Diesel injection pump tool

Hi - just putting finishing touches to a once decrpit '77 diesel SWB series 3. It's blowing lots of grey smoke, and quite underpowered so consequently I'm looking to reset the diesel pump/injector timing and need the corresponding special tool. Does anyone know another way to reset the pump timing without the tool? Or a place that sells them? Its the more recent type injection/distributor pump that's on the old warhorse.

Thanks for any advice on offer - Pat.

See today's post from me to someone else.

Same job - same suggestions.

CharlesY