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During the install, I remembered that "someplace safe" where I stashed the old pinion shims during my move. The shim pack including baffle was .039". That would have been nice to know! Here's why........ |
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Most/Many/Some pinions have a nifty number marked with a "+", "-" or "0". These numbers
indicate the best running position for the gear. This part is a little
confusing. A positive number indicates the number of shims that should be
REMOVED. Think of a one foot ruler that is
three inches too long. To fix it, you chop three inches off. Of course the
opposite would be true as well. If your ruler were -3, you'd add three
inches. The other significant number in this case 169 should have a matching number on the ring gear. This lets you know that these gears are a matched set. Buying used gears? I'd check that out! Unfortunately not all gears are marked. |
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My new pinion is a +6. Using the
information above, we can figure that we need .003 less shims than the
original + 3 pinion. ASSUMING the original gears were setup correctly, the following will be a very good starting shim pack. The original shim pack being .039, minus an addition .003 = .036" |
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If you're confused, refer to this chart which I copied from the Dana Service Manual. Take note that all possible combinations are not presented. |
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