135 diesel leak

[hoff135]

Our 135 has been leaking diesel from the injector pump for a while, but getting bad now. Appears to be coming from round where the throttle actuator enters the housing. I'm not sure if I can dismantle it, and is there some sort of seal that can be replaced easily?

Thanks

 

[Mur Huwcun]

There’s a small o-ring on that shaft and the stopper shaft. You wil need to swap both and will need a top housing gasket. Close the fuel tap, remove the linkages and remove the two nuts holding the top cover on. As you lift it off you will see a linkage and spring inside.

The spring attaches both ends in three possible positions. Make sure you know which hole. The stopper also locates a pin into a curved fork. This will need to go back in the correct way. Ideally if you’ve not done one bwfore you need an old or spare pump on a bench to strip down and familiarise yourself with it.

 

[hoff135]

There’s a small o-ring on that shaft and the stopper shaft. You wil need to swap both and will need a top housing gasket. Close the fuel tap, remove the linkages and remove the two nuts holding the top cover on. As you lift it off you will see a linkage and spring inside.

The spring attaches both ends in three possible positions. Make sure you know which hole. The stopper also locates a pin into a curved fork. This will need to go back in the correct way. Ideally if you’ve not done one bwfore you need an old or spare pump on a bench to strip down and familiarise yourself with it.

Excellent thanks. I don't have an old pump, I'll look on YouTube see if there's any vids. If not I'll see if I can get help

 

[TheTallGuy]

Excellent thanks. I don't have an old pump, I'll look on YouTube see if there's any vids. If not I'll see if I can get help

Look up Bundy Bear on YouTube - he has a couple of videos on striping DPA pumps. Plenty of gasket/seal kits around from the usual suspects & flebay.

 

[Wisconsonian]

Pressure wash everything first. And take a picture or make a diagram of the spring holes, I think both ends of the spring have different hole options. That's the main thing to screw up.

 

[spanners and hammers]

repair kits less than £20 with all the o rings etc

 

[tomlad]

Bundy bear was my first thoughts
Utube
Very helpful guy .