FSB 237-021
Service Bulletin Details
Public Details for: FSB 237-021
Valve, common rail, removal
Models from 2018
Models from 2017
Models from 2016
Field Service Bulletin Trucks Mack Trucks Greensboro, NC USA Date 3.2021 Group 237 No. 021 Release 01 Page 1(10) Valve, Common Rail, Removal AN, CHU, CXU, GR, GU, PI, MRU, LR, TE MP7, MP8 FSB 237-021, Valve, Common Rail, Remove (March 2021) Some MACK vehicles built with MP7 or MP8 engines between 11/14/2016 and 12/31/2018 may experience internal leakage or an electrical fault of the Electronic Pressure Relief Valve (ePRV). • If the DTC below is present or diagnostic testing leads to replacing the ePRV for internal leakage, perform the repair procedure outlined in this FSB to install the ePRV delete kit and run accessory kit. DTC list: • P009B-13, Fuel Pressure Relief Control Circuit Open Required Parts Part Number Description Quantity 85156544 EPRV delete kit 1 Part Number Description Quantity USA17, USA18 Accessory kit 85156014 1 Part Number Description Quantity 23488937 Pressure Sensor, F2 Common Rail 1 23502057 Wiring Harness, Rear 1 Required software If Applicable Parts (Reference Step 18) 11L Engines PV729-FSB237-021_M USA155204970 Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 01 13L Engines Part Number Description Quantity 23488939 Pressure Sensor, F2 Common Rail 1 23502054 Wiring Harness, Rear 1 Note: Running this kit without removing the ePRV will result in adverse vehicle affects. Procedure You must read and understand the precautions and guidelines in Service Information, Function Group 20, "Engine Safety Practices" before performing this procedure. If you are not properly trained and certified in this procedure, ask your supervisor for training before you perform it. NOTE: Information is subject to change without notice. Illustrations are used for reference only and can differ slightly from the actual vehicle being serviced. However, key components addressed in this information are represented as accurately as possible. CAUTION Risk of material damage. Risk of impurities being introduced into the fuel system. Ensure conditions of maximum cleanliness when carrying out any work on the fuel system. CAUTION Risk of skin injury. High fuel pressure. The injection system may be pressurised. When working on the injection system, remove the first part cautiously. CAUTION Risk of skin injury. Grease, oil and chemical substances can cause skin and eye injuries. Oils and grease can cause acne and eczema. A used lubricant is more harmful than an unused lubricant. Protective equipment such as gloves and eye protection must be used when working with grease, oils and chemical substances. Page 2(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 1 Refer to IMPACT document ID: 2115-03-02-02 Valve Cover, Replacement for valve cover removal procedure. 2 Loosen the cap nuts. 3 Remove and discard the pipe. T2170571 4 Disconnect the connector. T2170572 Release 01 Page 3(10) Mack Trucks Field Service Bulletin Date 3.2021 5 Clean the area around the fitting. 6 Remove the fitting and seal. T2170573 7 Install the seal and plug in the cylinder head. Tightening torque Cylinder head, plug 36± 6 lbf-ft. (50 ± 8 Nm) T2170574 Group 237 No. 021 Release 01 Page 4(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 01 8 Install the tool. 88800634 9 Remove the valve. Note: Use a spanner as a counterhold to prevent the common rail brackets and pressure pipes from being loaded during component removal and installation. T2170575 T2170576 CAUTION Risk of personal injury. Loose particles can spatter up and injure the eyes. Work with compressed air can cause hearing impairment. Always wear safety goggles and hearing protection when working with compressed air. Page 5(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 10 Install the protecting plug. Required material Protecting plug 88800527 11 Clean the threads. Note: Leave the protecting plug in place until installing the common rail plug. T2170577 12 Remove the protecting plug. Release 01 Page 6(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 01 13 Install the plug in the rail. Note: Do not use locking fluid or thread sealant. 14 Torque tighten the plug. Tightening torque Common rail, plug 92± 7 lbf–ft. (125 ± 10 Nm) T2170578 Note: Cap is not required to seal the common rail where the drain pipe connected. T2170576 Note: Use a spanner as a counterhold to prevent the common rail brackets and pressure pipes from being loaded during component removal and installation. 15 Cut the harness. 16 Remove connector and harness. Note: Do not tape or seal the end of the harness. Page 7(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 01 T2170579 17 A product improvement has been made to the Fuel Rail Pressure Sensor (FRPS) and its wiring harness. A visual Inspection of the FRPS electrical connector will indicate which sensor and wiring harness is on the vehicle. T2170580 Page 8(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 01 18 Inspect the FRPS, if the Old Style Connector is found (displayed above with red X), replace the sensor and wiring harness per Impact Instructions listed below. If the New Improved Connector is found, No further action is needed and proceed to next step. 1. Refer IMPACT document ID: 2373-03-03-06 Pressure Sensor, Common Rail, Replacement, Valve Cover Removed for pressure sensor replacement. 2. Refer IMPACT document ID: 2861-03-03-03 Wiring Harness, Injector, Replacement (Rear), Valve Cover Removed for injector wiring harness replacement. 19 Refer to IMPACT document ID: 2115-03-02-02 Valve Cover, Replacement for valve cover install procedure. 20 Using PTT Operation 1700-22-03-06 Program accessory kit: 85156014 Page 9(10) Mack Trucks Field Service Bulletin Date 3.2021 Group 237 No. 021 Release 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. UCHP Reimbursement Claim Type (used only when uploading from the Dealer Bus. W Sys.) Labour Code Valve, common rail remove 2373-01-09-01 (0.6 hrs) ECM and ACM, Reprogramming 2841-22-02-01 (0.4 hrs) Accessory Kit, programming 1700-22-03-06 (0.1 hrs) Valve Cover, Replacement 2115-03-02-02 Use Impact for Time (0.9 - 1.9 hr.) If Applicable Pressure Sensor, Common Rail, Replacement, Valve Cover Removed 2373-03-03-06 (0.2 hrs) Wiring Harness, Injector, Replacement (Rear), Valve Cover removed 2861-03-03-03 Use Impact for Time (0.3 – 0.4 hrs) Causal Part 22720232 Mack Trucks North America 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. 01 Page 10(10)