Testing Oil Pump on PRM Gearbox

[fisherman]

Looks to me like the splines in the drive plate have stripped due to not being properly engaged, (seen this before) and if you can get the gearbox and drive plate closer together, so the splines are totally engaged you will be back in business. However, this is not a bodge job, as others have said above. It does look very much as if the drive plate has been fitted the wrong way round. Otherwise find out if there is a better drive plate to be had.

 

[fisherman]

Looking again at the pic, as you do at 5 am, my drive plate is nearly as big as the flywheel: is it possible that yours is, and is held on with those six bolts round the outside? It doesn't quite look that way, but if so then a distinct possibility it can be reversed.

 

[NorthUp]

Looking again at the pic, as you do at 5 am, my drive plate is nearly as big as the flywheel: is it possible that yours is, and is held on with those six bolts round the outside? It doesn't quite look that way, but if so then a distinct possibility it can be reversed.

You may well be right there, Fisherman- but Nashy will have to check the plate for a rotation arrow to allow those springs to compress under load.

 

[fisherman]

You may well be right there, Fisherman- but Nashy will have to check the plate for a rotation arrow to allow those springs to compress under load.

Yes. The bolts are where a clutch would be fitted if this were a road engine. Are we looking at the face of the flywheel or the outer part of the drive plate?

 

[sneil]

Looking at that photo I would try and undo those outer bolts and remove the hole plate, agree with fisherman it may well be the outer plate is part of the set up if so it was badly fitted from the start and all the more reason to replace if you reverse you may well find it will bind on the gearbox spline before the housing is full engaged to the engine. The new plate will have direction of rotation on it so many different types of plate now, in my younger days they wear all spring but plastic is now widely used on some makes. Do you know who Marinised the engine it will help in sorting the correct plate.

Good luck and measure 3 times before ordering bit like drilling a hole a pain in the but if you get it wrong postage not cheap to be sending things to and through, when you refit use a good locking fluid on all the threads except the bell housing bolts.

Steve