Main Filter Element Cleaning; Inspecting Filter Element - Komatsu 930E-2 Shop Manual

6. Reset the indicator nut from red to green by gently
blowing air into threaded hole from gasket side of
nut.
7. Install new safety element and tighten safety indi-
cator wing nut to 10 ft. lbs. (13 N.m) torque.
8. Install clean or new, main filter element into air
cleaner and secure with wing nut. Tighten wing
nut hand tight, do not use a wrench or pliers. If
filter element is being reused, make sure sealing
gasket is not damaged. The gasket must seal
completely.
9. Close and latch the dust collectors on the bottom
of the air cleaner assembly.
C05013 5/98

MAIN FILTER ELEMENT CLEANING

NOTE: Remember that only the main filter elements
may be cleaned and then only if they are structurally
intact. Do not reuse an element that is damaged. DO
NOT clean and reuse the safety (secondary) filter
elements. Replace them with new parts.
After inspection, determine the condition of the ele-
ment and choose either the washing or compressed
air method for cleaning the filter element. If the element
is clogged with carbon, soot, oil and/or dust, the com-
plete washing procedure will produce the best results.
1. Wash elements with water and detergent as fol-
lows:
a. Soak the element in a solution of detergent and
water for at least 15 minutes. Rotate element
back and forth in the solution to loosen dirt
deposits. DO NOT soak elements 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. If holes or ruptures are found,
do not reuse the element. Discard and replace
with a new part.
FIGURE 5-3. INSPECTING FILTER ELEMENT
Air Filtration System C5-3