Komatsu 830E, Shop Manual

Page: 113 / 783

Installation
1. Reset the indicator nut from red to green by gently
blowing air through threaded hole from gasket
end of indicator wing nut.
2. Replace safety element and tighten the safety
indicator nut to 10 ft. lbs. (13 N.m) torque.
AIR INTAKE TROUBLESHOOTING
To insure maximum engine protection, be sure that all
connections between air cleaners and engine intake
are tight and positively sealed. If air leaks are sus-
pected, check the following:
1. All intake lines, tubes and hump hoses for breaks,
cracks, holes, etc., which could allow an intake air
leak.
2. Check all air cleaner gaskets for positive sealing.
3. Check air cleaner elements, main and safety, for
ruptures, holes or cracks.
4. Check air cleaner assembly for structural damage,
cracks, breaks or other defects which could allow
air leakage. Check all mounting hardware for
tightness.
AIR CLEANER ASSEMBLY CLEANING
Main Filter Cleaning
For best results, after inspection, determine the condi-
tion of the element and choose either the ‘‘Washing’’ or
‘‘Compressed Air’’ method for cleaning the filter ele-
ment.
1. Wash elements with water and liquid detergent or
a 50-50 solution of Oakite 202 and warm water.
NOTE: This method is best when element is loaded
with carbon, soot, oil or dust.
a. Soak the element in a solution of liquid deter-
gent and water for 15 to 30 minutes. Rotate
element back and forth in the solution to free
element of dirt deposits. DO NOT soak ele-
ments for more than 24 hours.
b. Rinse element with a stream of fresh water in
the opposite direction of normal air flow until
rinse water runs clear. Maximum permissible
water pressure is 40 psi (276 kPa). A complete,
thorough rinse is essential.
c. Dry the element thoroughly. If drying is done
with heated air, the maximum temperature
must not exceed 140°F (60°C) and must be
circulated continually. Do not use a light bulb
for drying elements.
d. After cleaning the element, inspect thoroughly
for slightest ruptures and damaged gaskets. A
good method to detect paper ruptures is to
place a light inside the filter element as shown
in Figure 5-3, and inspect the outer surface of
the filter element.
2. Clean dust loaded elements with dry filtered com-
pressed air:
a. Maximum nozzle pressure must not exceed 30
psi (207 kPa). Nozzle distance from filter ele-
ment surface must be at least one inch (25 mm)
to prevent damage to the filter material.
b. As shown in Figure 5-4, direct stream of air from
nozzle against inside of filter element. This is the
clean air side of the element and air flow should
be opposite of normal air flow.
c. Move air flow up and down vertically with pleats
in filter material while slowly rotating filter ele-
ment.
d. When cleaning is complete, inspect filter ele-
ment as shown in Figure 5-3 and if holes or
ruptures are noted, discard the element.
FIGURE 5-3. INSPECTING FILTER ELEMENT
C05012 4/98 Air Filtration System C5-3