Detroit Diesel 4000 Series, Service Manual, Page: 2673 / 2706

SERIES 4000 12/16V SERVICE MANUAL
E 012.05 AK – CHARGE AIR COOLANT PUMP LEAKING
Start with the first probable cause for charge air coolant pump leaking at the weep hole
listed in Table 36, perform the check and take the suggested remedial action. If the problem
persists, go to the next probable cause, perform the check, etc., until troubleshooting is complete.
Probable Causes Check Remedial Action
Radial lip oil seal leaking
Rotary seal leaking
For oil discharge
Engine coolant discharge
Replace sealing ring
Replace slip ring; replace coolant
pump if necessary
Table 36 Charge Air Coolant Pump Leaking at Weep Hole
E 012.05 AL – FAN DRIVE FAULTY
Start with the first probable cause for a faulty fan drive listed in Table 37, perform the check and
take the suggested remedial action. If the problem persists, go to the next probable cause, perform
the check, etc., until troubleshooting is complete.
Probable Causes Check Remedial Action
Vee-belt Vee-belt tension Set tension; replace if necessary.
Refer to G221.051.03 Operator
Guide
Control oil pressure Oil supply; solenoid valve control Clean; replace if necessary
Fan coupling faulty Fan coupling Replace
Table 37 Fan Drive Faulty
All information subject to change without notice.
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