1977 MACK RM — Problems, Recalls & Safety Data
N/A
Safety Rating
0
Owner Complaints
6
Recalls
0
Service Bulletins
0
Investigations
Overview of the 1977 MACK RM
The 1977 MACK RM has received a total of 0 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 6 recall campaigns affecting this vehicle, covering issues with ENGINE AND ENGINE COOLING:ENGINE, SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING), SEAT BELTS:FRONT:ANCHORAGE.
Recalls for the 1977 MACK RM
NHTSA has recorded 6 recalls for the 1977 MACK RM, potentially affecting up to 105,186 vehicles.
Recall 79V133000 — ENGINE AND ENGINE COOLING:ENGINE
| 23,000 vehicles affected
Defect: 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...
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.
View full details →Recall 78V210000 — SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)
| 19,370 vehicles affected
Defect: DELAYS OF UP TO ABOUT 2 SECONDS MAY EXIST IN THE BRAKE APPLICATION TIMES TO THE BRAKES ON THE BOGIE AXLES IN THE PRESENCE OF CERTAIN TYPES OF WHEEL SPEED SENSOR SIGNAL DISCONTINUITIES OR DISTORTIONS THAT MAY OCCUR AS A RESULT OF SENSOR WIRE FAILURE. THIS CONSTITUTES A NON-COMPLIANCE TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS".
Remedy: DEALER WILL INSTALL NEW WHEEL SPEED SENSORS THAT INCORPORATE IMPROVED WIRING AND THE PRESENT BOGIE ANTI-WHEEL LOCK SYSTEM WILL BE CHANGED TO AN AXLE-TO-AXLE SYSTEM FOR IMPROVED RELIABILITY.
View full details →Recall 77V174000 — SEAT BELTS:FRONT:ANCHORAGE
| 6,591 vehicles affected
Defect: THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, "SEATBELT ASSEMBLIES". ALTHOUGH THE SEATBELTS IN QUESTION PERFORMED MARGINALLY WITH RESPECT TO THE 5000 LB. LOAD REQUIREMENT, ADDITIONAL TESTING CONFIRMED THAT THE ANCHOR COULD FAIL, ALLOWING EITHER THE ANCHOR TO SLIP OVER THE HOLD-DOWN NUT OR THE ANCHOR TO SEPARATE INTO TWO PIECES.
Remedy: DEALER WILL INSPECT AND, IF NECESSARY, REPLACE SEAT BELT ASSEMBLIES WITHOUT CHARGE TO OWNER.
View full details →Recall 77V173000 — ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
| 48,000 vehicles affected
Defect: THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.
Remedy: DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.
View full details →Recall 77V205000 — SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET
| 7,400 vehicles affected
Defect: A DEFICIENCY EXISTS IN THE WELDS SECURING THE REAR SPRING INSULATOR BRACKET TO THE AXLE HOUSING. THIS IS DUE TO IMPROPER POSITIONING OF THE WELD, IN RELATIONSHIP TO THE BRACKET AND AXLE HOUSING. FAILURE OF THE WELDS WOULD CAUSE SEPARATION OF THE SPRING INSULATOR BRACKET AND THE AXLE HOUSING, RESULTING IN IMPROPER ALIGNMENT OF THE AFFECTED AXLE.
Remedy: DEALER WILL REWELD THE INSULATOR SPRING BRACKET AT NO COST TO OWNER.
View full details →Recall 77V096000 — WHEELS
| 825 vehicles affected
Defect: THE FRONT WHEEL RIM CLAMP STUDS, INSTALLED ON THE INVOLVED VEHICLES, MAY NOT HAVE BEEN MANUFACTURED CORRECTLY, CAUSING A BRITTLE CONDITION IN THE THREAD ROOT AREA. THE STUDS COULD EVENTUALLY CRACK AND BREAK WHEN WHEEL NUTS ARE TIGHTENED TO SPECIFICATIONS.
Remedy: THE DEALER WILL REPLACE ALL SUSPECT FRONT WHEEL STUDS, WITHOUT CHARGE TO OWNER.
View full details →Owner Complaints for the 1977 MACK RM
No complaints have been filed with NHTSA for the 1977 MACK RM.
Safety Rating for the 1977 MACK RM
NHTSA has not yet tested the 1977 MACK RM in its New Car Assessment Program.
Technical Service Bulletins for the 1977 MACK RM
No technical service bulletins have been reported for this vehicle.
NHTSA Investigations for the 1977 MACK RM
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the MACK RM
- 1972 MACK RM — 0 complaints
- 1973 MACK RM — 0 complaints
- 1974 MACK RM — 0 complaints
- 1975 MACK RM — 0 complaints
- 1976 MACK RM — 0 complaints
- 1977 MACK RM (current)
- 1978 MACK RM — 0 complaints
- 1979 MACK RM — 0 complaints
- 1980 MACK RM — 0 complaints
- 1981 MACK RM — 0 complaints
- 1982 MACK RM — 0 complaints
Other MACK Models
- MACK MACK — 35 total complaints
- MACK ANTHEM (AN) — 12 total complaints
- MACK CXU612 — 12 total complaints
- MACK CX613 — 10 total complaints
- MACK GRANITE (GR) — 10 total complaints
- MACK CH600 — 9 total complaints
- MACK GU — 9 total complaints
- MACK RD — 8 total complaints