Remove air valves.
Start the engine, then increase and decrease the crankshaft speed several times; using a piece of paper as an indicator, check that air is being drawn into the reed valve body.
Attention! Maintaining engine speed around 2500 min-1
, make sure that no exhaust gases escape from the valve body.
Pic. 14.32. Fastening elements of the plate valve of the PBT system: 1 - rubber seal; 2 - plate valve; 3 - cover
To remove the reed valves, disconnect the air hoses and remove the bolts securing the outer cover (pic. 14.32). Remove valves and rubber seals.
Installation is carried out in the reverse order of removal.