Removing liners 4718

[paddy]

Hi Lads,

ok so iv biten the bullet bought 3 pistons and liner kits and there on the bench.

just wondering how difficult is it to remove the liners from the block?

Thanks in advance

Paddy.

 

[Renze]

I layd my 3011 engine on a workbench on the side, and hammered the liners loose with a long 30mm steel rod (hydraulic piston rod) long enough to miss the crankshaft when my hammer would miss. Mine were pretty stuck. I'd advise to scrape as much rust as you can from the inside of the engine once the liners are out, my 3011 was partly filled with rust flakes, building up around the rearmost cylinder because there is the lowest cooling liquid velocity.

 

[paddy]

Hi,

Thanks for the reply. is it ok to knock the liners out this way or would i be risking the block?

thanks
Paddy.

 

[Renze]

No, its the only way. the liner guides are a cm thick or so.

 

[paddy]

Thanks again for the reply.

Have the liners knocked out and was plesently suprised how well it went.

do the seals just pul up past the top hole in the Block of do you have to remove the seals first?

 

[Renze]

I pushed them in from above, with the O ring on them. How much rust was inside ?

 

[paddy]

amazingly not much. around the inside of the block itself there was a good bit. had awfull trouble pulling the o rings past the top hole.
The new liners were a nice bit tighter than the old ones but as far as im aware thats normal.

found a broken ring in cylinder #1. It was broke in to three pieces!

The pistons were in good shape though.

not a bad job to do. Id happily do another one

Would the broken ring cause it to be hard to start?

 

[Renze]

Would the broken ring cause it to be hard to start?

Yes, definately.

When i rebuilt the 3011 i thought i overlooked something, because it still was hard to start. Found that a copper washer was missing on the backside of the pump, causing it to leak away the fuel for air.
I didnt take that off when rebuilding it, but when i decided to change the pump with a 4712, i saw a washer missing. With a washer, the 4712 started perfectly on that pump..

 

[paddy]

oh thanks thought it would make a difference alright.

Just while i think of it iv a brand new alternator ang the charge light wont go out? but it is chargin the battery

Any ideas to what causes this?

thanks again.