So as explained in this thread:
http://real4x4forums.com/PinzgauerBBS/v ... 12&t=12661
I have some blow-by coming out of my oil filler tube and a leak-down test shows some significant loss on at least one cylinder.
So I decided that I will open up my engine head and see what is going on.
Now, some background info, I'm converting my Pinz 710M into an overland truck so i can take it around the world in a few years.
That means I will sooner or later have to deal with maintenance/repairs in the middle of nowhere and by myself.
So I would like to do this job myself (with the help of this forum) and with basic tools.
By basic tools, i mean tools that I can carry on a year long expedition.
So an engine lift does not qualify, hence I will attempt to change my rings leaving the engine in the Pinz.
It might not be the best, but i think it's feasible from what I see around, Pinz manual says even cylinders can be changed with engine "in-situ", although not ideal.
I have some questions below, I thank you in advance for any advice you may share, especially if you have performed such a job yourself on a Pinz.
TOOLS:
(only the absolute mandatory)
- A sleeve to insert rings, part 905.3.11.102.2 from the manual, found one here
- Do I absolutely need a ring filer if i need to adjust the ring gap ?
- Pinz manual mentions tool 905.3.31.103.2 to align the cylinders. They also say a simple ruler could work, I'll go with this
- Tool to compress spring to remove valve, Pinz manual says 905.3.11.101.0, not sure where I can find this and if I really need it, see my questions below
- Tool 905.3.31.102.0 to remove the pin from the cylinder, again, not sure i need this, see my question below
- Any other special tool ?
- New rings of course, but for which cylinder diameter ? puch.at have different sizes, see my question below
- 4 Valve seals, only for intake valve, part #36 here
- O'ring of push rod protecting pipes, how many ? part#28 here
- Gasket set , part #34 here, what is included in there ?
- Any other parts that I should change anyway ?
- Do I need to remove both carbs in order to remove all valve covers and possibly cylinders ?
- Do I need to remove valves and springs to inspect them, can I simply do a leak test ? Otherwise i need to order the special tool to compress springs
- Do I absolutely need to remove pistons to change my rings only ? This would require a special tool 905.3.31.102.0, don't know where to buy this if absolutely needed
- Puch.at have different compression ring diameters, how do I know which diameter I need to order ? I need to open the head first and measure my cylinders ?, part#20, #21 and #22 here
- Do I need a special tool to insert rings over the piston ? Seems I can do this manually.