Hello and a little advice if possible (again) please. Just doing a rebuild on my LT76 prefix A box.
New bearings in the bell housing and now checking for any endfloat in the layshaft.
Using the existing layshaft with new primary pinion and constant gear.

Firstly
I need to confirm which way around the constant gear goes, the Land Rover parts manual
seems to clearly show the protruding part of the gear facing the front of the vehicle whilst the repair manual seem to show it facing backwards (Haynes is unclear but seems to show both).
I'm thinking that the protruding part should face the rear of the shaft is this correct?

Secondly.
With any distance piece and the gear on the layshaft the shaft does not protrude all the way through the bearing in the bellhousing , is this correct?

Many thanks in advance.
 
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This rings a bell, at least one of the sources of info is wrong. I put the two shafts with the gears on vertically on a work bench (with a hole for the shaft) and made sure all the gears lined up and meshed and went through each gear. Found several errors.
 
This rings a bell, at least one of the sources of info is wrong. I put the two shafts with the gears on vertically on a work bench (with a hole for the shaft) and made sure all the gears lined up and meshed and went through each gear. Found several errors.

Well having floated around in the pool with several beers I think I understand this a bit more. Yes the sources contradict each other and I still am not 100% sure about the constant gear but am 90% sure it goes with the protruding part facing backwards.
The reference to the endfloat that was confusing me seems to be to the earlier shafts with separate gears.
HOWEVER, with the bell housing assembled to the gearbox housing how do you assess the correct distance piece to use
on the layshaft?
 
Hello and a little advice if possible (again) please. Just doing a rebuild on my LT76 prefix A box.
New bearings in the bell housing and now checking for any endfloat in the layshaft.
Using the existing layshaft with new primary pinion and constant gear.

Firstly
I need to confirm which way around the constant gear goes, the Land Rover parts manual
seems to clearly show the protruding part of the gear facing the front of the vehicle whilst the repair manual seem to show it facing backwards (Haynes is unclear but seems to show both).
I'm thinking that the protruding part should face the rear of the shaft is this correct?

Secondly.
With any distance piece and the gear on the layshaft the shaft does not protrude all the way through the bearing in the bellhousing , is this correct?

Many thanks in advance.
the protruding part faces into the box the spacer sits with the taper facing the bearing then gear sits on that,you fit bellhousing with the gear held there ,layshaft shouldnt protrude completely through the bearing other wise shaft wouldnt be held tight in the bearing,theres no endfloat in the layshaft once the bolt is tight the thickness of which there are 3 is to ensure layshaft seats in rear bearing ok,the bolt benefits from some loctite, you can see how the rear bearing is seated by looking through the 2 holes that are for removing the bearing race
 
the protruding part faces into the box the spacer sits with the taper facing the bearing then gear sits on that,you fit bellhousing with the gear held there ,layshaft shouldnt protrude completely through the bearing other wise shaft wouldnt be held tight in the bearing,theres no endfloat in the layshaft once the bolt is tight the thickness of which there are 3 is to ensure layshaft seats in rear bearing ok,the bolt benefits from some loctite, you can see how the rear bearing is seated by looking through the 2 holes that are for removing the bearing race

OK thank you, so I have the.405" distance piece (528720) and the .445" distance piece (528722)
With the gearbox housing and bellhousing pushed (by hand) together I have movement with the thinner distance piece and none with the thicker one but the lay shaft still turns easily. So I am guessing that with the bolt/washer tightened up and
allowing for the gasket the thicker one should be OK or do I have to take a feeler reading?
 
usually the one that was fitted to the box is the one to use ,what you are checking for is that the layshaft isnt pushing hard against the rear bearing and isnt too far forward so not fully seated in the rear bearing
 
Well that would be the thinner one, but I have multiple gaskets so I am quite happy to tighten it up and give it a try.
As I have a new constant drive gear on the layshaft this could have changed.

As it's not a taper bearing I guess I have a LITTLE leeway.

Many thanks
 
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