New Holland 7840 Injection Pump Rebuild Dephi CAV DPS Pump

Watch a Delphi factory trained technician from Diesel Performance Engineering take you through rebuilding an injection pump off of a New Holland 7840 tractor, also known as DPS or CAV pumps these were common on FORD/NH in the 90's. For parts or questions call Levi at 8163246680.

[@mattsimmons7605]

Really good video ! Help me just rebuild my pump.

[@markhill3695]

Hi Levi, I have a CAV DPS pump that is weeping fuel from the large O ring around the hydraulic head, in your opinion, would it be possible for me to renew this O ring by easing the head out just far enough to access the O ring, without upsetting the calibration of the pump and without parts falling out of place? I've rebuilt the old CAV BPF inline pumps before but not had much to do with the distributor pumps apart from re-bushing the control lever spindle in the top cover and changing the driveshaft oil seal. It looks like I can access the O ring by removing the metering valve, advance retard device, and the three retaining bolts for the hydraulic head. It's a 4 cylinder pump so the hydraulic head is the same diameter at both ends, by removing the delivery valves from the periphery of the head I could slide the new O ring over without stretching it. The pump is operating perfectly apart from this annoying weep of fuel. Thanks in advance, Mark.