Forum for air cooled diesel engines and clones

[ponytug]

Small town/city. Not much support. Local “Agents” unfortunately carry no stock! These prices are from the John Deere agency.

Also noted $970 for a original Yanmar fuel pump.

I will check out ebay. Might also get some Preparation H cream. Thanks for your prompt responses.

I think if you look up thread, the sizes are there. My recollection is that the diameter is the same, but the thickness varies a bit, with no explanation that I know of, other than tweaks to the compression. E.g. this seller who offers four different thicknesses.
Yanmar washer eBay

I think that the crush washers are 15x7x1.5mm, but I would measure yours. Amazon sells sets of copper washers that might be a low cost route.

I understand being "in the back of beyond". Mail order is a huge help to us here.

All the best,

Peter

 

[KangerooL48]

Update on Troubleshooting the starting/running issues with my L48 Yanmar.

Removed the injection pump and dissembled, cleaned and reassembled unfortunately didn’t seem to fix the issue. Borrowed a chinese replacement pump without the stop solenoid and that seems to have fixed the problem. Engine now starts easily and will run up to full speed.

Just spent he last few hours looking for a suitable replacement which has the stop solenoid. Every one I look at seems to have the fuel inlet on the wrong side. While the borrowed pump without the stop solenoid has the fuel inlet on the right similar to the original every aftermarket one with a stop solenoid seems to have the inlet on the left side. Any other members had a similar problem?

 

[ponytug]

Update on Troubleshooting the starting/running issues with my L48 Yanmar.

Removed the injection pump and dissembled, cleaned and reassembled unfortunately didn’t seem to fix the issue. Borrowed a chinese replacement pump without the stop solenoid and that seems to have fixed the problem. Engine now starts easily and will run up to full speed.

Just spent he last few hours looking for a suitable replacement which has the stop solenoid. Every one I look at seems to have the fuel inlet on the wrong side. While the borrowed pump without the stop solenoid has the fuel inlet on the right similar to the original every aftermarket one with a stop solenoid seems to have the inlet on the left side. Any other members had a similar problem?

I would call that progress!

The handedness of the solenoids seems to be defining design feature of the aftermarket solenoids. I've run into that with other L48 engines.

I think it comes down to buying the Yanmar OEM version, or changing the fuel line to the solenoid a bit.

Again, upthread, once I had mine running with a replacement, I carefully unscrewed the solenoid out off the pump (be careful as the actual threads need to be gripped, not the solenoid housing), cleaned the threads, and used a non-hardening diesel thread sealant to put it back together, and magically, the issue went away with the old pump.

N.B. If you do try to repair the solenoid on the old pump, the solenoids are usually constructed in such a way that the outer portion (the shell) of the solenoid housing is not strongly attached to the threaded portion that goes into the pump. So applying torque to the outer shell can shear the solenoid wires inside.

All the best,

Peter