Pug 106 TUD5 diesel pump timing

Do you mean I CAN be out 180deg? Is there anything I can do to check this? or do I have to just try it?

looking at the pump pulley, there are three bolts and two holes

the two holes (with one bolt between) are positioned to the right of centre, the one o'clock hole is the one to use . So looking at all it in the right place, from 12 o'clock going clockwise is pin in hole (1 o'clock), bolt (3 o'clock) , unused hole at just after 6.30 o'clock, bolt at 8 o'clock, bolt at 10.30

you need the timing pin for the flywheel, and the camwheel too

mrcheerful

Thats great, thanks for the info :) Any advise on Duncanwood's post? The pump needing 2 revolutions to complete 1 cycle..... How do I know if I'm at the start or the middle of the cycle?

Thanks

Steven

it doesn't make any difference, the pump (and cam shaft) turns one turn for every two of the crank. there is only one cam position one crank position and one pump position. put them all together with the belt and it will work. (this is because the piston has to come to the top twice to complete one 'cycle' of the engine)

mrcheerful

No, the pump only turns once for every two engine revolutions so you can't get that wrong.

Ahh the penny has dropped :)

Thanks for your help again :)

I'm sure I'll be back with more questions before it's done!

Steven

Thanks for the confirmation - Duncanwood just posted saying simmilar.

How far away from March in CAMBS are you? you may hear the whooping if i get the thing to turn over & start :)

Steven

Too close, keep the noise down, please.

mrcheerful

That's far too close for comfort :-)

You cannot do any damage with the pump iming out. But you must ensure cam/crank shafts are correct or you will damage the valves and possibly pistons.

so by having the pump half a revolution out, he is injecting to cylinders 2 and 3 instead of 1 and 4 and vice versa The engine turns twice to the pump turning once, but the pump does not inject at the top of the exhaust stroke, only at the top of the compression stroke. Your assumption is that the pump fires twice per revolution. The pump has a larger pulley so it only revolves once per two engine revolutions, hence he could be 180 degrees out.

but the valves will not correspond to the pump if it is not set correctly.

But you can't get the timing pin in 1/2 a revolution out.

Thats what I thought :)

If you look later on in the thread, mrcheefull explaines which hole is the right one to use. So all should be ok!!

I would have had a go at timing it up and turning her over this weekend - but it was freezing out!!

Thanks for the input.

Steven