Which of the following is NOT to be checked during the pre-trip engine compartment inspection?

Engine Compartment (Engine Off)
Leaks/Hoses:
- Look for puddles on the ground.
- Look for dripping fluids on underside of engine and transmission.
- Inspect hoses for condition and leaks.
Oil Level:
- Indicate where dipstick is located.
- See that oil level is within safe operating range. Level must be above refill mark.
Coolant Level:
- Inspect reservoir sight glass, or
- If engine is not hot, remove radiator cap and check for visible coolant level.
Power Steering Fluid:
- Indicate where power steering fluid dipstick is located.
- Check for adequate power steering fluid level. Level must be above refill mark.
Engine Compartment Belts:
- Check the following belts for snugness (up to 1/4-inch play at center of belt), cracks or frays:
- Power steering belt.
- Water pump belt.
- Alternator belt.
- Air compressor belt.