JCB 3C governor

[Pmoore]

I have an 86 JBC 3C whose governor doesnt work after i removed the pump cover to replace the seals. What have i done wrong. Everything seems to be in place.
It starts easily and revs on the throttle but will not hold engine speed under load.

 

[agrimax]

Do you really mean a '76' 3C? Should be a CAV DPA inj pump? Are you certain you put the governor spring back in the right hole?

 

[Mursal]

Or is the governor connected to the inlet manifold with two pipes?
Fordson Major engine ...........

 

[Pmoore]

Do you really mean a '76' 3C? Should be a CAV DPA inj pump? Are you certain you put the governor spring back in the right hole?

Not sure. How do I check correct hole.

 

[agrimax]

Over 2 years later???
When I think about it,it could actually be an '86 JCB 3C........which would have a Perkins engine. Wouldn't be many about if it is!
Or is it a '76 3C with a Leyland 4/98 engine? Same pump type anyway.
Under the pump lid,to lift it right off,you would have disconnected a spring from between the stop lever and a pin that goes through a hole in a flap. There are 3 holes in the flap that the pin can go through. It must be replaced in the hole it originally came out off. Usually the middle hole but not necessarily. The flap must also be very free to move.
Wonder too if it's just not getting enough fuel under load. Did you clean the plastic filter gauze in the fuel inlet end of the pump?

 

[TripleSix]

Over 2 years later???
When I think about it,it could actually be an '86 JCB 3C........which would have a Perkins engine. Wouldn't be many about if it is!
Or is it a '76 3C with a Leyland 4/98 engine? Same pump type anyway.
Under the pump lid,to lift it right off,you would have disconnected a spring from between the stop lever and a pin that goes through a hole in a flap. There are 3 holes in the flap that the pin can go through. It must be replaced in the hole it originally came out off. Usually the middle hole but not necessarily. The flap must also be very free to move.
Wonder too if it's just not getting enough fuel under load. Did you clean the plastic filter gauze in the fuel inlet end of the pump?

I guess we'll have to wait another 2 years for the next answer...

 

[Pmoore]

Over 2 years later???
When I think about it,it could actually be an '86 JCB 3C........which would have a Perkins engine. Wouldn't be many about if it is!
Or is it a '76 3C with a Leyland 4/98 engine? Same pump type anyway.
Under the pump lid,to lift it right off,you would have disconnected a spring from between the stop lever and a pin that goes through a hole in a flap. There are 3 holes in the flap that the pin can go through. It must be replaced in the hole it originally came out off. Usually the middle hole but not necessarily. The flap must also be very free to move.
Wonder too if it's just not getting enough fuel under load. Did you clean the plastic filter gauze in the fuel inlet end of the pump?

Thanks. Yes I have been using it for 2 years without a governor. I did put the spring in one of the holes but couldn't remember which one. I'm fairly sure that it is an 86 with the reverser with the big lever.

 

[Pmoore]

295805/P is the serial number.