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Pro Form Pinion Depth Set Up Tool
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Aside from the pieces included in the kit, you will need the
item displayed above. It is just a bolt and a nut which you
can pick up at any hardware store. It
is the same thread
measurement as the carrier bearing cap bolt but is shorter
by a few inches. The measurement is 1/2" coarse thread
and 1 1/2" long. This
will be the bolt that attaches the tool
to the center section.
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Pro Form Pinion Depth Set Up Tool. I have
numbered the pieces that attach the indicator
to the housing and will refer to those numbers
throughout the
instructions.
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- Place the nut on the collet and hand tighten.
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- Slide the dial indicator with 2" extension through the nut and collet. Hand tighten the nut so that the
indicator slides only under pressure.
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The dial indicator slid through the collet. The nut should be hand
tight so that the indicator only slides when pressure is applied
on it.
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- Calibrate the dial indicator with the 2" calibration tube. (This will be harder to explain than it is to
do.) Slide the indicator tip with extension
into the 2" calibration tube. Apply pressure so that piece
3 and the calibration tube are completely flush. The needle on the dial indicator should move as
the
extension bottoms out in the calibration tube. Slide the indicator up or down so that when the extension
bottoms out the needle rests about .010" to
.030" from where it rests when not bottomed out. With
everything held flush tighten the nut on the collet with a 5/8" combination wrench so that the dial
indicator
cannot slide up or down in the collet anymore. Holding piece 3 flush with the calibration tube, turn the
dial on the indicator so that the needle points to
zero when the extension is bottomed out. The tool
is now calibrated for the first measurement.
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The extension and indicator tip slid into the 2" calibration tube.
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Piece 3 held firm and flush against the calibration tube. Notice that the
needle on the dial indicator has moved about .010" froim where it rested
in the
picture above. This is good. Notice, however, that the needle does
not rest on the zero on the indicator dial. Tighten the nut so that the dial
indicator cannot be
moved up or down through the collet.
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The dial on the indicator is turned so that wherever the needle rests when
it is held flush against the calibration tube it is pointing to the "0." The tool
is now calibrated for the first measurement.
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- Attach the tool to the housing. Using the bolt pictured at the top of the page bolt piece one to the bearing
cap mating surface farthest from the pinion
on the left (the reason we use the extra bolt versus the bearing
cap bolt is because the cap bolt is too long.)
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- Using the wing nut attach piece number two to piece number one with piece number two going underneath
pice number one. This will be the platform that we
will use to rest piece number three and the dial indicator
on so that we can get a square measurement with the indicator.
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- The first measurement we will take will be of the bearing bore. Place piece 3 flush against piece
2 so that the tip of the indicator is resting in the
bearing bore. Slide the tool left and right and find the
point at which the moves the least. Read the needle on the dial indicator and record it. Then, take
that
number and subtract it from two. This is our first number we need.
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- Measure the carrier bearing race with a dial caliper. Take measurements at a few different points
so that you know your measurement is accurate.
Divide this number by two. Record the result.
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Carrier Bearing Race being measured by a
dial caliper.
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Page 2
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