Valve stem seals... how to?

[addautomotive]

I've been searching for an old post that was either here or on vwdieselparts.com.

Someone described the tools and method to replace valve stem seals without removing the head.

I'd like to do this on my friend's golf, and my sister in law's jetta. I have a spare head to practice on.

Who has pics or info? If someone can walk me through the process, I'll write up a complete DIY with pics over christmas.

[addautomotive]

looky what I found:

http://www.boompa.com/guide/valve-stem-seal-replacement/112

[saurkraut]

You'll have to use the compressed air method.  Filling the swirl chamber with string will do you no good,

[Vincent Waldon]

You'll have to use the compressed air method.  Filling the swirl chamber with string will do you no good,

The really good news is that you don't need any trick... do each cylinder at its TDC and the valves will rest on the head of the piston.

Of course, be gentle as you push the new seal down...

For once (and only once) having an interference engine is an advantage !


Vince

[addautomotive]

Just make sure you have the correct cyl at TDC. Kerplunk...  :shock:

lol.... TING!

What are people using as a "cap" on the valve stem to prevent nicking the new seal?

Is this the right tool for installing the new seal?
http://www.pelicanparts.com/catalog/shopcart/TOOL/POR_TOOL_VWAUDI_pg23.htm

[Vincent Waldon]

That will work fine.... you can use a thin piece of aluminum tubing, a deep socket... lots of work-arounds.  If you can get that tool go for it... plastic is a good choice of material for that job.

In terms of the valve sleeves, the last couple of "head gasket kits" I've bought (Karl Reintz version) come with valve seals *and* a couple of silastic sleeves for the valve stems...  perhaps someone near you (or a local shop) has a spare ??  Dunno where the heck you'd go to just get the sleeve.

[Zulfiqar]

Ive changed many diesel valve seals like that - you need to make a tool that can compress the springs by levering on it while the tool's bar is mounted solidly to the head. The valves rest on the piston face when relieved of spring pressure

for installing the valve seals use a drinking straw - VW valves are 7mm in dia - get them wide milk shake straws - the seals will slip on them easily,