VP DPH service

[timbad]

Hi there, does anybody have a full list of items required for the annual service for VP DPH outdrives?

And do you replace the prop nuts each time?

So far I have got:-


Qty Part VP Code
2 Cavitation plate anodes (zinc) 3588746
2 Bottom of transom anodes (zinc) 3588745
1/2 Bar anode dia 32mm? 3807400
2 Exhaust bellows 3588753
2 Drive bellows 3594509
Gear oil approx 2.7L each leg
2 O rings drain plug
2 O rings top plug 949656
1 Prop nut front 3863211
1 Prop nut rear 3863213

Regards
timbad

 

[volvopaul]

Hi you have nearly got it right apart from each drive has nearly 5.5 litres of oil, and you need to fill it in a special way so not to cause an airlock.

The drives are very heavy dont try it on your own, make sure you set the trim and steering indicators up before it goes back in the water.

 

[timbad]

Thanks Paul
Will not be doing it myself, a friend who is a marine engineer will do it I am getting the parts and being his grease monkey for the weekend.
Cheers
Timbad

 

[aquatom]

You don't always need new prop nuts. Occasionally the rear prop nut nylon insert gets damaged on removal and it's a good idea to replace this if in any doubt (those props are very expensive). As Paul says the oil needs to be filled correctly.

The exhaust bellows is not as important as the drive/uj bellows. I would only replace it if the old ones are damaged or the rubber has gone hard.

You will also need 10 of the stainless steel and two of the brass split pins (don't know the part numbers)

If your boat is med based you should check the clevis pins on the tie bar for corrosion and the steering ram seals.

 

[GrahamHR]

On big "Nyloc" nuts ( like used on the DPS and DPH drive propshafts), you can "rejuvenate" the self locking function using a centre punch on the nut; this compresses the nylon insert inwards, so it becomes self locking again.

Graham