Commercial drivers must inspect critical under-the-hood systems to ensure safe vehicle operation before driving. Match each engine compartment component on the left with its primary pre-trip inspection criteria on the right.
- Drive Belts (Alternator / Water Pump)Check for snugness with no more than 3/4 inch of deflection at the center, and verify there is no cracking or fraying.
- Engine Coolant SystemVerify fluid level in the reservoir or sight glass when cool, and check for puddles or active leaks underneath.
- Engine Electrical WiringInspect for cracked or worn insulation, loose connections, and ensure no bare copper wire is exposed.
- Cooling System HosesEnsure connections and clamps are tight, and verify there are no cuts, severe bulges, or fluid leaks.
Cevap
Drive Belts match with checking for up to 3/4 inch deflection and physical wear; Engine Coolant System matches with checking reservoir level when cold and inspecting for leaks; Engine Electrical Wiring matches with checking for intact insulation and secure connections; Cooling System Hoses match with checking for tight clamps and no bulges or leaks.
According to official CDL pre-trip inspection procedures: Drive belts are checked for physical integrity and belt tension (up to 3/4 inch play); the engine coolant system requires checking the reservoir level safely when cold and ensuring no leaks; electrical wiring must be firmly connected with intact insulation; and hoses must have tight clamps without bulges, cuts, or leaks.
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Under-the-hood component inspection procedures and safety tolerances
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