PARK AND EMERGENCY VALVE MAINTENANCE - CONTINUED
Remove plug (13) and elbows (6 and 8).
Remove tee (9) and elbow (7).
Remove two screws (10).
Remove brake pneumatic valve (11) and gasket (12)
from park and emergency valve (4). Discard gasket.
CLEANING AND INSPECTION
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low toxic
material. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. Use a maximum of 30 psi (207 kPa) when cleaning compo-
nents. DO NOT direct compressed air against human skin. Failure to follow this warning may cause
injury or death. Make sure air stream is directed away from user and other personnel in the area. To pre-
vent injury, user must wear protective goggles or face shield.
Remove all gasket material from mounting surfaces.
Ensure threads of pipe connection are clean.
Clean all parts with solvent cleaning compound.
Dry parts with compressed air.
Inspect all parts for damage and replace damaged parts as necessary.
Apply anti-seizing tape halfway up the threads of all pipe connections.
Install new gasket (12) and brake pneumatic valve (11) on park and emergency valve (4).
Install two screws (10).
Install elbow (7) and tee (9).
Install elbows (6 and 8) and plug (13).