Note. Washing time of sealing rings in isopropyl alcohol is not more than 20 s, followed by blowing with compressed air.
The cylinder mirror and the working surface of the pistons must be completely clean, free of rust, scratches and other defects. An increased clearance between the cylinder and the pistons is unacceptable.
Replace the seals with new ones each time the cylinder is disassembled, even if they appear to be in good condition
Check the elasticity of the piston spring, the length of which should be 36 mm under load 34.3+6,86 H (3,5+0,7 kgf), 21 mm under load 62.23+9,8 H (6,35+1,0 kgf), in the free state - 57.5 mm.