huge oil leak question

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Joined
Jan 25, 2016
Threads
10
Messages
41
Location
Gainesville, FL
Well I've fixed quite a few of the most commonly talked about oil leaks -- oil pump cover gasket, front crank seal, distributor o-ring, valve cover gasket -- since I bought this LC a few months ago.

But I just got another doozie that has me puzzled. It's located above the water pump at the top most attachment point of the pump where there is a bolt sticking out for the pump to mount to. The leak is where this bolt comes out of the timing chain cover (or front cover). See pic below.

I think it's just a coincidence but the leak started about the same time I replaced the timing chain tensioner. I can't see how they are related though. But I thought I'd mention it.

Why would oil be leaking out of this area? Do I have to take the front cover off to get to this leak? Won't that be a bear and a half.

I really need some advice with this one.

Thanks

Doug

oil leak2.webp
 
Did you install a new OEM crush-type metal gasket for the timing chain tensioner?
 
In the photo below you can see the gasket still in place. Your local dealer could order the gasket for you, probably get it overnight. The gasket goes on in a specific orientation, match up the flat edge of the gasket to the flat (lower) edge of the tensioner cap.

Landcruiser timing chaing tensioner gasketIMG_5882.webp
 
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I think maybe I have the same leak? I've just fixed my death wobble, replaced my dizzy oring, and am moving on the next leaks to try and fix. I've got a good amount of oil in the same place and it's really gunking up the lower radiator hose and everything down there. I've not done the oil pump or front main seal gaskets yet, but in chasing the mess it seems they are fine, and my oil is coming from this area. Since I've not done any work in this area, is it possible for the gasket on the timing chain tensioner to fail on its own? I'm starting the process of replacing orings, gaskets, and vacuum lines, but want to start with the biggest messes first. I've attached a pic of the mess below.

IMG_0307.webp


IMG_0305.webp
 
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