Renault 551 - Need help setting the diesel injection pump timing - instrctions

Hello Nick N, how are you doing this Friday 16th of November?

First, did you notice the timing marks on distribution gear wheels? Put them in line. Then, turn axle of pump so the key will fit in it's proper place of gear wheel. At last, mount injection pmp between the scratches in the paint on the engine block.

I found some documentation. However it is MASSEY-FERGUSON/PERKINS, it is a same 3-cilinder engine and also CAV/ROTODIESEL injection pump.

annatefka.com/perkins/folders/…

(Click [NEXT] or [PREV.] on top corners of your screen to see next or previous page).
Happy future!

Hi Wimsumar,

Thank you so much for your help. Unfortunately we don't have any scratched marks on the engine block, so it'll be a guess to start with. I'm really looking for the manufacturer specification for the MWM D226.3 timing instruction to suite the Roto diesel cav pump. Im paying a mechanic to do the job so I really need to get it right so It doesnt cost me a lung Thanks again, Nick.

This is what the inspection window looks like. It doesnt have a start and finish line. It has a raised ring that sits above the E when you turn the pump. Does this indicate the correct position for setting the timing? And where does the engine need to be, cylinder 1 TDC? Thanks guys.

Thanks for the documents, might have to brush up on my French. I know that the inspection window needs to be closed, I was just wondering if I need to align the letter E that’s seen in the photo, to set the timing as a starting point? And what position does the engine need to be? Thanks guys!

Thanks Wimsumer. Unfortunately there are no timing marks on the flange. The mechanics concern is that the pump has 3 possible installation combinations. So it can go wrong. And the diesel injection shop is saying the same thing, that’s why they are all suggesting some manufacturers timing instruction for the mwm d226.3 and roto diesel cav injection pump. Thanks again for your help.

Thanks Wimsumer. So the letter E in the window is top dead centre?

I think he’s concerned because the pump has 3 holes that mount to the gear in the case. This is where I think it can go 3 ways.

I’m sorry I don’t have a photo of the gear but I think it has a flat face, so it can mount incorrectly.

Hi Winsumer. Exactly, it just won’t start! Need it to start man. I think I’ll just get the mechanic to have a few goes and just get the old girl going!! Thanks again for your help!!

Thanks again Wimsumar! I'll definitely look into those manuals.

Hi Wimsumar. I’ve made contact with the ATR web site and provided my tractors engine number for reference. Unfortunately all manuals they have are French. I haven’t heard back yet. I’ve also asked the question on their forum, no replies just yet.

That German manual, I’ve had a copy of already. Does give specific settings for the injection pump timing and what page is it on. Try to narrow down the translation.

Thanks again, I appreciate your time and help very much!

I wasnt really sure I posted correctly, google translate doesnt always work
atr-agri.superforum.fr/privmsg/…

Hi Wimsumar, I found this online from a German site.
Do you think it will contain the information I need?

motorbooks.at/catalog/product/…

Wimsumar,

Christmas came early this year.

vieilles.soupapes.free.fr/?page=moteur&marque=MWM

Ha! Thanks Wimsumar.

I was hoping lining up the letter E through the inspection window along with setting the engine to correct position would do the trick? If we can confirm this we can rock n roll.

Basic rule to mount a CAV DPA pump:
First cilinder on Forderbegin,ca 20 dgs before TDC (end of compression stroke).
pressurise the fuelline for the first cilinder on the pump with a injectortester or simular tool.
The pump wil rotate to the Forderbeginn position.
if you look through the inspection hole you will see the marking for that particular cilinder.
Align the circlip in the housing with the mark, if it already hasn't.
Mount the pump.
rotate the engine and check the timing, adjust if necessary. Check it again.

fujiyachts.net/manuals/…

Hi guys,

Thank your for that description and link. So pressuring the line will set the pump into correct position. Thats great, thank you for help.

Hi Wimsumar,

I have a photo here from a slightly different mwm engine but the gearing looks the same. The tractor is at a different property, in the outback. Cant take photos without getting off the beaten track.