CDL Combination Test | 83 Questions | 100% Correct Answers

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If you cross connect the two air lines the following will result - ✔✔You will not have air going to the trailer brakes You have coupled with a semi-trailer. In what position should you put the f... ront trailer supports before driving away? - ✔✔Fully raised with the crank handle secured in its bracket Th trailer air supply control: - ✔✔Is a red, eight sided knob A device which connects the service and emergency air lines from the truck to the trailer is called.. - ✔✔Glad hands If one of the glad hands on your blue air line is missing a seal: - ✔✔You might end up with a service line air leak In order to supply air to the trailer, you must first: - ✔✔Stop engine so you can hear the brakes The hand valve should be used: - ✔✔To test the trailer brakes The air leakage rate for a combination vehicle (engine off, brakes on) should not be more than _______ psi per minute - ✔✔4 When should you use the hand valve to park a combination vehicle? - ✔✔Never When you get ready to back under the semi-trailer you should line up - ✔✔Directly in front of the trailer If the service air line comes apart while you are driving a combination vehicle but the emergency line stays together, what will happen right away - ✔✔Nothing is likely to happen until you try to apply the brakes When uncoupling, if you park the trailer at an angle [Show More]

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