52:46 AM »
1st side went fairly well tonight.  I spent the most time cleaning all of the old sealant off.  I opted for no sealant this time.  Just replaced the cylinder base o-ring, the 2 stud o-rings, the pushrod seals, and the head gasket.  I kept the piston in the cylinder.  Just removed one of the circlips and slid the piston out from the connecting rod.  That was the biggest pain.  Had to heat it with a hair dryer and give it a little encouragement  from the other side.  
Of course, I haven't started the thing, so the biggest pain may be yet to come when I'm cleaning a bigger pool of oil from under the bike  ;D
As always, thanks for the tips.
Need to adjust the rocker end play before heading to the other side.  Also have to replace the valve cover gasket as it ripped when I pulled off the valve cover.

Offline Ed Miller

  • Mt. Olympus Resident
  • ****
  • Posts: 2425
Re: Pushrod seal replacement...
« Reply #16 on: February 11, 2014, 12:38:36 PM »
I made a wrist-pin removing tool with a long bolt and a couple of deep-well sockets.  All-thread would have worked but I didn't have any small enough to fit through my 3/8" drive deep-well sockets.  Now I just have to be able to find it next time I do a job like that!

Did you at least put oil on the push rod seals?  That's what Oak says to do in his top end manual, so that's what I did this time.  Monday a week ago I took it out for the initial ring break in ride on a nice, warm, sunny day.  Now I still have about a foot of snow.  

« Last Edit: February 11, 2014, 12:40:19 PM by Ed_Miller »
Ed Miller
'81 r65
Falls City, OR

disco51

  • Guest
Re: Pushrod seal replacement...
« Reply #17 on: February 11, 2014, 01:19:46 PM »
I managed to make it through snowbum's dissertation on the task.  He states you don't need the sealant if you have the cylinder with the large o-ring (although he still recommends sealant).  Mike V had success without the sealant as well.

I did oil the outside of the pushrod seals with engine oil (external part) and put dielectric grease on the inner portion per his suggestion.  

I also oiled the large oil ring per snowbum's instructions just prior to torquing everything down.

I tried to email oak about his top end manual, but never got a reply.

Need to do the other side now, but I'm tired of cleaning.

Offline montmil

  • Mt. Olympus Resident
  • ****
  • Posts: 8371
Re: Pushrod seal replacement...
« Reply #18 on: February 11, 2014, 04:30:03 PM »
Quote
... I tried to email oak about his top end manual, but never got a reply.

Oak Okleshen has been in poor health of late. His wife helps when possible with his mail. Most of the AirMail tech articles being published are from his hefty supply of unpublished work.

I'd suggest you just send the $25.00 and get his Top End Manual. I have it. It's a fine addition to my Airhead Tech Library and definitely worth the money.
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet