2. Weekly maintenance（40hours）
Increase the following content based on daily
maintenance.
1. Air cleaner maintenance
General condition：
Perform maintenance on the air cleaner after
50-250 hours of operation.
Replace air cleaner after maintaining for six
times.
Caution
If the working condition is bad, air cleaner
needs to be serviced/replaced more
frequently.
Under dusty work conditions, the cycle of
maintaining and changing air cleaner will be
shortened. It is advised to perform
maintenance between 8-50 hours; replace it
between 100-300 hours.
Maintenance method：
(1) Air cleaner body (2) Dust cup
(3) Secondary element (4) Primary element
(5) Evacuator valve
①Open the evacuator valve once a week
under ordinary conditions - or daily when
used in a dusty place. This will get rid of
large particles of dust and dirt.
②Wipe the inside air cleaner clean
with cloth if it is dirty or wet.
① Dismantle filter end cap;
② Take out the filter element;
③ Main filter (outer filter) Blow off the
dust inner and outer of the outer
filter element with dry compressed
air.
④ Safety filter element (inner filter):
hand beat clean, avoid blowing with
air. Special attention.
⑤
Caution
Pressure of compressed air must be under
205 kPa (2.1 kgf/cm , 30 psi)
Warning
1. Dust will blow into your eyes, so please
wear protective glasses.
2. Do not maintain and replace element
filter in time according to the requirement
will lead to the damage of engine in
advance.
2. Fan belt
Stop the engine.
Use finger to press the belt at the midway
point between the water pump pulley and the
generator pulley by 10kg press, and check
the drop distance if it is up to standard.
New 8-12(＜5min)
old 10-14(≥5min)
Cummins QSF2.8 engines equip with
automatic tensioning pulley, and their fan belt
tension do not need adjust.
Caution
If the belt is loose, cut out, or has no surplus
it should be changed.
DO NOT perform this check with the engine
running to avoid personal injury.
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