1. Fix the indicator to the clamp and install the measuring plate (refer to the accompanying illustration).
2. Set the indicator to "0" with 3 mm tension on the measuring disk 051. The height of the measuring disk 051 is adjustable.
3. Install the outer ring of roller bearing 46b on the inner ring of drive gear 47 and install magnetic disk 052c.
4. Insert the pinion gear into the measuring plate and measure the height of the pinion gear with tapered roller bearing and magnetic disk.
5. Determine the difference between the height "B1" and the height "B". Write down the obtained value (for example, 1.79 mm).
6. Read the basic deviation "a" of the drive gear ("+" or "-") and write it down (e.g. +0.06 mm).
7. Depending on the prefix ("+" or "-"), the value for the drive gear is added (if "+") or subtracted (if "-").
8. Insert the 051 b gauge into the gearbox housing. Screw it in.
9. Insert the left 052e from the outside inward and the right 052d from the inside outward measuring rings into the gearbox housing until they stop.
10. Install measuring device 052a with measuring finger into measuring device 052. The measuring finger is screwed into measuring part 052b.
11. Install the measuring part 052b in the measuring device and set the indicator to "0" with a 2 mm interference fit. When tightening the bolt, the indicator should be at "0".
12. Insert the measuring device into the left hole in the gearbox housing.
051b - Measuring instrument
A1 - Distance between the regulator and the front side of the meter
B1 - Height of the measuring device
M - Gear center
13. Measure the distance "A" between the regulator and the front of the meter and record the reading with positive ("+") or negative ("-") direction (for example, received - 0.01 mm and negative direction). Positive or negative direction depends on the rotation of the indicator. The direction of rotation, from the neutral position, counterclockwise determines the negative direction, clockwise - the positive direction.
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14. Determine the thickness of the gasket:
Distance between height "B1" and height "B" = 1.79 mm + Basic deviation "a" of the drive gear 0.06 mm = 1.85 mm + Difference "A1" between the adjuster and the front side of the gauge 0.01 mm = Thickness of the shim 1.86 mm.
15. Remove the measuring device and measuring rings from the gearbox. Remove the measuring device. Insert a gasket of a certain thickness into the gearbox.