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125
MAINTENANCE
Every 2000 Hours
Replacing the Hydraulic Oil and
Cleaning the Suction Strainer
WARNING
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Stop the engine and allow the machine
to cool down before performing
maintenance.
• The engine, hydraulic lines and many
other parts of the machine are hot
directly after the engine is stopped.
Touching these parts will cause
burns.
• The hydraulic fluid is also hot and
under high pressure.
Be careful when loosening caps and
plugs. Working on the machine under
these conditions could result in
burns or injuries due to the hot oil
spurting out.
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Oil may spurt out if caps or filters are
removed or pipes disconnected before
releasing the pressure in the hydraulic
system.
• Gradually press the air breather
button to relieve tank pressure.
• When removing plugs or screws or
disconnecting hoses, stand to the
side and loosen slowly to gradually
release the internal pressure before
removing.
1. Slew 45
°
clockwise and set the machine
to the hydraulic oil level inspection posture.
Refer to page 107 “Inspecting the
Hydraulic Oil Level and Replenishing”.
2. Remove cap nut (3) on the air breather
(2).
3. Press button (4) and bleed the air from
the tank.
4. Replace the air breather filter.
Refer to page 124 “Replacing the Air
Breather filter”.
5. Remove the plug (1).
6. Loosen the bolts, and remove the flange
(5).
7. Remove the return filter (6).
8. Place a pan for catching the spent oil
under the drain plug (8).
9. Loosen the drain plug (8) and drain the
hydraulic oil.
10. Loosen the hose clip and remove the
hose (9).
11. Loosen the bolts, and remove the flange
(10).
12. Remove the suction strainer (11) and
clean it.
13. Clean the inside of the hydraulic tank.
14. Install the new return filter and suction
strainer (11).
15. Install the flanges (5) and (10).
16. Install the hose (9) to the flange (10).
17. Tighten the drain plug (8).
18. Add hydraulic oil up to the middle of the
sight gauge (7).
19. Tighten the plug (1)
20. Follow the procedure next “Bleeding the
air” to bleed the air from the hydraulic oil
circuit.
3
5
9
8
7
6
4
2
11
10
J1G0031
1
Summary of Contents for TB53FR
Page 6: ...4...
Page 8: ...6...
Page 91: ...89 TRANSPORT Loading and Unloading 90 Securing the Machine 91 Cautions on Transporting 92...
Page 140: ...138...
Page 152: ...150...
Page 156: ...154 SPECIFICATIONS Machine Dimensions J1K0011 N L M D Q P J H K C F G A S E B R T U...
Page 158: ...156 SPECIFICATIONS Operating Range J1K0021 D J H K C F G A E B...
Page 160: ...158 MEMO...
Page 168: ...166...
Page 174: ...172 MEMO...
Page 186: ...184...
Page 187: ...185 INDEX...