Woooooo Hooooooo
While putting the driveshafts back on, LOTS of slop was found in the output shaft on the front diff for the left wheel (the short one). Turned out to be wear in the socket of the diff centre and the bearing on the end couldn't cope any more.
I swapped the front diff over from the donor truck. Went in a treat and looked lovely. Hooked everything up and drove the truck around (in 2wd).
This is where I stumbled across a piece of information that could have resulted in DISASTER, had I not been told, sometime after the next time I threw the stubby lever into anything starting with a "4".
Christian came around for a look and casually asked if the new diff was the same ratio as the old one.
"Errr??" I said (or something equally as smart). "There are different ratios??"
The new diff was the wrong ratio.
SO: Off with the driveshafts and out with the diff. Christian was really great and worked with me into the darkness to get a working diff sorted. I learned all about crownwheels, pinions, shims and backlash.
Cutting a long (L-O-N-G) story short - we swapped the crownwheel onto the good diff centre and put that into the housing that had the matching pinion. Reassembled it all and put it back into the truck.
It went to Pedders on Tuesday last week for a wheel alignment and one of their "Tech Check and Report" thingies. I had one done before I started (VERY sad and prompted this front-end rebuild) and it came back with a clean bill of health!
One thing that is a worry - The new tailshaft centre bearing I put in is already damaged. The "bumpers" around the edge have been torn, but the suspension between the centre steel collar and the outer mount is intact. I replaced the old one because it was worn, not wrecked.
I currently have no idea if this is a defective bearing or something more sinister. I'll take a look at that (and research this fantastic forum for clues) when I get a mo.
Big thanks to Peter & Christian.
I might drive it a little bit before doing any more. It occurred to me over the past week that I have done less than 200k's in it since I bought it and I need to increase that number a bit.....