Leaking Timing Gear Cover Gasket (Volvo D1 or 2020/2030)

[umu]

I have an oil leak that I could locate after quite some investigation to be from the REAR gasket (see red circle in picture 1) under the timing gear cover, next to the back plate of the raw water pump (have already changed the gasket under the back plate as I hoped this was the cause).




The Engine is a Volvo Penta D1-20, but the design in that are is identical on all the D1 and 2020/30 series

Besides the removal of the sea water pump, the timing gear cover, fuel pump diconnection, pulley disassembly and a few other thing what concerns me most:
To get the plate and the rear gasket off, it looks like all the gears under the the timing gear cover need to get off beforehand. In particular the gear with the governor weights sitting on the camshaft is of concern - the workshop manual describes this, but for some reason only together with taking out the entire camshaft and this gear (which in turn requires taking off cylinder head and some other major parts) ...

Has anybody done this repair/exchange of these gaskets?
Is there any reasonable way to get this gear off (and back on again) the camshaft without removing the entire ??

Any further advice ???

Thanks in advance
Uwe

 

[john_morris_uk]

I have an oil leak that I could locate after quite some investigation to be from the REAR gasket (see red circle in picture 1) under the timing gear cover, next to the back plate of the raw water pump (have already changed the gasket under the back plate as I hoped this was the cause).


View attachment 45977

The Engine is a Volvo Penta D1-20, but the design in that are is identical on all the D1 and 2020/30 series

Besides the removal of the sea water pump, the timing gear cover, fuel pump diconnection, pulley disassembly and a few other thing what concerns me most:
To get the plate and the rear gasket off, it looks like all the gears under the the timing gear cover need to get off beforehand. In particular the gear with the governor weights sitting on the camshaft is of concern - the workshop manual describes this, but for some reason only together with taking out the entire camshaft and this gear (which in turn requires taking off cylinder head and some other major parts) ...

Has anybody done this repair/exchange of these gaskets?
Is there any reasonable way to get this gear off (and back on again) the camshaft without removing the entire ??

Any further advice ???

Thanks in advance
Uwe

I had a leak from that area. I was convinced that it was one of those gaskets.

It wasn't; it was the 'O' rings on the throttle, stop lever shaft and governor connector shaft. (The latter only 'just' comes out of the casting bit its got an 'O' ring let into a slot on the shaft.

The good is that the complete set of 'O' rings from Volvo-Penta were less than a fiver. The bad thing was that you have to strip lots of the end of the engine down to get at the 'O' rings… Mine doesn't leak any more. :encouragement: