Testing the telescopic strut and shock absorber on the stand (VAZ-1111)

To determine the operability of the telescopic strut and shock absorber, their operating diagrams are checked on a dynamometer stand. The operating diagrams are taken according to the instructions attached to the stand, after performing at least 5 operating cycles, at a working fluid temperature of (20±5)°C, a frequency of 60 cycles per minute and a rod stroke length of (100±1) mm.

Curve diagram (figure 100) should be smooth, and at the point of intersection (from compression stroke to rebound stroke) - without sections parallel to the zero line.



The compression and recoil stroke resistance is determined by the greatest efforts obtained when taking the diagram. The control values of efforts on the diagrams of the telescopic strut and shock absorber are determined at a temperature of (20±5)°C.

The highest point of the compression stroke curve at a scale of 47 N per 1 mm shall be located from the zero line at a distance B equal to (3±0.75) mm [(141.3±35.3) N] for the telescopic strut and (6±1.1) mm [(282.5±58.9) N] for the rear suspension shock absorber.

The highest point of the recoil curve, at the same scale, should be located from the zero line at a distance A equal to (9.5±1.1) mm [(447.3±58.9) N] for the telescopic strut and (17±2) mm [(800.5±94.2) N] for the rear suspension shock absorber.

After checking, remove the telescopic stand (shock absorber) from the stand and, if necessary, disassemble it, replacing damaged or worn parts. After assembly, repeat the tests to ensure that the rack is in good working order (shock absorber).