View Single Post
Old 06-12-2023, 12:41 AM   #4
Ironangel
Senior Member
 
Ironangel's Avatar
 
Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
Re: 12 bolt ring and pinion question

The pattern is not bad but could be better. You probably have a later model wider axle, measure your existing axles. Pinon bearing thicknesses were right around .030" and no it's not unusual to have to add .010". Unmolested later model carriers used one piece cast iron shims that were faced to fit, usually about .250" thick. Using the Yukon Supershim packs you can move the carrier towards the pinion to center the pattern on the ring. You didn't indicate the amount of shim you have under the pinion? Did you record the thickness of the existing shim(s) under the original pinion when you dismantled the axle? Pinion depth is a good reference but will vary depending on the pattern and pinion shim thickness. You have it very close, close enough to run but I'd try .050" less pinion shim which is .050" more pinion depth and shim the carrier away or to the left of the pinion and check pattern and backlash. Read the bottom of page 7... https://www.randysworldwide.com/web_...l_Complete.pdf
__________________
Michael of the clan Hill,
"Two Seventy Two's"
71 1-ton Dually 350 4-Speed
71 C/50 Grain Truck, 350 Split-Axle 4-Speed
02 3/4 ton Express
14 Indian Chief Vintage
1952 Ford 8N, "Only Ford Allowed On The Property"
"Be American, Buy American"
Ironangel is offline   Reply With Quote