Cummins QSK23 / Komatsu 170-3 Engine Troubleshooting Service Repair Manual
Loaded with illustrations, instructions, photos, and diagrams, complete to service and repair your engine. Read and print pages, or copy the entire manual to your hard drive.
Bulletin Number: 4021375
This manual provides instructions for troubleshooting and repairing this engine in the chassis.
Component and assembly rebuild procedures are provided in the engine shop manual.
The manual is organized to guide a service technician through the logical steps of identifying
and correcting problems related to the engine.
This Troubleshooting and Repair Manual is intended to aid in determining the cause of
engine related problems and to provide recommended repair procedures.
The manual is divided into sections. Each section is equivalent to a group used in
Cummins’ filmcard system. Some sections contain Reference numbers and procedure
numbers. Reference numbers provide general information, specifications, diagrams,
and service tools where applicable. Procedure numbers are used to identify and
reference specific repair procedures for correcting the problem.
This manual does not contain fuel systems electronic troubleshooting. Use the
troubleshooting trees in this manual, if there are no electronic fault codes.
This manual is designed so the troubleshooting trees are used to locate the cause of an
engine problem. The troubleshooting trees then direct the user to the correct repair
procedure. The repair procedures within a section are in numerical order. However, the
repair steps within a given procedure are organized in the order the repair must be
performed regardless of the numerical order of the steps. The user must use the
contents pages or the index at the back of the manual to locate specific topics when not
using the troubleshooting trees.
This manual is the same as the manual used by workshops. Service Manual contains detailed instructions and step by step diagrams for all workshop procedures.
COMPATIBLE WITH ALL WINDOWS & MAC COMPUTERS
(WINDOWS 11, WINDOWS 10, WINDOWS 8, ETC.)