Known Recalls

Recall campaign · NHTSA 79V133000

Engine and engine cooling: engine

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1979-05-31.

Recall campaignNHTSA 79V133000

Engine and engine cooling: engine

Component
Engine and engine cooling: engine
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
23,000
Reported to NHTSA
1979-05-31
Owners notified
1979-11-02

Defect description

IN THE EVENT OF TURBOCHARGER COMPRESSOR WHEEL FAILURE, ONE OR MORE OF THE FOUR CAPSCREWS THAT HOLD THE TURBOCHARGER TOGETHER MAY BE STRUCK BY PARTS OF THE COMPRESSOR WHEEL, RESULTING IN THE CAPSCREWS BEING DAMAGED. IF THESE CAPSCREWS ARE DAMAGED TO THE POINT THAT THEY ALLOW THE COMPRESSOR BACK PLATE TO DISLOCATE FROM THE TURBOCHARGER BEARING HOUSING, ENGINE LUBRICATING OIL MAY BE ALLOWED TO ESCAPE UNDER PRESSURE, CONTACTING THE ENGINE EXHAUST MANIFOLD SECTIONS OR TURBOCHARGER TURBINE HOUSING.

Manufacturer remedy

DEALER WILL INSTALL A SHIELD FOR THE HEADS OF THE FOUR CAPSCREWS, ALONG WITH STRONGER SAE 8 GRADE 8 CAPSCREWS, IF NECESSARY, AT NO COST TO OWNER.

Notes

VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH ENDT (B) 676, ETAZ (B) 673A, AND ETAY(B) 673A ENGINES.SYSTEM: ENGINE AND ENGINE COOLING.CONSEQUENCES OF DEFECT: ENGINE LUBRICATING OIL, IN THE PRESENCE OF A SOURCE OFIGNITION, COULD LEAD TO AN ENGINE COMPARTMENT FIRE AND SERIOUS INJURY TOVEHICLE PASSENGERS.

Scope of coverage

44 model years across 15 models.

ModelYears on record
MACK DM1979 1978 1977
MACK DMM1979 1978 1977
MACK F1979 1978 1977
MACK MC1979 1978 1977
MACK MR1979 1978 1977
MACK R1979 1978 1977
MACK RD1979 1978 1977
MACK RL1979 1978 1977
MACK RM1979 1978 1977
MACK RS1979 1978 1977
MACK RWL1979 1978
MACK RWS1979 1978 1977
MACK U1979 1978 1977
MACK WL1979 1978 1977
MACK WS1979 1978 1977

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.