Narrywoolan*

Differential - 2011

In December 2010 I had the pleasure of a visit from the UK, Aprilia owner and expert Ben Courage. While here he took the car for a short drive and commented there was far too much noise coming from the differential. So I will now have to pull it out again and, this time, set it up correctly! How hard can it be, having done it once already! Just a matter of getting some shims in the right place...


2015. Further work and another alignment were done, refer to the blog page for details:

Propelling group dwg
Propelling group dwg
Propelling group top dwg
Propelling group top dwg
TAV 18a
1st series up to construction number 3000
TAV 18a
1st series up to construction number 3000
TAV19a 
1st series up to construction number 3000.
TAV19a
1st series up to construction number 3000.
Shields instructions
Shields instructions
Out it comes - again! You could get the diff out without removing the whole assembly, but I had done it recently and access is much easier with it sitting on the bench.
Out it comes - again! You could get the diff out without removing the whole assembly, but I had done it recently and access is much easier with it sitting on the bench.
Brakes still have a way to go before they have bedded in.
Brakes still have a way to go before they have bedded in.
Semi-naked.
Semi-naked.
Spring compressor in action.
Spring compressor in action.
Casing halves separated.
Casing halves separated.
Crown wheel
(I’ve got a new digital camera!)
Crown wheel
(I’ve got a new digital camera!)
The 23 bolts and nuts that hold the diff casing together.
The 23 bolts and nuts that hold the diff casing together.
Peter Renou measuring tolerances.
Peter Renou measuring tolerances.
The master at work.
The master at work.
Applying gear mesh compound to check alignment of crown wheel and pinion.
Applying gear mesh compound to check alignment of crown wheel and pinion.
Drive side of gear. We only had to fit an extra 6 thou shim to get the alignment correct.
Drive side of gear. We only had to fit an extra 6 thou shim to get the alignment correct.
Overrun side. Pinion shaft set to average engagement of both sides.
Overrun side. Pinion shaft set to average engagement of both sides.
Need to replace the felt oil seals (38-32654) for the stub axles.
Need to replace the felt oil seals (38-32654) for the stub axles.
Modern oil seal and new spacer for the spring.
Modern oil seal and new spacer for the spring.
Modern seal fitted.
Modern seal fitted.
How the spacer goes.
How the spacer goes.
Made up a magnetic sump plug. Rare earth magnet to catch any metal particles floating around.
Made up a magnetic sump plug. Rare earth magnet to catch any metal particles floating around.
Assembled and ready to go back.
Assembled and ready to go back.
I’ve been very slack in not painting the assembly, I’ve had it out twice and not done it.
I’ve been very slack in not painting the assembly, I’ve had it out twice and not done it.
Aligning the lift.
Aligning the lift.
Set the ride height to 690mm (to inside top of rear guard)
Set the ride height to 690mm (to inside top of rear guard)