MACK MP8 Service Manual
Service Bulletin
Mack Trucks, Inc.
Greensboro, NC USA
Date Group No. Release Page
This service bulletin replaces bulletin 214-93 dated 5.2010. 7.2013
Valves and Engine injectors, Adjustment
Valves and Engine Injectors, Adjustment
Trucks
214 93 02
1(13)
MP8
PV776-89119132
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
USA60336
Mack Trucks, Inc.
Service Bulletin
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.
Date
7.2013
Group
No. Release Page
214 93 02
2(13)
Mack Trucks, Inc.
Service Bulletin
Special Tools
For special tools ordering instructions, refer to Tool Information, Function Group 08.
T0012612
Date
7.2013
Tools
Group
No. Release Page
214 93 02
W0000416
3(13)
88800014
Flywheel Turning Tool
88880052 (part of set 88880053)
Feeler Gauges
85111377 or 88880053
Feeler Gauge Set
W2055377
Mack Trucks, Inc.
Service Bulletin
Valve cover removed
Date
7.2013
Group
214 93 02
No. Release Page
Service Procedures
Valves and Engine Injectors, Adjustment
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.
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.
4(13)
W0002368
W2005753
88800014
2
Remove the fasteners retaining the leaf springs to release
spring tension on the engine brake rocker arms. Remove leaf
springs.
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