Feature

●FITMENT: Works on most differentials, such as compatible with GM 10, 12, 14 bolts, compatible with Ford 7.5" 8" 8.8" 9", compatible with Dana 30, 35, 44, 50, 60, 70, 80, Compatible with Chrysler 10, 12 bolt, and compatible with AMC 8 bolt.
●PURPOSE: 11001 Pinion Depth Check Kit is a very accurate way to set the pinion depth in a large number of automotive differentials. This tool is capable of measuring many other differences that you may only need with a hub.
●QUALITY: Made of high-standard Aluminum Alloy and Steel, high precision, durability, corrosion resistance, wear resistance, strong and durable, long service life.
●KITS INCLUDE: 1" Travel Dial Indicator; Three Extensions with Calibration Tubes; Two Pair of Hubs with Three Diameters; Two Target Plates; Precision Ground Cross Shaft; Carrying Case with Foam.
●ATTENTION: In order to reduce the measurement error and make measurement result more accurate, please carefully clean all parts before starting calibration. Any dirt will prevent a correct calibration.


Description

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CALIBRATION

Note: Each of the three included calibration tubes is calibrated and sealed for each application. Before attempting calibration, carefully clean all parts. Any dirt can prevent a correct calibration.

1) Insert the Dial Indicator into the Cross Shaft with the Dial Indicator on the rounded side of the shaft and tip extending thru the flat area on the opposite side. Snug the setscrew making sure not to over-tighten.

2) Remove the Indicator Extension stored inside the appropriate Calibration Tube and screw the extension tip into the Dial; Indicator until snug.

3) Hold the Cross Shaft and indicator assembly with the indicator tip pointed up. Slip the calibration tube over the tip ans allow the tube to rest on the flat area on the cross shaft.

4) The thousandth (long arm) pointer should rotate clockwise slightly (about 0.020") and be pointed approximately straight down, or in the 6 oclock position. If the pointer does not point straight down, loosen the set screw in the cross shaft and raise or lower the indicator until the needle is pointed straight down with the calibration tube in place. Tighten the setscrew until snug (excessive tightening will lock the indicator shaft or permanently bend the housing) and make the pointer remains pointing straight down.

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NOTE: Be sure that the short pointer (small dial) is in the "zero" position.

5)Loosen the indicator bezel lock screw and with the calibration tube in place, make the final adjustment by rotating the dial face until the zero aligns with the pointer. Tighten the indicator bezel lock screw. Your Pinion Depth Checker is now set and calibrated for a depth of exactly 3.375" (Or 1.900" for the Ford 9" or 2.500" for the intermediate differentials). This is the CALIBRATED DEPTH.

MEASURING PINION DEPTH

1) Clean the carrier bearing housing and caps to advoid any inaccuracy.

2) Make note of the pinion depth inscribed on your pinion gear.

3) Place the pinion in the case with the appropriate bearings and shims.

4) Clean the appropriate Target Plate and the face of the pinion gear and then place the Target Plate on the face on the pinion.

5) Select the appropriate hubs and lightly oil the bores to prevent galling and carefully insert the Cross Shaft into the Hubs. Place this assembly in the case and tighten main cap bolts to 25 ft.-lbs.

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NOTE: The "A" diameter has a machined flat to clear the pinion support in Ford 9" rear ends. Additional relief may be needed for individual applications. When using the "A" diameter in Dana 60s, the machine flat should be positioned at 90 degrees to the cap parting line.

6) Slide the Indicator and Cross Shaft as close as possible to pinion gear, minimizing any overhang of the Target Plate. Be sure to retract the indicator plunger shaft just enough to clear the Target Plate to prevent bending the indicator.

7) Make sure the Indicator shaft end is seated on the target plate and note the reading on the dial. Multiply the small counter number by 0.100" and add the thousandths pointer reading to get your INDICATOR READING. Subtract your INDICATOR READING from the CALIBRATED DEPTH (3.375 for the long calibration tube, 2.500 for the intermediate, and 1.900 for the short) and you will have obtained your MEASURED PINION DEPTH.

Example: If the reading on the indicator were 0.778" (seven complete revolutions plus reading), subtracting from 3.375 would equal 2.597". This is the MEASURED PINION DEPTH.

NOTE: To minimize error, rotate the pinion gear to at least four different positions and average the three most similar readings.

8) Compare the MEASURED PINION DEPTH to the Pinion Depth number inscribed on the pinion gear or obtained from the OEM Gear Section to determine the amount of shims to be added or removed.

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