On certain chassis built with lng engines, the nexgen lng tank's primary and secondary relief valves could fail to open and relieve tank pressure.
Risk and remedy
Risk
This could cause ice buildup on the discharge side of the primary and secondary pressure system allowing the relief system to freeze and become blocked resulting in over pressurization of the lng tanks creating the risk of catastrophic tank rupture which could cause serious injury or death.
Remedy
Dealers will retrofit the lng tanks with a new primary relief valve pipe away tube and a new ventilated shroud. the recall began april 6, 2004. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact mack at 1-610-709-3337.
Vehicle description: heavy duty trucks equipped with tie rod assemblies containing 24-DL model ball sockets and manufactured by trw. certain of the tie rod ball-socket bearings have a below-specification case depth and/or hardness, which can lead to premature wear of the socket.
Risk and remedy
Risk
If this condition occurs, the driver can lose partial control of the right front wheel, possibly resulting in a crash.
Remedy
Dealers will replace the defective tie rods. owner notification began july 13, 2001. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact mack at 1-610-709-3011 or trw customer service at 1-866-280-3287.
Vehicle description: class 8 trucks equipped with felsted electronic accelerator pedals. the return springs can break on the accelerator pedals that are equipped with stainless steel or electroplated wire return springs.
Risk and remedy
Risk
This condition could cause the pedal to go to full throttle if both return springs break, increasing the risk of a crash.
Remedy
Replacement accelerator pedals equipped with return springs manufactured of music wire with one additional coil on each spring and with an organic coating, eliminating electroplating will be installed.
Vehicle description: heavy duty trucks built with bendix air ABS with an EC-17 1030r electronic control unit (ecu), there have been reports of unwanted ABS activation at low speeds caused by 1) chafed ABS wheel speed sensor wires on rotating parts or 2) a damaged component at the wheel end that generates a certain type of erratic sensor signal.
Risk and remedy
Risk
This condition could cause the ABS ecu to exhaust the air at the air brake modulators for one or more of the wheels. this could result in extended braking distances and a possible crash.
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
10241946TSB: Barksdale Leveling Valve, Leak Test
10238788V-MAC III Odometer And Engine Hours Programming
10237339CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP )
10232613Mack MMD Alternator Pulley
10232599Flywheel Housing Thread Repair
10215315Programming Failure - Chassis With Cummins Engine And An Allison Transmission
10215312(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
10215289Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault Codes P1058 - 21 Or MID 130 PID 161 FMI 1
10213633USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
10213632NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
10213630Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool ( PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
10213625Mack - PTO Pump Speed Calculator
10213612(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
10213609Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
10213608Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
10213606Mack Chassis - Models LE, MR, RD - VMAC III ( Only ) AMETEK Speedometer Head ( P/N,s 85150089, 85150091 ) Inoperative After Installation
10213605Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit
Every Mack LE model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.