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Old 10-22-2012, 06:39 AM   #1
Mikey10000 OP
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The Cases are Split!

I finally got the cases split on my 1150 to replace the broken rails. The rails had broken and the timing chain had ground down the chain tensioner piston enough to make it start flying around the inside of the engine. What a mess!

I now have a couple of questions on reassembly.

1. what is used to seal the halves back together, and is it BMW specific.
2. Do i need new crankshaft rear seals ( I assume So )
3. How do I drive the new seals back in

I just need to order the parts now and reassembly can begin.
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Old 10-22-2012, 10:17 AM   #2
scooteraug02
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Check here

http://www.maxbmwmotorcycles.com/fic...9&rnd=08102012

Lists all the lubes and sealants BMW recommends. I bet Locktite has similar. Call a couple of dealerships and see what they recommend.

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Old 10-24-2012, 06:01 PM   #3
cardoctor1
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look thru the old threads i seem to remember another inmate doing the same .
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Old 10-25-2012, 04:00 AM   #4
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I used two peiced of electrical pvc piping. its grey in color. cheaply available at lowes.

This is the rear of an 1100 case with two oil seals.





Front seal, same idea.




The BMW sealant is Hylomar rebranded. get it through Max or Amazon.
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Old 10-25-2012, 04:03 AM   #5
krellheat
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Hylomar Universal Blue

http://www.hylomarsealant.com/

Also rebranded at Permatex
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Old 10-25-2012, 04:04 AM   #6
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I prefer this version in the yellow box direct from Germany.

http://www.hylomar.com/index.php?opt...d=62&Itemid=70
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Old 10-25-2012, 05:49 AM   #7
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Looks like ThreeBond 1194. That's what I use on all my other engines. Haven't split apart a BMW yet, but any similar semi-drying case sealer ought to be fine.
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Old 10-25-2012, 06:35 AM   #8
krellheat
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I used threebond in snowmobile engines with no issues. The hylomar is easier to clean off later as it always stays flexible.
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Old 10-25-2012, 08:46 AM   #9
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From my BMW REPROM;

Assembling engine block

Clean and degrease sealing faces (arrow)
and coat with 3-Bond 1209.
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Old 10-25-2012, 08:55 AM   #10
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From your question regarding the sealant to use, I assume that you do not have the BMW factory repair manual and your deep into your boxer engine.

The factory repair manual has a lot of information, necessary for what I would deem the successful reassembly of a boxer engine.

Torques, clearances, assembly suggestions, fluids, sealants and other critical details are contained therein.

I would procure the manual before going further.
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Old 10-25-2012, 10:51 AM   #11
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Quote:
Originally Posted by def View Post
From your question regarding the sealant to use, I assume that you do not have the BMW factory repair manual and your deep into your boxer engine.

The factory repair manual has a lot of information, necessary for what I would deem the successful reassembly of a boxer engine.

Torques, clearances, assembly suggestions, fluids, sealants and other critical details are contained therein.

I would procure the manual before going further.
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Old 10-25-2012, 11:38 AM   #12
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Quote:
Originally Posted by def View Post
From your question regarding the sealant to use, I assume that you do not have the BMW factory repair manual and your deep into your boxer engine.

The factory repair manual has a lot of information, necessary for what I would deem the successful reassembly of a boxer engine.

Torques, clearances, assembly suggestions, fluids, sealants and other critical details are contained therein.

I would procure the manual before going further.

I have the manual and the haynes, I just find it better to get more realistic views from people that have done it on older bikes. there are also so many varieties of the sealant and just wanted to go to Napa or a local store and pick one up.

I appreciate all the replies, just the kind of stuff I was looking for, especially the poor mans seal driver from krellheat.
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Old 10-25-2012, 12:27 PM   #13
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Quote:
Originally Posted by Mikey10000 View Post
.

, especially the poor mans seal driver from krellheat.
Real destitute men use an empty coke can with the end cut off.
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Old 10-25-2012, 01:50 PM   #14
Mikey10000 OP
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Quote:
Originally Posted by Steptoe View Post
Real destitute men use an empty coke can with the end cut off.

i like it, is that for the inside seal?
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Old 10-26-2012, 06:32 AM   #15
def
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Quote:
Originally Posted by Mikey10000 View Post
I have the manual and the haynes, I just find it better to get more realistic views from people that have done it on older bikes. there are also so many varieties of the sealant and just wanted to go to Napa or a local store and pick one up.

I appreciate all the replies, just the kind of stuff I was looking for, especially the poor mans seal driver from krellheat.

Mickey, are you documenting with photos and plans to post once you're done? Hope so.

I would be interested to see the old chain rails as well as hear to what extent the broken bits were distributed throughout the engine.
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