Valve clearance M25XPB

[pullark]

Hi,
I want to check valve lash/clearance and reading the service manual it talks about adjustment once inlet valve has opened and piston is completing compression stroke. I'm not 100% sure which valve on #1 cylinder is the inlet. Is it the first or second valve? I'm thinking valve #1 is inlet on #1 cylinder, valve #3 on cylinder 2 and valve #5 on cylinder 3. Am I correct? Are there any tricks with setting valves on these motors?
As always, the accumulated wisdom of members is appreciated.

 

[Stu Jackson]

Here's what our C34 Tech wiki has on valves:

http://www.c34.org/wiki/index.php?title=Adjusting_Valves

 

[pullark]

Thanks Stu,
It is not so much the procedure I'm struggling with. It's identifying the valves. If I set the valves assuming #1 is intake when it's actually exhaust then the valve timing will be 360 degrees out won't it? I cannot find a diagram which sets out the valve layout. Looking at the motor and trying to relate valves to intake and exhaust ports I think the first valve (looking from the crankshaft pulley end of the motor) is inlet but I'm hoping someone out there will know for sure.

 

[Joe]

In this Diagram of M25.... rocker assembly. The intake is #1, exhaust #2. You can find diagrams or all motors and their components with complete listing of part numbers and prices here: http://shop.toadmarinesupply.com/marine_diesel_direct/Universal/

 

[pullark]

Thanks Joe,
This is exactly the information I needed. The M25XPB has the same valve arrangement as the earlier models. I was assuming first valve was inlet when in fact it's exhaust. Hopefully I can now get her fired up.
Cheers
Kevin