Record the operating diagrams according to the instructions supplied with the stand, after completing at least 5 operating cycles, at a shock absorber operating fluid temperature of (20±5)°C, a flywheel speed of 60 min⁻¹ and a piston rod stroke length of 80 mm for the front shock absorber and 100 mm for the rear.
The curve of the diagram (Fig. 4-19) should be smooth, and at the transition points (from recoil stroke to compression stroke) - without sections parallel to the zero line.
Evaluation of results by diagram
The resistance of the recoil and compression strokes is determined by the largest ordinates of the corresponding diagrams.
The highest point of the recoil curve at a scale of 1 mm = 47 N (4.8 kgf) should be located from the zero line at a distance A equal to: 25-32 mm for front shock absorbers, 23.5-30.5 mm for rear ones.
(The original can be found on the website VAZBOOK.ru)
The highest point of the compression stroke curve with the same scale should be located from the zero line at a distance B equal to 3.5-6.5 mm for the front shock absorbers, 4.5-7.5 for the rear.
The control values of the ordinates on the diagrams of the front and rear shock absorbers are specified for cold shock absorbers at a shock absorber fluid temperature of (20±5)°C.
After checking, remove the shock absorber from the stand, overhaul it if necessary and replace damaged parts.
Repeat the tests to ensure the shock absorber is working properly.