Complete workshop service manual with electrical wiring diagrams for Cummins ISF Engines. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Cummins ISF Engines service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

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"4021704.exe" (Windows)
"4021704.iso" (Windows/Mac/Linux)

Cummins ISF3.8 CM2220, ISF3.8 CM2220 AN, ISF3.8 CM2220 IAN Service Manual

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"4021677.exe" (Windows)
"4021677.iso" (Windows/Mac/Linux)
Cummins ISF2.8 CM2220 E; ISF2.8 CM2220 AN; ISF3.8 CM2220; ISF3.8 CM2220 AN; ISB4.5, ISB6.7, ISD4.5, and ISD6.7 CM2150 SN; ISL8.9 CM2150 SN; ISM11 CM876 SN; ISZ13 CM2150; and ISB6.7 CM2150 SQ Fault Code Troubleshooting Manual

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"3653374 - Manual de Diagnóstico de Códigos de Falhas ISF2.8 CM2220 E/AN, ISF3.8 CM2220/AN, ISB4.5, ISB6.7, ISD4.5 e ISD6.7 CM2150 SN, ISL8.9 CM2159 SN, ISM11 CM876 SN, ISZ13 CM2150.pdf"

EXCERPT:
Table of Contents
Front
Section i - Introduction
Section E - Engine and System Identification
Section F - Familiarization
Section TS - Troubleshooting Symptoms
Section TT - Troubleshooting Symptoms (New Format)
Section DS - Engine Disassembly - Group 00
Section AS - Engine Assembly - Group 00
Section 0 - Complete Engine - Group 00
Section 1 - Cylinder Block - Group 01
Section 2 - Cylinder Head - Group 02
Section 3 - Rocker Levers - Group 03
Section 4 - Cam Followers/Tappets - Group 04
Section 5 - Fuel System - Group 05
Section 6 - Injectors and Fuel Lines - Group 06
Section 7 - Lubricating Oil System - Group 07
Section 8 - Cooling System - Group 08
Section 9 - Drive Units - Group 09
Section 10 - Air Intake System - Group 10
Section 11 - Exhaust System - Group 11
Section 12 - Compressed Air System - Group 12
Section 13 - Electrical Equipment - Group 13
Section 14 - Engine Testing - Group 14
Section 16 - Mounting Adaptations - Group 16
Section 17 - Miscellaneous - Group 17
Section 19 - Electronic Engine Controls - Group 19
Section L - Service Literature
Section V - Specifications
Back
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006-044 Fuel Return Overflow Valve
Initial Check
Preparatory Steps
Remove
Clean and Inspect for Reuse
Install
Finishing Steps
Initial Check
TOC
Check the fuel return overflow valve for external leaks or other damage.
Test fuel pump return flow. Refer to Procedure 005-016 in Section 5.
Preparatory Steps
TOC
WARNING
When using a steam cleaner, wear safety glasses or a face shield, as well as protective clothing. Hot steam can cause serious personal injury.
Steam-clean the fuel pump.
Remove
TOC
Remove the fuel return overflow valve.
Clean and Inspect for Reuse
TOC
Make sure all holes and internal passages are clear and free of debris.
Depress the center of the valve at the end of the overflow valve with a soft plastic or wooden object. The valve must depress easily and return fully.
Clean the mounting hole with quick-dry contact cleaner.
Install
TOC
Lubricate the new o-ring, thread, and bite edge with clean lubricating oil.
Install and hand-tighten the fuel return overflow valve.
Tighten to the following specification.
Torque Value:
Fuel Return Overflow Valve 20 n.m [177 in-lb]
Finishing Steps
TOC
Operate the engine and check for leaks.