(2) After the air system is bled down, the spring brake chambers on the
semitrailer should actuate promptly.
(3) Leakage at the open drain cock should not exceed a one inch bubble in five
seconds. If excess leakage is found, replace multi-function valve.
(4) Close drain cock.
(5) Repeat steps 1 through 4 using other air reservoir.
Air Reservoirs, Drainage of Moisture and Tests.
Wear protective goggles when opening the air reservoir
drain cock. Avoid contact with the air stream.
Failure to observe this warning could result in
serious personal injury.
Open drain cock on each air reservoir.
cocks after drainage.
(2) Test and check for serviceability. With air brake system connected to
towing vehicle, coat drain cocks, pipe plugs and connections with soapsuds.
No leakage is permissible. Tighten any leaking connections. Inspect for
damage or corrosion. Replace reservoir if it leaks or if any damage or
corrosion is found that would weaken reservoir.
TASK ENDS HERE
This task covers:
General mechanics tool kit