Too tight a belt is destructive to the bearings of the driven part; a loose belt will slip.
Replace all belts in a set when one is worn. Single belts of
similar size should not be used as a substitute for a
matched belt set; premature belt wear can result because
of belt length variation. All belts in a matched set are
within .032 " of their specified center distances.
NOTE: When installing or adjusting an
accessory drive belt, be sure the bolt at
the accessory adjusting pivot point is
properly tightened, as well as the bolt in
the adjusting slot.
Adjust the belt tension so that a firm push with the thumb,
at a point midway between the two pulleys, will depress the
belt 1/2" to 3/4". If a belt tension gage such as BT-33-
73FA or equivalent is available, adjust the belt tension as
outlined in the chart.
Lubricate the overspeed governor, if it is equipped with a hinge-type cap oiler or oil cup, with 5 or 6 drops of engine oil
every 500 hours. Avoid excessive lubrication and do not lubricate the governor while the engine is running.
If the fan bearing hub assembly is provided with a grease fitting, use a hand grease gun and lubricate the bearings with
one shot of Texaco Premium RB grease, or an equivalent Lithium base multi-purpose grease, every 20,000 miles
(approximately 700 hours). Every 75,000 miles or 2500 hours, clean, inspect and repack the fan bearing hub assembly
with the above recommended grease.
At a major engine overhaul, remove and discard the bearings in the fan hub assembly. Pack the hub assembly, using
new bearings, with Texaco Premium RB grease or an equivalent Lithium base multi-purpose grease.
Check the shutdown system every 300 operating hours or each month to be sure it will function when needed.
On engines equipped with a hydrostarter, refer to the Hydraulic Starting System in the section on Engine Equipment for
preventive maintenance and lubrication.
To clean either the hair or polyurethane type air compressor air strainer element, saturate and squeeze it in fuel oil, or
any other cleaning agent that would not be detrimental to the element, until dirt free. Then dip it in lubricating oil and
squeeze it dry before placing it back in the air strainer. For replacement of the air strainer element, contact the nearest
Bendix Westinghouse dealer; replace with the polyurethane element, if available.
There is no scheduled interval for performing an inspection on the turbocharger. As long as the turbocharger is operating
satisfactorily and there is no appreciable loss of power, no vibration or unusual noise and no oil leaks, only a periodic
inspection is necessary.