1. Fix the indicator on the holder and install the measuring plate (refer to accompanying illustration).
2. Install in «0» indicator with 3 mm interference on the measuring disc 051. The height of the measuring disc 051 is adjustable.
3. Fit roller bearing outer race 46b to pinion inner race 47 and install magnetic disk 052c.
4. Insert the drive gear into the gauge plate and measure the height of the drive gear with tapered roller bearing and magnetic disk.
5. Determine the difference between «IN 1» and height «IN». Record the resulting value (e.g. 1.79 mm).
6. Read the main deviation «A» pinion gear («+» or «—») and write it down (e.g. +0.06 mm).
7. Depending on the prefix («+» or «—») the value for the pinion is plus (If «+») or taken away (If «-»).
8. Insert gauge 051 b into the gearbox housing. Screw it in.
9. Insert the left 052e from the outside in and the right 052d from the inside out of the measuring rings into the gearbox housing until it stops.
10. Insert the measuring device 052a with the measuring finger into the measuring device 052. The measuring finger is screwed into the measuring piece 052b.
11. Install measuring piece 052b in the measuring device and set the indicator to «0» with 2 mm tension. When tightening the bolt, the indicator should be in «0».
12. Insert a measuring device into the left hole in the gearbox housing.
051b - Meter
A1 - Distance between the regulator and the front side of the meter
B1 - Gauge height
M - Gear center
13. Measure the distance «A» between the regulator and the front of the meter and record the positive reading («+») or negative («—») direction (for example, received - 0.01 mm and negative direction). The positive or negative direction depends on the rotation of the indicator. Direction of rotation, from the neutral position, counterclockwise defines the negative direction, clockwise defines the positive direction.
14. Determine the gasket thickness:
distance between height «IN 1» and height «IN» = 1.79 mm + Basic deviation «A» drive gear 0.06mm = 1.85mm + difference «A1» between regulator and meter front 0.01 mm = Gasket thickness 1.86 mm.
15. Remove the measuring device and measuring rings from the gearbox. Remove the meter. Insert a spacer of a certain thickness into the gearbox.