Keep the rubber nipple on the pre-cleaner
4-35. FUEL FILTER.
of the housing free from restrictions or
particles. The rubber nipple must always
4-46. ELECTRICAL SYSTEM.
4-47. CHECKING BATTERY ELECTROLYTE
4-48. The electrolyte level in each battery cell
should never be below the top of the plates. If
t h e electrolyte level is low, fill battery with
pure water to the level as shown on the
DETROIT DIESEL ENGINE.
battery. Tighten loose terminals and keep them
clean. Specific gravity of a fully charged
4-41. Drain approximately 1/4 pint (.12 Itr.) of
battery is 1.250 to 1.275.
fuel to remove sediment and water from the
filter and strainer daily by opening drain cock
4 - 4 9 . Diesel .powered compactors have two
in each shell.
batteries under the floor board.
4-42. AIR CLEANER AND FILTER (see figure
4-43. The air cleaner should be serviced as
indicated by the air restriction indicator. The
dry-type, paper air cleaner element is cleaned
by tapping alternate ends of the element
" l i g h t l y " on a flat surface to dislodge dirt
4 - 4 4 . Low pressure compressed air may be
used to aid in cleaning this air cleaner. Hold
the air stream into the inside of the filter. Trap
t h e air by putting a rag around the nozzle.
Blow the air out through the filter rather than
FIGURE 4-3. BATTERY LOCATION.
4-51. Examine the belts for cracks on the inner
s u r f a c e of the plies before making tension
adjustments. A belt that is adjusted too tightly
places an added load on the water pump and
t h a t is too loose allows slippage, premature
failure of the belt and may lower the output of
the charging system. The drive belts should be
checked and adjusted every 50 hours of
operation or weekly. Adjust the belt tension so
t h a t a firm push with the thumb, at a point
midway between the two pulleys, will depress
the belt ½ to ¾ of an inch (12.7 - 19.1 mm).
CAUTION: When adjusting the fan belts,
adjust the fan shroud as necessary
to center the fan within the shroud.