6.2.11.1. Dismantling

Uncover and take the mesh filter from a tank of the main brake cylinder.

Turn off the screw of fastening and remove a tank.

Remove two sealing rings.

Establish the cylinder in a vice.

Using a screw-driver, push pistons on all course, unscrew a lock bolt and remove ring consolidation.

NOTE Wind a screw-driver with a plaster or a sticky tape not to damage pistons and a cylinder mirror.

Fig. 6.33. Removal of a spring ring

Press the piston a screw-driver and by means of tonkogubets for removal of spring rings remove a spring ring (fig. 6.33).

Fig. 6.34. Extraction of the primary piston with a spring

Turn off a lock piston bolt with laying and take the primary piston with a spring, extending it it is strict on an axis without distortions (fig. 6.34).

NOTE If the piston to take at an angle, it is possible to damage a cylinder mirror.

Fig. 6.35. Extraction of the secondary piston

Put a rag on two wooden whetstones and easily strike with a cylinder flange on whetstones while the secondary piston will not come to light. Be convinced that distance (And), specified in drawing 6.35, from a rag to top of whetstones – not less than 100 mm.

Be convinced of lack of a rust and scratches on a cylinder mirror.

Be convinced of lack of wear and cylinder damages.

If it is necessary, replace the cylinder.

ATTENTION Replace all details, in the repair kit, used for service of the main brake cylinder.

At installation grease rubber details with pure brake liquid for simplification of assembly. Do not use the production compressed air for drying and cleaning of details of the brake mechanism. It can damage rubber details. If any detail of hydraulic system is removed or disconnected, completely pump over brake system.

Perform all repair work on a pure workbench.