Doosan D20S-5 Operation & Maintenance Manual page 190

completed. completed.
Maintenance Section Maintenance Section
Universal Joint – Inspect Universal Joint – Inspect
Check for worn or damaged bearings. Have worn Check for worn or damaged bearings. Have worn
or damaged bearings replaced. Check for loose or damaged bearings replaced. Check for loose
retaining bolts and nuts. Tighten the bolts and nuts, retaining bolts and nuts. Tighten the bolts and nuts,
if necessary. if n ecessary.
-187- -187-
Air Intake System - Change Air Intake System - Change
Changing Primary Element Changing Primary Element
See topic, "Air Intake System - Check, Clean" in See topic, "Air Intake System - Check, Clean" in
"Every 250 Service Hours or Monthly" "Every 250 Service Hours or M
Changing Secondary Element Changing Secondary Element
1. 1. Remove the primary air cleaner element. See Remove the primary air cleaner element. See
topic "Servicing Filter Element." Clean the topic "Servicing Filter Element." Clean the
inside of the air cleaner housin inside of the air cleaner hou
2. 2. Remove the secondary element. Inspect the Remove the secondary element. Inspect the
gasket between the air cleaner housing and the gasket between the air cleaner housing and the
engine inlet. Replace the gasket if it is engine inlet. Replace the gasket if it is
damaged. damaged.
Always replace the secondary element. Do not Always replace the secondary element. Do not
attempt to reuse it by cleaning. attempt to reuse it by cleaning.
3. 3. Install a new secondary element. Install a new Install a new secondary element. Install a new
or cleaned primary element. Install the cover. or cleaned primary element. Install the cover.
Tighten the latches. Tighten the latches.
4. 4. Start the engine and observe the air cleaner Start the engine and observe the air cleaner
service indicator. If the indicator shows RED service indicator. If the indicator shows RED
after installing a new secondary element and a after installing a new secondary element and a
cleaned primary (outer) element, replace the cleaned primary (outer) element, replace the
cleaned primary filter with a cleaned primary filter with a new element.
5. 5. Stop the engine. Close the hood and seat Stop the engine. Close the hood and seat
assembly. assembly.
onthly"
sing and cover. g and cover.
NOTICE NOTICE
new element.