Method For Replacing Def Filter - Komatsu PW118MR-11 Operation & Maintenance Manual

MAINTENANCE
7.
Tighten the cover until clearance (B) between it and body
is eliminated with the bare hand or a filter wrench.
At this time, check that bolt-fixed position (C) of tube (5) is
within the range of the groove of elbow (2).
REMARK
As a mark, notch (D) is made on the plate.
8.
By using tools, tighten bolt (3) and nut (4).
Check the KCCV hose for leakages, crack, and loose clamps. Replace if necessary.

METHOD FOR REPLACING DEF FILTER

Immediately after the engine is stopped, the parts are still very hot. Do not replace the filter immediately.
Wait for all of parts to cool down before starting the work.
NOTICE
• Komatsu recommends using Komatsu genuine parts for replacement parts.
• If the machine is operated without the DEF filter attached, or with the filter other than Komatsu gen-
uine parts, foreign materials may enter the DEF pump and DEF injector which will cause failure of
the machine. Never operate the machine without the DEF filter attached, nor use the filter other than
Komatsu genuine parts.
• The DEF filter cannot be flushed. Flushing or regenerating of it will degrade the performance of fil-
ter, and will cause the breakage of the DEF tank. Never reuse the element.
• Improper assembly of the DEF filter may cause leakage of the DEF. Replace the DEF filter in the cor-
rect procedure.
• The DEF freezes at -11 °C. If it is frozen, replacement of the filter becomes difficult. Replace the filter
when the temperature around the DEF pump is higher than -11 °C, and in the condition that the DEF
is not frozen.
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WARNING
WENAM00130
MAINTENANCE PROCEDURE
4-75