Detroit Diesel 4000 Series, Service Manual

Page: 2687 / 2706

SERIES 4000 12/16V SERVICE MANUAL
F 010.05.08 – MAINTENANCE OF ROCKFORD FAN CLUTCH
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.
The fan drive system requires a minimum of maintenance. A few simple checks made periodically
will ensure correct operation and a long life.
Fan Hub Assembly to Mounting Bracket Bolts
Check bolt torque after first week of operation and every 500 hours thereafter.
Fan-To-Fan Mounting Hub Bolts
Check torque of all bolts after first week of operation and every 500 hours thereafter.
Fan Belts
Maintain proper belt tension.
Hoses and Fittings
Check all hoses and fittings every 500 hours. Replace all soft, brittle, or frayed hoses. Tighten
all loose or leaking fittings.
All information subject to change without notice.
Copyright © DETROIT DIESEL CORPORATION
F-7