One tip if your not already aware, leave the injector lines attached to the pump for removal and install, it will make life easier. observe the timing pointer to the front pulley, as outlined in Picture 1. I imagine this thread may help others as these CAV DPA pumps are employed on so many older tractors.International 986 injection pump timing If you are looking for used tractor parts you. Anyway I may post an update when its all resolved. Probably a blockage in a gallery downstream of the MV.

I'm now almost certain the problem with mine is head related.

After watching them and referring to my own I really felt like I had a basic understanding of how it works. The old English CAV B&W one really is an excellent introduction, with lots of cutaways and nice slow explanations. Might be of use to others seeking to understand the workings of CAV rotary pumps. I looked at quite a few before I settled on these as being the best for a layman. From the feedback I've received from a couple of suppliers it seems that PN is becoming a bit rare, so if I can source a 2nd hand spare in reasonable order, I might just do that.īTW I've attached a couple of excellent video links here. Nice to know another manufacturer used it too. Yes that FIAT PN is confirmed from the service manual. A bit more fuel on the hills when pulling a load might be nice. Indeed that's a useable option with minor tweaking.

Thanks TPG, that's great info on the timing etc. I'm still thinking it must just be something jammed in a gallery or whatever, as it worked so well beforehand and nothing looks worn out etc inside. I have both 19 FIAT service manuals and both list the F150.Īnyway I'll have a chat to the local shop on Monday and see what they think. Call me a chicken, but without a CAV DPA document saying so I'm not putting down that kind of money. They look the same and are on almost identical motors. One Italian website selling pumps says that suffix fits a later 780 and early NH. However they are listing one for my FIAT 780 has a different suffix, which made me wonder if Delphi have a cross reference table for their pumps? Mine is an 3342-F150 and their listing for a FIAT 780 is an 3342-F570. In business since the 1930's so should know a thing or two.Īlternatively another old CAV repair shop in the next state over is selling reconditioned ones (with new heads), for around $900 USD. Options wise I have found a FIAT/NEW HOLLAND dealer recommended CAV repair shop about 40 mins from me, to look at my pump. Timed the engine to TDC and removed the little cover and took a photo of the timing letter next to the circlip before I removed the pump. Thanks, unfortunately STAR don't list one for my model.

Cav dpa 3916523 manual