FSB-284-048
Service Bulletin Details
Public Details for: FSB-284-048
Mack truck: due to oil contamination into engine wire harness, main oil gallery pressure sensor or piston cooling jet pressure sensor has failed and new anti wicking jumper harness is available to stop oil from wicking back and causing dam
- 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 -
Models from 2013
2013 MACK CHU |
2013 MACK GRANITE (GU) |
2013 MACK LEU |
2013 MACK MRU |
2013 MACK PINNACLE (CXU) |
Models from 2012
2012 MACK GRANITE (GU) |
2012 MACK LEU |
2012 MACK MRU |
2012 MACK PINNACLE (CHU) |
2012 MACK PINNACLE (CXU) |
2012 MACK TD |
Models from 2011
2011 MACK GU |
2011 MACK LEU |
2011 MACK MRU |
2011 MACK PINNACLE (CHU) |
2011 MACK PINNACLE (CXU) |
2011 MACK TD |
Models from 2010
2010 MACK CHU |
2010 MACK CXU |
2010 MACK GU |
2010 MACK LEU |
2010 MACK MRU |
2010 MACK TD |
2010 MACK TERRAPRO (MRU) |
Models from 2009
2009 MACK CHU |
2009 MACK CXU |
2009 MACK GU |
2009 MACK LEU |
2009 MACK MRU |
2009 MACK TERRAPRO (MRU) |
Models from 2008
2008 MACK CHU |
2008 MACK CXU |
2008 MACK GU |
2008 MACK LEU |
2008 MACK MRU |
2008 MACK TERRAPRO (MRU) |
Models from 2007
2007 MACK CHU |
2007 MACK CXU |
2007 MACK GU |
2007 MACK LEU |
2007 MACK MRU |
Models from 2006
2006 MACK CHU |
2006 MACK CXU |
2006 MACK GU |
Field Service Bulletin Trucks Mack Trucks, Inc. Greensboro, NC USA SB-10055201-3870 Date Group No. Release Page 2.2014 284 048 01 1(3) Oil Pressure Sensor Jumper Harness CHU, CXU, GU, LEU, MRU, TD FSB 284-048, Oil Pressure Sensor Jumper Harness (February 2014) Some MACK vehicles with MP engines built between January 2004 and January 2013 may experience a main oil gallery pressure sensor or piston cooling jet pressure sensor failure that leads to oil contamination into the engine wire harness. A new anti-wicking jumper harness, part number 22205127, is available. This jumper harness will stop oil from wicking back down and possibly causing damage to the new sensor or cause later improper diagnostics. Oil pressure sensor part number 21302639 is replaced with a new oil pressure sensor part number 21634021. Follow the procedure below if wicking is observed. Part numbers are stamped on the side of the sensors. Note: It is not necessary to replace the entire engine harness for oil contamination. If a sensor is being replaced for electrical faults and oil has NOT wicked into the harness, REPLACE THE SENSOR ONLY. If a sensor has failed AND is wicking oil into the engine harness, REPLACE THE SENSOR AND INSTALL THE JUMPER HARNESS AS INSTRUCTED IN THIS BULLETIN. If the engine harness is being replaced for other reasons and the sensor is part number 21302639 or older, REPLACE THE SENSOR ONLY. The new harness will NOT require the jumper harness. Note: Both sensors should be part number 21634021. Required Parts Jumper harness part number 22205127. PV729-FSB284-048_M USA62965 Mack Trucks, Inc. Field Service Bulletin Date 2.2014 Group No. Release 284 048 01 You must read and understand the precautions and guidelines in Service Information, Function Group 30, "General Safety Practices, Electrical and Electronics" before performing this procedure. If you are not properly trained and certified in this procedure, ask your supervisor for training before you perform it. Repair 1 Secure the vehicle for service by parking it on a flat level surface, applying the parking brake, chocking the rear wheel, and placing the transmission in neutral. 2 Disconnect all cables from the negative (ground) battery terminals to prevent personal injury from electrical shock and prevent damage to electrical components. 3 Raise hood or raise cab. 4 For cabover models, remove the charge air cooler (CAC) pipe from the engine turbocharger outlet and CAC inlet. Remove the CAC temperature sensor from the pipe and set the pipe aside. 5 Clip applicable cable ties and remove P-clamps securing the oil pressure sensor harness. Disconnect the oil pressure sensor harness from the sensor. 6 Reverse the back shells on the jumper harness connectors before installing the jumper harness. Connect the 90 degree end of the jumper harness to the oil pressure sensor and the straight end to the harness. Install cable ties and P-clamps as necessary. 7 If oil has wicked to the engine control module connectors, clean the connectors thoroughly with electronic cleaner and dry with compressed air. 8 If removed, install the CAC pipe. Tighten the V-band clamps to 7 ±1 Nm (62 ±9 in-lb). Install the CAC temperature sensor. 9 Install all the previously removed cables to the negative (ground) battery terminals. 10 Start the engine and check for proper operation. 11 Close hood or lower cab. 12 Use Tech Tool to clear any diagnostic trouble codes (DTC). Page 2(3) Mack Trucks, Inc. Field Service Bulletin Date 2.2014 Group No. Release 284 048 01 Page 3(3) Reimbursement This repair may be eligible for reimbursement if a product failure was experienced within time and mileage limits of the applicable Warranty coverage. Reimbursement is obtained via the normal claim handling process. Claim Type (used only when uploading from the Dealer Bus. Sys.) 01 Labor Code Primary Labor Code 2732F-01-80 — 0.3 hrs Causal Part 21302639 Mack Trucks Inc. reserves the right to make any changes in design or to make additions to or upon its products without incurring any obligations to install the same on vehicles previously built.