Sat, 08/21/2010 - 23:12
OK Garu's!!
I just pulled out my R50 engine and packed it up to slinger service, plus.. am expecting new seals and head work and to invest some dollars in getting the 'Hanz' back on line by next spring.
I pulled the engine out and took off all the electric stuff. The I disassembled the clutch assembly and found and oily mess.
The pressure plate and disc were completely saturated... The bike had now been leaking,,, much.. just a drip or two.. but when I pulled it apart... and oily mess...
So the engine is going for Slinger service, the threads on the exhaust are about 50%, so that will be reworked.. as well, most likely the valves/seats and guides as well the push rod tubes are rusty... etc, etc.
Hanz engine is getting a refit at best.. Am I reasonable to expect all new seals, head job, maybe new bearings??
Comments anyone??? Hanz is a 1960 R50...the last before the /2. He is looking pretty necked in the shop... hoping he does not have to wait long to get his soul back...
Thanks for the input.
Jim, Ketchikan, Alaska.
- 271 reads
Sun, 08/22/2010 - 07:00
#2
The tranny seals changed late
The tranny seals changed late in the /2 era allowing the use of hypoid gear oil...earlier seals weren't compatible with gear oil. Before that, it was advised to use only engine oil of the appropriate weight (typically 30 or 40 wt). If the input seal to the tranny is the culprit and you were using gear oil, it could be the geal oil leaked past the seals.
Tue, 08/24/2010 - 02:25
#3
I think you are both right..
You both have nailed it.. thanks for the comments. I will check in to this further.
Come to think of it.. the clutch engagement rod was very oily and when I dropped out the small parts in the back oil was running all over. My tranny may need a going over. I just could not see how the oil got between the diaphram and the main seal and had not considered the the tranny route.. but it is the most logical.. There was no evidence of oil on the front side, just a seep at the bottom at the base.
Really the only way the oil could completely soak the clutch disc would be from the transmission engagement pin....maybe I over filled the tranny.. am using regular motor oil per the original call out... Casterol 30.
The felt seal is attached.. but the throw out bearings and small parts were saturated too.
Well the engine is all crated up and heading south on the barge for pickup in Seattle.. I will take the engine to Kevin Brooks in Olympia for the workover. Will keep you all posted on the findings. Maybe the tranny needs to go somewhere too.
Jim, Ketchikan, Alaska
Tue, 08/24/2010 - 07:47
#4
From your description, you
From your description, you may indeed have just overfilled the transmission. That will cause oil to get into the hollow input shaft, and if it is constantly there, then it could get past the felt that is supposed to seal the front opening.
Wed, 08/25/2010 - 01:47
#5
I looked at the "felt" and it
I looked at the "felt" and it was pretty smooth and seemed compressed. I ordered a new felt and rubber seal for the back of the tranny. The throw out bearings are also very oily.
Thanks for the tips.
jim, ketchikan,ak
Wed, 08/25/2010 - 06:01
#6
The throwout bearing should
The throwout bearing should be somewhat oily, otherwise it will freeze up over time. It gets oiled by splashing oil from the gears in the tranny. The felt is there to keep the oil from migrating down the pushrod.
What kind of oil is on your clutch? If you're running gear lube in your transmission, the answer should only take a sniff of the clutch. Usually an engine rear main seal leak won't get to the clutch, but a transmission input seal leak often will.
Also, if your transmission input seal is leaking, it may be because the front bearing is on its way out. According to Duane Ausherman (www.w6rec.com), a failing engine rear main bearing can first ruin the transmission bearing.
You should investigate this and verify that your transmission is ok before putting it all together again and ruining another clutch.
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