Challenger Techstar CVT MT525B Series, Operators Instruction Book

Page: 103 / 248

5 . MAINTENANCE AND ADJUSTMENTS
5.15 Challenger MT500B EU
5
5.9 - AIR FILTER
Stop the engine before changing the main element.
5.9.1 - Prefilter and main filter
(Fig. 17)
Main filter A
- Clean the main filter if the clogging indicator light comes
on.
- Replace the filter after cleaning five times or every 1200
hours.
Replacing the prefilter B
- Replace the prefilter after five changes, or cleanings, of
the main filter, or once a year or every 1200 hours.
Check that the filter body is not damaged and ensure that
all collars and hoses are tight.
1. Lift the left-hand bonnet panel.
2. Remove the prefilter and filter A and B.
3. Clean the main element as outlined below, depending
on its condition:
- blow a jet of compressed air onto the filter, from the
inside outwards, at a maximum pressure of 5 bar
(75psi), keeping the filter sufficiently far from the
nozzle.
After cleaning, ensure the prefilter is not damaged by
illuminating the inside to check that there are no holes,
and check the condition of the seals.
4. Before refitting the element, wipe the filter body with
a damp cloth to remove any dust.
5. If the clogging indicator light comes on after a short
period of work, the element must be replaced. How-
ever, if the lamp stays on after the external element
has been replaced, the internal element must also be
changed.
DO NOT TAP IT AGAINST A HARD SURFACE TO CLEAN
IT.
CAUTION: Do not attempt to blow the main
element clean with the engine exhaust gases.
Never apply oil to a dry element. Never use
petrol (gasoline), paraffin or cleaning solvents
to clean an element.
Fig. 17
Z2-499-05-03
B
A
Z2-498-05-03
Z2-496-05-03