Komatsu PC88MR-10 Shop Manual page 508

40 Troubleshooting
Related information on troubleshooting
a13. Check of air cleaner for clogging
When using compressed air for cleaning, put
on personal protective items such as
protective eyeglasses, gloves, dust mask,
etc. to protect yourself from dirt that will fly
out.
When removing the outer element from the
air cleaner body, do not forcibly pull it out,
otherwise it can be dangerous.
Be careful not to fall from a high location on
unsafe scaffolding as a reaction when pulling
out the outer element.
Testing
Open the engine hood, and check if the red piston is
protruding into the transparent part of dust indicator
(1). If it is protruding, clean the air cleaner element.
a Do not clean the element before the red piston is
projected into the transparent part of dust
indicator (1).
a If the element is cleaned frequently before the
red piston is projected, the air cleaner will not
deliver the optimum performance, and the
cleaning effect will decrease.
40-20
Cleaning of outer element
a When the outer element is cleaned 6 times or
used for 1 year, replace it. When replacing it,
replace the inner element at the same time.
a Even when the number of cleanings of the outer
element is less than 6 times, it must be replaced
along with the inner element if dust indicator (1)
indicates the red zone immediately after
cleaning.
1. Open the battery cover on the rear left of the
machine, remove clips (2) (3 places), and
remove cover (3).
2. Remove outer element (6).
a Never remove inner element (7). Dust may
enter and it may lead to failure of the engine.
3. Clean the inside of the air cleaner body and
cover (3).
PC88MR-10