Preventive Maintenance
DETROIT DIESEL
belts every 200 hours or 6,000 miles and adjust, if
necessary. Too tight a belt is destructive to the bearings
of the driven part; a loose belt will slip.
BELT TENSION CHART (lbs/belt)
Fan Drive
Generator Drive
Model 2 or 3 Single
Two 3/8" One
One9/16
belts
belt
or
1/2"
belt "
1/2'-belts belt
3,4-53 40-50
-
40-50
50-70
40-50
6v-53
60-80 80-100 40-50
50-70
40-50
All
For 3-point or triangular drive use o tension of 90-
120.
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
Item 20
point is properly tightened, as well
as the bolt in the adjusting slot.
Item 24
Adjust the belt tension so that a firm push with the
On engines equipped with a Hydrostarter, refer to the
thumb, at a point midway between the two pulleys, will
Hydraulic Starting System in the section on Engine
depress the belt 1/2" to 3/4". If a belt tension gage such
Equipment
for
preventive
maintenance
and
as BT-33-73FA or equivalent is available, adjust the belt
lubrication.
tension as outlined in the chart.
Item 25
Item 21
Lubricate the overspeed governor, if it is equipped with
To clean either the hair or polyurethane type air
a hinge-type cap oiler or oil cup, with 5 or 6 drops of
compressor air strainer element, saturate and squeeze it
engine oil every 500 hours. Avoid excessive lubrication
in fuel oil, or any other cleaning agent that would not be
and do not lubricate the governor while the engine is
detrimental to the element, until dirt free. Then dip it in
running.
lubricating oil and squeeze it dry before placing it back
in the air strainer.
Item 22
At a major engine overhaul, discard the bearings in the
For replacement of the air strainer element, contact the
fan hub assembly used in radiator cooled engines. Pack
nearest Bendix Westinghouse dealer; replace with the
the hub assembly, using new bearings, with Texaco
polyurethane element, if available.
Premium RB grease or an equivalent Lithium base
multi-purpose grease.
Item 26
Item 23
There is no scheduled interval for performing an
Check the shut-down system every 300 operating hours
inspection on the Airesearch turbocharger. As long as
or each month to be sure it will function when needed.
the turbocharger is operating satisfactorily and there
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