Trash Stator/Alternator or reusable?

Ok sounds good. Thanks again

 

Question gentlemen. I want get new Middle gear pinion shims. I have the originals but they rusted. they read .15 and .50. The manual say to use a dial indicator and some brain effort with the lower 4 numbers on the case. I dont have a dial indicator because well i honestly have no clue how to use it. Just wondering if i could just buy new shims the same size as the originals and it be ok.

 

not the ideal situation , but yes you can just go with what sizes you have.

you can read about it in the xj4ever catalog
XJ PARTS CATALOG, SECTION H: CLUTCH, TRANNY, DRIVETRAIN (xj4ever.com)

 

Rusty shims should not be an issue, just scuff them with some scotchbrite or very fine sandpaper and jam them back in place........

 

While that will work it's not a guarantee that the gear lash will be set correctly, unless the cleaned-up shims have been measured to ensure that they are still of the correct thickness.

@Rubodee83 Measuring the shims canbe done well enough with a cheap set of calipers. A micrometer would be preferable, but calipers will do. When cleaning the rust off use finishing paper that's been taped to a flat surface, and move the shims ina figure-8 to clean them up. Use a splash of water to help the shims slide evenly and keep the paper clean.

 

Correct, the only way to determine that is to follow the measuring procedure in the service manual, which requires the use of a dial indicator, etc. It's my understanding that.....just like with valve shims.....the shims do not actually wear thinner, but other components change dimensionally, requiring re-shimming to compensate for such wear. But I may be wrong.

 

it is one of those things that while your in there you may as well make sure its correct,

 

Youre right, but it takes a really long time to need to reshim a gear that runs in an oil bath. My concern about reusing rusty shims has to do with the amount of rust, that rust takes up 30% more volume than the parent steel, and removing rust can change the thickness of a shim.

The determining factor for me has always been how much rust, and where it is.
Rusty edges? No worries, just clean and reuse.
Light film of rust on the flats that canbe rubbed off with my thumb? Scothchbrite and reuse.
Bumps or pits? Wet-sand and measure as long as there are very few pits.
Any flaking? Junk.

 

The edges are kind of flakey. They fell out of place when pulling the housing out during tear down. I’ll have to clean them up more to see if there are any pits and measure them.

 

Also during the tear down this was on the outside of the bearing closest to the 5th gear. Not sure what it is but seems like an oil seal. Looking at the exploded view of the parts i can’t find it in the manual.