Thread: Transfer box drops into neutral

G'day Colin,

Don't think its an alignment problem. However as a last resort you can use gear paste on the gears to see the contact pattern. The High speed gear on the main shaft has some end float but not enough to disengage the dog teeth.

I'm with you and also would have ordered new spring and plunger.

However, being some things Landrover the selector folk does move axially on the selector shaft before you tighten the fixing bolt. Maybe the fork is fully engaging the dog on the High speed gear but not allowing the plunger to fully lock the shaft.
Just a few thoughts.
Chris

Originally Posted by Busted Syncro

G'day Colin,

Don't think its an alignment problem. However as a last resort you can use gear paste on the gears to see the contact pattern. The High speed gear on the main shaft has some end float but not enough to disengage the dog teeth.

I'm with you and also would have ordered new spring and plunger.

However, being some things Landrover the selector folk does move axially on the selector shaft before you tighten the fixing bolt. Maybe the fork is fully engaging the dog on the High speed gear but not allowing the plunger to fully lock the shaft.
Just a few thoughts.
Chris

Thanks Chris,
I was trying to remember how the selector was 'set up', I might have to re-visit this once I've tried the new spring & plunger.



Colin

I think there are two or three possibilities here, apart from the spring and plunger.

Firstly, something stopping full movement of the lever - for example the floor, due to possibly loose engine mounts of distorted floor panels, secondly the selector fork loose on the selector shaft or the nut on the front of the selector shaft loose, and thirdly, lack of preload on the output shaft bearings, allowing the shaft to move longitudinally. Could also be missing or badly worn thrust washer in front of the high gear or the circlip holding the front bearing come out.

John

Originally Posted by JDNSW

I think there are two or three possibilities here, apart from the spring and plunger.

Firstly, something stopping full movement of the lever - for example the floor, due to possibly loose engine mounts of distorted floor panels, secondly the selector fork loose on the selector shaft or the nut on the front of the selector shaft loose, and thirdly, lack of preload on the output shaft bearings, allowing the shaft to move longitudinally. Could also be missing or badly worn thrust washer in front of the high gear or the circlip holding the front bearing come out.

John

John,

First thing I checked was the floor in case it restricted movement, pre-load was OK when I rebuilt the box as to the other items you mentioned... I'll add them to the check list.

Thanks,
Colin