Show:
drum brakes
brake chambers
slack adjusters
valves
TPV
100
drum max permitted service limit
What is .120
100
optimun angle for push-rod and slack adj.
What is 90*
100
need to push in the locking collar to adj. or back-off this slack adj.
What is manual slack adj.
100
protects the air system from to much psi.
What is safety pop-off valve
100
color of air lines that come out and go to trailer
What is red and blue
200
drum max machining dimension
What is .090
200
a type 30 chamber with 50lbs. of air pressure applied
What is 1500 psi.
200
the link between the slack adj. and the push-rod
What is clevis and pin
200
pressure on this valve sends air psi. to both air systems
What is the foot valve
200
conects the air lines to the trailer
What are the gladhands
300
most common truck drum size
What is 16.5 inches
300
min. amount of air pressure to over-come the park brake spring
What is 60 psi.
300
has a wormshaft and meshing teeth and is most common in todays trucks
What are auto slacks
300
sends signal air to TPV to allow trailer to receive air for transport
What is trailer park valve
300
shuttles back and forth to shut off or allow air to flow to the trailer
What is spool valve
400
drum is wider at outside then at the inside
What is bellmouthed
400
spring brake side of dual curcuit brake chamber that can be replaced without changing the entire unit
What is piggy back
400
date when FMVSS 121 mandates ABS must be required on tractors
What is 3/1/97
400
allows primary air to fill the spring brake chambers and allow the truck to roll free
What is tractor park valve
400
when you use the trailer hand valve only what makes the lights come on when the switch is in the primary curcuit
What is 2nd brake light switch
500
small cracks and signs of heat damage all over inside of drum
What is heat-checking
500
most common size of dual curcuit brake chamber
What is 30/30 brake chamber
500
responds to increases in pushrod stroke to actuate a cone clutch
What is stroke sensing automatic slack adj.
500
receives a charge of air from TPV to allow full brake application
What is the bob-tail valve
500
the psi. that the valve will pop-off at to isolate the tractor from the trailer
What is 20-40 psi