505 L4-1971cc XN (1983)
Front Crankshaft Seal: Technical Service Bulletins
Service Recommendations - For Severe Conditions
BULLETIN NO. 232
DATE:
April, 1987
SUBJECT:
SERVICE RECOMMENDATIONS FOR XN6 VEHICLES OPERATING UNDER SEVERE CONDITIONS
INFORMATION
On XN6 engines, complaints of oil leak between the timing cover and crankshaft pulley on high mileage vehicles can in some cases be attributed to
partial blockage of the positive crank-case ventilation system. (Build-up of condensation moisture)
This problem may occur on vehicles which are operated under severe climatic and driving conditions (i.e. high humidity, extreme cold weather and
repeated short distance driving).
