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 Post subject: Oil pump leak
PostPosted: Sun Dec 03, 2017 11:23 am 
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Joined: Sun Jul 16, 2017 10:51 am
Posts: 7
Car Model: ST185 CS/RC
Hi all

I plan to change the timing belt and sort a oil leak coming from the oil pump area on the CS over the xmas holidays.I plan on replacing the cam seals, crank seal and oil pump gasket when I'm in there. What's involved in changing the gasket and does the pump need to be removed from the car? Any info from anyone who has done this job welcome.


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 Post subject: Re: Oil pump leak
PostPosted: Mon Dec 04, 2017 11:04 pm 
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Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3587
Location: Bournemouth
Car Model: None
One of the common leaks from that area is the gasket between the pump housing and block. To change this requires sump removal - not the end of the world but quite a bit of work - both crossmembers off to access all the bolts. These hold 2 of the 4 engine mounts but thankfully on the gen 5 no suspension or steering parts. The ones I've come across, all the fixing bolts are loose but tightening them doesn't stop the leak as the gasket will have been damaged by the oil leakage.

If you're lucky it will be crank seal, pump seal or the gasket between the pump and pump housing - this is a special round rubber seal available from TCB or Toyota. These can all be changed without removing the oil filter housing or sump.

IMO - buy all the gaskets ready, take the covers off and investigate exactly where the oil is coming from. If it's not coming from the back of the oil pump housing then just torque down the fixing bolts and change the remaining seals / gasket. Don't be tempted to use silicon / instant gasket - it won't hold back the oil pressure.

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 Post subject: Re: Oil pump leak
PostPosted: Wed Dec 06, 2017 8:42 pm 
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Joined: Sun Jul 16, 2017 10:51 am
Posts: 7
Car Model: ST185 CS/RC
Thanks for reply, hopefully it will be one of the other seals and not the oil pump gasket, in the process of looking up part numbers so I can ring my local dealer tomorrow.
Going to start stripping it down the weekend hopefully. I'll keep ye posted.


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 Post subject: Re: Oil pump leak
PostPosted: Wed Dec 06, 2017 11:38 pm 
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Joined: Sat Sep 02, 2006 3:13 pm
Posts: 3587
Location: Bournemouth
Car Model: None
It's worth contacting TCB - www.tcbparts.co.uk who are very knowledgeable and carry most of these parts in stock. Excellent service.

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