Positive Crankcase Ventilation: Service and Repair
CDR Valve And Hoses (Turbo):
CDR VALVE AND HOSES
CAUTION: Do Not allow any solvent to come in contact with the diaphragm of the crankcase depression regulator valve, because the diaphragm will fail.
The crankcase depression regulator valve is replaced as an assembly. Replace hoses as required, if inspection indicates cracks or decay. Refer to Maintenance for diesel crankcase ventilation system maintenance requirements.