I am getting to the final stages of setup and assembly on a 1922 open spool rear end and driveshaft.Would like to know what the best clearances to set up and look for.End float of carrier in axle housings,ring gear and pinion backlash,axle shafts end float,axle sleeve bearings to Hyatt bearings.Will be using a adjustable open spool bearing assembly,new driveshaft and bushing,new ring and pinion,new axle shafts,new bronze thrusts and steel washers.My Hyatt bearings measure .4985-.499.What was new ,and what are good measured bearings-am using new sleeves from Langs with neoprene inner axle seals.Any mods needed there either!Lets do it right the first time!!Thanks kindly in advance to those that reply!
Hay Thomas! the guys on this forum can give you a lot of help but i also bought a front and rear axle repair manual by Glen Chaffin. this book will answer a lot of questions
Sounds good on your hyatt bearings, put the .499 toward the outside. You only have alittle over a thou from standard. KB
Ken is correct. It's all in the book. BUT ditch the stock pinion bearing setup and use the Fun Projects version.
The first Model T parts every new owner should buy are these:
Thomas I suggest the following numbers as guides:
Carrier side to side clearance. Roughly .005", enough so there are NO tight spots when the ring gear is turned.
Ring and pinion lash. Should average about .012. It will vary some as you measure it at different spots.
Axle shafts about .002. Its been my experience that you have to use Hyatt bearings about .492-.495 diameters to fit the new sleeves without binding.
Steel washers. Thickness not important since you will be machining the bronze washers to fit. See side to side clearance above. Be sure the steel washer are flat and not dished and the diameters are the same all the way around.
Driveshaft brass bushing about .002 both radial and thrust clearances.
I also check the carrier to make sure the outer sides are perpendicular, check the RE housings for straightness, most are not.
Good luck.