Air Cleaner With Dust Indicator; Inspection Every 500 Hours Operation; Replacing The Air Cleaner Element; Inspection Every 1000 Hours Operation - Ingersoll-Rand 7/26E Operation & Maintenance Manual

Operation & Maintenance Manual

Air Cleaner with Dust Indicator

This indicator is attached to the air cleaner. When the air cleaner element is clogged, air
intake resistance becomes greater and the dust indicator signal turns to red indicating the
element needs to be changed.
When the signal turns to red, replace the element. Then press the dust indicator button to
reset the indication.
Checking and Adjusting Cooling Fan V-Belt (2nd time and after):
Check and adjust the cooling fan V-belt tension every 250 hours operation from 2nd time
and on.
See "Inspection after Initial 50 Hours Operation".

Inspection Every 500 Hours Operation

Replacing the Air Cleaner Element

Replace the air cleaner element periodically even if it is not damaged or dirty. When
replacing the element, clean the inside air cleaner case at the time. If having the air cleaner
with double elements, do not remove the inner element. If the engine output is still not
recover (or the dust indicator still actuates if having the air cleaner with a dust indicator)
even though the outer element has replaced with new one, replace the inner element with
new one.

Inspection Every 1000 Hours Operation

Replacing Cooling Water

Cooling water contaminated with rust or water scale-reduces the cooling effect. Even when
antifreeze agent (LLC) is mixed, the cooling water gets contaminated due to deteriorated
ingredients. Replace the cooling water at least once a year.
1. Remove the header tank cap.
2. Remove the bottom radiator hose of the radiator and drain the cooling water.
3. After draining the cooling water, reconnect the hose.
4. Fill radiator and engine with cooling water via the header tank.
Beware of Scalding by Hot Water
Wait until the temperature goes down before draining the Cooling water. Otherwise, hot
water may splash to cause scalding.

Checking and Adjusting the Fuel Injection Valve

As the adjustment requires specialized knowledge and skill, consult your Ingersoll Rand
dealer. This adjustment is needed to obtain the optimum injection pattern for full engine
performance.
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Engine
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