R50/53 Should I replace rear main seal?
#1
Should I replace rear main seal?
With the help of youtube I have just removed the 6 speed transmission from my 2002 R53 to replace it. I am obviously going to replace the clutch and pressure plate. What else should I think about replacing? The flywheel looks just fine. The rear main seal is as dry as a bone, but the guy who did the youtube video recommends replacing it while it is accessible. The mini has about 85k miles. What would you do?
TIA
Bob
PS..
TIA
Bob
PS..
Last edited by buckeye_hunter; 01-14-2020 at 08:28 AM. Reason: typos
#2
I always replace it when doing a clutch. For some reason the Coopers are prone to leaking at the rear main seal, not to mention just about everywhere.... I also replace crank sensor o-ring and oil filter housing seals. Depending on the mileage I may also replace oil pan gasket while I have good access.
#6
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Black Forest (01-23-2020)
#7
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#8
I bought a 2002 Mini in 2012...very few issues...gave to my son to take to Knoxville...he told me the tranny quit as he was turning a corner...I towed home to Ohio...found a used tranny...finally found the time to work on it...when I checked the tranny it would seem to shift fine, but would not move...to maker a long story short I removed the tranny...quite the task...bought a used 6-Speed Getrag to replace it...unknown condition but warranted...ordered new cv seals...replaced the rear main seal....messing with the tranny I took out..I turn the input shaft by hand and the out put shafts turn with it...same with the replacement... the clutch shows little signs of wear as does the pressure plate and throw-out bearing...am wondering if the problem is with the slave cylinder...when I disconnected the slave cylinder, fluid ran out of the boot...Question...if the slave cylinder is shot...does the tranny stay in gear or in neutral?
#12
Thanks for the prompt reply....I still can't wrap my head around why the car would not move...obviously the tranny was not engaged. It seemed to shift cleanly and the clutch pedal felt normal...CV's seem fine...no stripped splines anywhere...I don't want to start to reassemble until I am confident the problem is not in the tranny...Is there a way to bench test the tranny other than what I haver already done?
Thanks again for your time and help.
Thanks again for your time and help.
#13
I replaced mine when I did the clutch. It's right there after you have the clutch off.....the seal is cheap, might as well replace it. Just be careful and make sure you install the seal right....the last thing you want is to get it all back together, and have the new seal start leaking on you.
#14
#15
My son told me he heard what sounded like gears grinding. I assumed the tranny failed. But when I turn the input shaft by hand, all seems smooth. I guess I will take the it apart to inspect. I just can't understand why the tranny would not engage. I have been searching for a video on disassembling the tranny and have found nothing. My service manual is no help.
Thanks,
Bob
Thanks,
Bob
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