Oil leak around rear of sump

Discuss mechanical problems here.

Moderator: Moderators

Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Oil leak around rear of sump

Postby Tim01577 » Sun Sep 02, 2018 10:56 am

I have just got a wee traveller with the standard 1098 engine in it , after leaving it in the garage over night I found a small amount of oil on the floor to the rear of the engine . After a good clean of the engine I left it for 24hr without running the engine and yet again a small amount of oil on the floor, after inspection it look to becoming from the end of the sump . My question is would this be the sump gasket or the scroll seal , as the oil is not coming out of the wee hole on the bell housing. Any help would be great full.

philthehill
Minor Maniac
Posts: 6303
Joined: Thu Jul 19, 2012 12:05 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby philthehill » Sun Sep 02, 2018 11:11 am

First off I would advise that you remove the sump and replace the sump gaskets taking care not to have the cork seals too long.
See BMC wksp man section AA. Fig AA.26 & AA.27 for details.
Soak the corks overnight in engine oil after cutting. Lightly smear the sump gaskets with grease. That keeps the gaskets supple and makes them easy to remove and the majority of the time re-useable.
If it was the rear crank scroll the oil would be exiting the bell housing hole fitted with the jiggle pin.
Please let us know how you get on.


Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby Tim01577 » Sun Sep 02, 2018 11:37 am

Thanks I will order up a new sump gasket tomorrow and let you know how things work out

philthehill
Minor Maniac
Posts: 6303
Joined: Thu Jul 19, 2012 12:05 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby philthehill » Sun Sep 02, 2018 11:51 am

The 'sump gasket' is comprised of a set of four pieces - the two side pieces which are shaped differently to follow the bottom of the block and the two end corks.


Declan_Burns
Minor Legend
Posts: 1733
Joined: Wed Apr 18, 2007 7:32 am
MMOC Member: No

Re: Oil leak around rear of sump

Postby Declan_Burns » Sun Sep 02, 2018 1:27 pm

I have never had much success with the cork seals. I use the rubber seals from the 1275 engine which need minor dressing to fit. No leaks in the last 10 years.

Regards
Declan


Regards
Declan

Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby Tim01577 » Sun Sep 02, 2018 4:33 pm

Do you find it best to use sealant to stick it in place and if so which would be the best.

philthehill
Minor Maniac
Posts: 6303
Joined: Thu Jul 19, 2012 12:05 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby philthehill » Sun Sep 02, 2018 5:15 pm

I have never had any problems with the cork sump seals therefore never had need for sealant to stick the seal whether it be cork or the later neoprene 1275 type.


Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby Tim01577 » Mon Sep 03, 2018 8:35 am

Thanks Phil, I will try this at the weekend

Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby Tim01577 » Thu Jun 13, 2019 4:01 pm

After a rather long time I removed the sump as the drip had change to a pool on the garage floor, and much to my surprise the new gasket and cork seals worked fine, I also change the oil filter at the same time and not a moment to soon , it looked like someone had twisted the filter element around like ring out a cloth . Trixie is now drip free and a happy Traveller again.
Many thanks to all

minijojo
Minor Fan
Posts: 160
Joined: Thu May 14, 2015 5:16 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby minijojo » Thu Jun 13, 2019 5:50 pm


Tim01577
Minor Friendly
Posts: 11
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Re: Oil leak around rear of sump

Postby Tim01577 » Fri Jun 14, 2019 10:42 pm

If I find that the sump starts to leak oil again from the back seal I will try this new seal are they off the 1275 engine .


Who is online

Users browsing this forum: No registered users and 10 guests