volvo — Volvo VN VHD Operator's Manual Maintenance Service

Maintenance 83 Tampering with Noise Control System Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person, other than for purposes of maintenance, repair, or replacement, of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use; or (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person. Among the acts that constitute tampering are the acts listed:

Noise Shielding and Insulation Devices Cooling System Exhaust System Air Intake/Air Induction System Engine Control, EGR and Fuel Systems