CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Gear Pattern Check (D60) Looking for help

coloradoblazers

1/2 ton status
 Premium
Joined
Mar 2, 2001
Posts
564
Reaction score
154
Location
WY
Any advice?
Inner Pinon Shim 0.45
Outer Pinion Shim 0.26
NRGS Shim 0.57
RGS Shim 0.85
Pinion Preload 20 ft/lbs
Backlash 0.006

D60 Gear Pattern Check 1.jpg

D60 Gear Pattern Check 2.jpg
 
Your pattern on the drive side of the tooth (first pic) is too far out from center and the pattern on the coast side is too far in. You'll need to add .003-.004" to the inner pinion shim (should be between the inner race and the housing) to push the pinion closer to the carrier. If the drive side pattern is too close to the carrier and coast side pattern is too far away then you would need to remove shims and move the pinion farther away from the carrier. When the pattern is in the same relative position on both drive and coast sides of the tooth then your pinion depth is right on.

When you get the back lash set then add about 2 thou of shims to both carrier shim packs to get your carrier preload where it needs to be. It's good to have 20-30 inlbs of preload on the carrier bearings and can be measured and calculated after it is assembled. Example: Your current pinion turning torque is 20 in lbs, if after assembly your turning torque is 25 in lbs (example only) then your carrier preload will be 5 in lbs multiplied by gear ratio say 4.56 (again, example only) which gives you a turning torque of 22.8 in lbs.

Hope this makes a little bit of sense and helps.
Chad
 
Try two:
Should I try to get the pattern more toward the root? I tried it with a pinion shim of .061, but the pattern was terrible.

D60 Gear Pattern Check 2 Drive Side.jpg

D60 Gear Pattern Check 2 Coast Side.jpg

D60 Gear Pattern Check 2 Reference Sheet.jpg
 
Top Bottom