24
Maintenance
7.3 Cleaning or changing the silencer
The silencer is a nozzle 44 inside the pump housing and cannot be altered; when dirty it
should either be cleaned or replaced.
Dismantling
Unscrew 2 cheesehead screws 182 from the gas ballast valve housing.
Remove the gas ballast valve housing 42 from the casing; taking care with O-ring 148.
Unscrew silencer nozzle 44 and O-ring 138; clean it and replace if necessary.
Fig. 14: Gas ballast valve with silencer
42
Gas ballast valve housing
44
Silencer nozzle
138 O-ring
141 O-ring
148 O-ring
148
42
182
44
138
138
141
