Mack Trucks MP8 Engine Manual (EN)

Service Bulletin Mack Trucks, Inc. Trucks Greensboro, NC USA Date Group No. Release Page This service bulletin replaces bulletin 214-93 dated 5.2010. 7.2013 214 93 02 1(13) Valves and Engine injectors, Adjustment MP8 Valves and Engine Injectors, Adjustment W2005941 This information covers the correct procedure for adjusting the valves and engine injectors on MACK MP8 engines. Note: This information also applies to Mack Trucks Australia. Contents “Special Tools”, page 3 “Valves and Engine Injectors, Adjustment”, page 4 PV776-89119132 USA60336

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Mack Trucks, Inc. Date Group No. Release Page Service Bulletin 7.2013 214 93 02 2(13) Note: Information is subject to change without notice. Illustrations are used for reference only and may differ slightly from the actual engine version. However, key components addressed in this information are represented as accurately as possible.

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Mack Trucks, Inc. Date Group No. Release Page Service Bulletin 7.2013 214 93 02 3(13) Tools Special Tools For special tools ordering instructions, refer to Tool Information, Function Group 08. T0012612 W0000416 88800014 Flywheel Turning Tool 85111377 or 88880053 Feeler Gauge Set W2055377 88880052 (part of set 88880053) Feeler Gauges

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Mack Trucks, Inc. Date Group No. Release Page Service Bulletin 7.2013 214 93 02 4(13) Service Procedures Valves and Engine Injectors, Adjustment Valve cover removed You must read and understand the precautions and guide- lines 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. Special tools: 3949521, 85111377 or 88880053, 88800014, 88800232, 88880052 1 Note: This valves and engine injectors adjustment procedure replaces all previous procedures including those found in Mack MP8 Service Manuals 5-113 and 5-117.

Remove the plug from the lower right side of the flywheel housing and install the flywheel turning tool. 88800014 W0002368 2 Remove the fasteners retaining the leaf springs to release spring tension on the engine brake rocker arms. Remove leaf springs. W2005753

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