134 Maintenance Hood The hood latch mechanism should be greased with white grease yearly. If the mechanism is hard to work or binds, the latch should be cleaned before greasing. Rustprotection The rustprotection applied when the cab was produced is adequate for normal use and service. If an extension of the cab rustprotection is desired or if the vehicle is used in a severe application, it is recommended that cavity wax is re-applied every 3rd year. W8001132 Cab Air Filter Air going into the cab passes a filter located on the right, front side of the cab.
Remove the filter and clean with an air gun (no more than 20 psi pressure) after 40,000 miles (64,000 km), (in dusty conditions as often as every 10,000 miles [16,000 km]). Make sure the air stream is directed from the inside out. The filter should not be cleaned and reused more than once. Replace with a new filter after maximum 70,000 miles (110,000 km), or earlier if driving in dusty conditions. A clogged filter decreases the efficiency of the air conditioning system. W8003189