pressure against the element.
4-26. Remove the crankcase breather from the engine
e. Carefully inspect the dry element for damaged
each 1,000 hours of operation and wash the breather in
paper pleats by placing a light inside of the element.
clean fuel oil. Dry thoroughly with compressed air. Also
Replace element if it is damaged or after ten cleanings.
clean the breather cap, mounted on the valve rocker arm
cover, in clean fuel oil every time the engine oil is
f. Clean the intake housing with a lint-free cloth
moistened with cleaning solvent before installing element.
4-27. DETROIT DIESEL BLOWER SCREEN
g. On Detroit Diesel units, reset the restriction
indicator by pushing the reset button at the end of the
indicator body after reassembly.
4-28. Inspect the blower screen each 1,000 hours of
operation. If necessary, clean the screen in clean fuel oil
h. Check rubber dust unloading valve for cracks,
and dry thoroughly with compressed air. Reinstall the
screen and gasket assembly with the screen side of the
assembly toward the blower.
4-30. With the engine running, check for flow of air from
the air box drain tubes each 1,000 hours of operation. If
the tubes are clogged, remove, clean and reinstall the
tubes. The air box drain tubes should be cleaned
periodically even though a clogged condition is not
4-31. ELECTRICAL SYSTEM.
4-32. CHECKING BATTERY ELECTROLYTE LEVEL.
4-33. The electrolyte level in each battery cell should
never be below the top of the plates. If the level is low,
add drinking water. The electrolyte level is correct when
filled to the bottom of the split ring in each cell.