Snapped pinion shaft

[rockspider]

Snapped spider gear pin

Hi,

I got slightly hung up on a soft sand mound and soon afterwards, experienced a sharp jerk similar to slamming the Gear Lever into Park while moving. This continued at short intervals and finally I lost rear wheel drive. Back at the shop they opened up the rear diff and saw the spider gear pin sheared. Can anyone advize on how to avoid this from happening again after I get it repaired.

1985 FJ 70
F3 Petrol/Gas
A/m

 

[rockspider]

Found this on another thread but not sure what it means

Found this on another thread but not sure what it means

i have seen many a pinion let go before the ujoints. usually the pinion was not set to proper tolerances i.e. too much back lash...

it looks like you may have a light spring pack

If you do its likely that your getting spring wrap under load.

 

[rockspider]

A pic

 

[lowenbrau]

That's just bad luck. I'll bet the keeper pin broke. It won't likely happen again. I've only seen this kind of thing happen a couple of times and both were installer error.

 

[rockspider]

Was considering going 4:88 for the impending lift and 35" tires anyway. Maybe this was a sign.

 

[camcruiser13]

Was considering going 4:88 for the impending lift and 35" tires anyway. Maybe this was a sign.

now you can justify it