3
CF65/75/85 series ZF intarder
DIAGNOSTICS
8-1
8. ZF INTARDER
8.1 FAULT-FINDING TABLE
SYMPTOM: NO BRAKING MOMENT
Possible cause Remedy
Oil level too low Check oil level
Intarder is not filled with the specified oil Change the oil
No pump pressure Check system
No control pressure Check system
No intarder pressure Check system
SYMPTOM: INSUFFICIENT BRAKING MOMENT
Possible cause Remedy
Oil level too low Check oil level
Intarder is not filled with the specified oil Change the oil
Pump pressure too low Check system
Control pressure too low Check system
Intarder pressure too low Check system
Freewheeling turning torque system remains
fully or partly switched on
Check the free movement of the plungers in the
freewheeling turning torque system
SYMPTOM: CONSTANT BRAKING MOMENT WHEN INTARDER IS SWITCHED OFF
Possible cause Remedy
Oil level too high Check oil level
Control pressure is independent of the position
of the control lever
Check system
1
ᓻ 200337
https://www.truck-manuals.net/
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