Detroit Diesel 4000 Series, Service Manual, Page: 2637 / 2706

SERIES 4000 12/16V SERVICE MANUAL
E 011.01 – GENERAL MECHANICAL TROUBLESHOOTING
INFORMATION
To avoid injury when working near or on an operating
engine equipped with a hydraulic clutch fan:
3
Never work in close proximity to the fan.
3
Never try to keep the fan from rotating by holding
the fan.
3
Never tie down the fan with straps, chains, or other
restraints.
3
Never shut off the oil supply to the fan clutch.
To avoid injury when working near or on an operating
engine equipped with a hydraulic clutch fan, remove loose
items of clothing and jewelry; tie back or contain long hair
that could be caught in any moving part causing injury. A
hydraulic fan may start without warning.
Before investigating a complaint, it will be necessary to fully understand the operation of the fan
clutch and the fan clutch controls. Refer to section C 222.05.01C 222.05.01 , for information
on the description and operation of the fan clutch and the fan clutch controls. Refer to DDEC
III/IV Multi-ECM Troubleshooting Guide, 6SE496 for information regarding the ECM (Electronic
Control Module) system and DDEC controls.
All information subject to change without notice.
Copyright © DETROIT DIESEL CORPORATION
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