Toyota 3b throttle linkage (1 Viewer)

[KIWIALEX]

Gday,

Is anyone able to post some detailed or close up photos of their throttle linkage on a toyota 3b with an inline pump

Cheers,
Alex

 

[-MaTTi-]

What you are looking after?

 

[KIWIALEX]

What you are looking after?
View attachment 3528820

Where on the inline pump does it go to

 

[duncanrm]

The throttle linkage doesnt go to the pump.. it goes to a butterfly on the air intake.. On a petrol car you'd call it a "throttle body". The 3B inline pump has pneumatic throttle control.

 

[KIWIALEX]

The throttle linkage doesnt go to the pump.. it goes to a butterfly on the air intake.. On a petrol car you'd call it a "throttle body". The 3B inline pump has pneumatic throttle control.

So the linkage only goes to the intake

 

[duncanrm]

So the linkage only goes to the intake

Correct.. and the intake has two hoses down to the governor housing on the rear of the injection pump. These two hoses deliver a differential vacuum that controls the position of the fuel rack.

 

[KIWIALEX]

Correct.. and the intake has two hoses down to the governor housing on the rear of the injection pump. These two hoses deliver a differential vacuum that controls the position of the fuel rack.

Oh cool.
Thanks

 

[bj70bc]

also, just to keep you up at night, inside where the two hoses from the 'throttle plate go to on the injection pump, there is a leather diaphragm that the differential pressure acts on and moves the fuel rack to determine fuel load, this leather goes bad after a while and needs to be replaced. It will crack and cause high idle and erratic throttle issues. So if this ever seems to be happening this could be a cause.
The pleasures of owning a 3b. Cattle power!

 

[KIWIALEX]

also, just to keep you up at night, inside where the two hoses from the 'throttle plate go to on the injection pump, there is a leather diaphragm that the differential pressure acts on and moves the fuel rack to determine fuel load, this leather goes bad after a while and needs to be replaced. It will crack and cause high idle and erratic throttle issues. So if this ever seems to be happening this could be a cause.
The pleasures of owning a 3b. Cattle power!

Already replaced the governor diaphragm before I put the engine in