Air compressor
Gear driven, not cracked, bent, broken, securely mounted, no leaks
Power steering pump
Gear driven, not cracked, bent, broken, securely mounted, no leaks
Coolant reservoir
Securely mounted, proper fluid level, not leaking
Check all hoses
No dry rot, leaks, securely mounted
Transmission fluid
Check dip stick for proper level with engine running for at least 5 minutes
Engine oil
Check dip stick for proper level when engine is off
Water pump
Securely mounted, mounting bolts are tight, not leaking (belt driven)
Alternator
Securely mounted to the mounting plate (belt driven)
Belts
No cracks, dry rot or cuts, no more than 3/4” play in the center