Volvo D13J - Page 13

VOLVOEngines7
TamperingwithNoiseControlSystem
Federallawprohibitsthefollowingactsorthecausingthereof:
(1)Theremovalorrenderinginoperativebyanyperson,otherthanforpurposesof
maintenance,repair,orreplacement,ofanydeviceorelementofdesignincorporatedinto
anynewvehicleforthepurposeofnoisecontrolpriortoitssaleordeliverytotheultimate
purchaserorwhileitisinuse;
or
(2)theuseofthevehicleaftersuchdeviceorelementofdesignhasbeenremovedor
renderedinoperativebyanyperson.
Amongtheactsthatconstitutetamperingaretheactslistedbelow:
•Removal,orrenderinginoperative,ofanyexhaustcomponents,includingmufers,
heavyordouble-wallexhausttubing,exibletubingorexhaustpipeclamping.
•Removal,orrenderinginoperative,ofthetemperature-modulatedcoolingfansystem.
•Removalofthecoolingfanshroud.
•Removal,orrenderinginoperative,oftheaircleanerorairintakein-linesilencer.
•Removalorrenderinginoperativeanyvehiclebodymountedsoundinsulation
components.
•Removal,orrenderinginoperative,oftheenginespeedgovernorsoastoallowengine
speedtoexceedthemanufacturersspecications.
•Removalofsplashshieldslocatedinsidethewheelhousings.
•Removalofengineblockshields.
•Removalofenginecrankcaseshieldsorinsulation.
•Removalofinsulatedrockerarmcovers.
•Removaloftransmissionnoiseshields.
NoiseShieldingandInsulationDevices
Maintenance
Ensuresoundshieldingandinsulatingdevicesareintact.Inspectcomponentsfordamage.
Primarysystemcomponentsrequiringnoiserelatedinspectionincludetheengine
compartmentinsulatingmaterials(includingenginecovers,hatchesinsulation)wheel
housings,fenders,andbodypanels.Inspectallrelatedfasteners,brackets,andclamps
fordamageandtightness.