MAINTENANCE PROCEDURES
TB18 Plus&20J Plus Maintenance Manual 5-33 © Apr 2022
Figure 5-41 Deutz D2.9L4 engine oil filter
Figure 5-42 Deutz TD2011L04i engine oil
filter
Figure 5-43 Cummins QFS2.8t3NA60
engine oil filter
Figure 5-44 WEICHAI WP3.2 engine oil
filter
2. Drain the engine oil into a container.
3. Remove and discard the seal ring of the engine oil
filter.
4. Thoroughly clean the residues on the seal surface
of the filter support.
5. Apply clean engine oil to the rubber washer of the
new engine filter.
6. Mount the new filter.
7. For the engine oil level inspection procedure,
please reference A-8 Inspect Engine Oil Level,
page 5-8.
8. Inspect the engine oil filter element to make sure no
leakage occurs.
C-5 Replace Air filter of Hydraulic Tank
Keeping the breather cap of hydraulic tank in well-
ventilated condition is vital to normal operation of
hydraulic pump and extending service life. Dirty or
blocked air filter of hydraulic tank may cause the
hydraulic pump to suction improperly, and continued
operation may result in component damage. The air
filter of hydraulic tank should be inspected more often
in hostile operating environment.
1. Using a wrench, remove the air filter of hydraulic
tank（located as shown inFig 5-19 , page 5-20）.
2. Install and tighten the new filter.
C-6 Inspect Weighing System
Before the test, move the boom fully up and down and
extend and retract the boom for at least twice to ensure
the pulley and track are adequately lubricated.
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