 | Home > Puma (Tdci) > Crankshaft rear oil seal again |
 
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497  
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Did my clutch a couple months ago and immediately had a engine oil leak from the bell housing.. I should have left well alone I suppose but the kit came with a new seal..
I followed the instructions Re placing the sealant in the required spots but obviously didn't work.. So boxes out again.. I took them out separately this time with Jack's, and the transfare box proved to be a real pain to separate.. I should have removed the input gear before starting to separate the transfare box.. The seal with the leaks clearly visible  Click image to enlarge The clutch and concentric slave were still OK with no oil contamination.. I had a bit transmission oil dripping as well and I'm pretty certain that was the transfare box input seal was responsible.. The gearbox output seal looked OK.. Click image to enlarge I may run the engine for a bit when the new seal is fitted before putting the gearbox back on.. ๐ค |
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10th Dec 2023 8:20pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3667 
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Been here a year or more back. Have a search and you might find it (if not Iโll have a look tonight). For me it came down to the location of where you put the sealant. Follow the workshop manual, not what it says on the seal packaging.
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11th Dec 2023 1:11pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2407  
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Were both the seal and crankshaft surface dry and oil free prior the fitting? Puma 110" SW
............................................................. Earth first. Other planets later |
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11th Dec 2023 1:55pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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the instructions in the workshop manual were followed to the letter and the seal bolts were torqued to 9.5nm... my leak is not from the ladder joint or the shaft..its the bottom strip of the gasket that is leaking..you can see in the photo its dripping down bothh lower webs...if you look at the photo with the gasket removed you can see the changed colour all along the bottom gasket joint...thats where the oil is escaping...
the seal was fine before I changed it..I just replaced it cause I got it with the clutch kit |
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11th Dec 2023 6:09pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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sorry im referring you to a photo I haven't yet posted...whenni find my phone ill post the photo with the seal removed
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11th Dec 2023 6:12pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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Here is the photo with the crank seal removed the leak is from the bottom of the gasket in the area of the two bottom bolts and down each web.. The line of the ladder joint was OK..
Click image to enlarge |
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11th Dec 2023 8:09pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2407
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1)Make sure your PCV valve system is working correctly so the blow-by escapes though the valve and not the engine seals.
2)The race on the crankshaft is in good condition. Otherwise give it a good clean or use a 1000 grit to remove any sticky matter. 3) Since you are there I would check the out of round with a DTI. Very unlikely it is wrong though. 4) Again, do not add any oil neither to the race nor to the seal an once fitted do not rotate for xx hours. I have seen some owners to put a bit of RTV all around the seal where the bolts go. Puma 110" SW ............................................................. Earth first. Other planets later |
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12th Dec 2023 11:41am |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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I'm inclined to think the same, because in this case the bottom part of the seal appears to be the culprit and I don't really know what else I could have done.. A very thin bead of rtv round the outside edge of the sealing lip.. Along with applying it to the spots indicated in the workshop manual.. Tou can actually see that still adhering to the ladder frame joint in the photo..
I'll be getting it all cleaned off soon then it will be make me mind up time.. Cheers everyone for your thoughts.. |
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12th Dec 2023 12:22pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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Got a couple hours today and fitted the seal.. Fingers crossed this time๐..
Then got a little bit metal cut out to fashion a locking tool for the flywheel.. All nice and clean and bolts run in to check and make sure there were no hitched when the seal was offered up Click image to enlarge One of the seal fitted with the fitting aids that come with it.. The white one ensures the seal slides on to the shaft easily The yellow one locates the seal by fitting to the flywheel spiggot on the end of the crankshaft and then locates on the back housing of the seal.. To me the bolts pretty much do that anyway.. Click image to enlarge Click image to enlarge |
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12th Dec 2023 5:16pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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Got the two boxes back in today.. The gearbox with the help of a couple long studs
Click image to enlarge The transfare box after fabricating a little cradle Click image to enlarge Click image to enlarge The biggest help with a transfare box I find is to remove the input gear and reinstall once the box is fitted Click image to enlarge |
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14th Dec 2023 7:19pm |
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| andy63 Member Since: 30 Jun 2023 Location: north east Posts: 497
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Last Post on this thread and a posotive outcome..๐
I'm happy that the recent work to put right the leaking rear crankshaft oil seal has turned out ok.. No leaks appearing at the bellhousing and I've done close to 400 miles since the work was done.. I did end up using a very thin bead of rtv silicone round the perimeter of the seal lip.. Couldn't see any other option as the last one was leaking along the bottom edge.. That and buying a good quality(wurth) rtv silicone is the only difference between this attempt and the last one.. |
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21st Dec 2023 4:40pm |
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