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Takeuchi TB215R - Page 250

Takeuchi TB215R
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5
5
SLEWING
TROUBLESHOOTING
5D0AX00SLEWING
The machine slews, but overruns a lot when slewing stops, or slewing cannot be stopped
1
Is the amount of overrun
ī™šī™‹ī™ˆī™‘ī˜ƒī™–ī™ī™ˆī™šī™Œī™‘ī™Šī˜ƒī™–ī™—ī™’ī™“ī™–ī˜ƒī™šī™Œī™—ī™‹-
in specs?
Within specs
Normal
Out-of-specs
2 Check the pilot valve
Faulty
Repair or replace the pilot
valve
Normal
ī˜–
Check the spool opera-
tion
Faulty
ī˜µī™ˆī™“ī™„ī™Œī™•ī˜ƒī™’ī™•ī˜ƒī™•ī™ˆī™“ī™ī™„ī™†ī™ˆī˜ƒī™—ī™‹ī™ˆī˜ƒī™‹ī™’ī™˜ī™–ī™Œī™‘ī™Šī˜ƒ
block
Normal
4 Check the slew pressure
ī˜³ī™•ī™ˆī™–ī™–ī™˜ī™•ī™ˆī˜ƒī™—ī™’ī™’ī˜ƒī™ī™’ī™š
Adjust the slew relief valve
pressure
Adjust to set pressure
ī˜³ī™•ī™ˆī™–ī™–ī™˜ī™•ī™ˆī˜ƒī™‡ī™’ī™ˆī™–ī˜ƒī™‘ī™’ī™—ī˜ƒī™•ī™Œī™–ī™ˆ
Repair or replace the relief
valve
1. Is the amount of overrun when slewing stops within
specs?
ī˜ƒī“ī˜•ī˜‘ī˜ƒī˜¶ī™ˆī™•ī™™ī™Œī™†ī™ˆī˜ƒī™‡ī™„ī™—ī™„ī˜ī˜ƒī˜³ī™ˆī™•ī™‰ī™’ī™•ī™ī™„ī™‘ī™†ī™ˆī˜ƒī™†ī™•ī™Œī™—ī™ˆī™•ī™Œī™„ī”
2. Check the pilot valve
Check if the spool of the pilot valve returns to the neu-
ī™—ī™•ī™„ī™ī˜ƒī™“ī™’ī™–ī™Œī™—ī™Œī™’ī™‘ī˜ƒī™šī™‹ī™ˆī™‘ī˜ƒī™—ī™‹ī™ˆī˜ƒī™’ī™“ī™ˆī™•ī™„ī™—ī™Œī™’ī™‘ī˜ƒī™ī™ˆī™™ī™ˆī™•ī˜ƒī˜‹ī™–ī™ī™ˆī™šī˜Œī˜ƒī™Œī™–ī˜ƒī™•ī™ˆī™ī™ˆī™„ī™–ī™ˆī™‡ī˜ƒ
ī™„ī™‰ī™—ī™ˆī™•ī˜ƒ ī™’ī™“ī™ˆī™•ī™„ī™—ī™Œī™’ī™‘ī˜‘ī˜ƒ ī˜§ī™Œī™–ī™†ī™’ī™‘ī™‘ī™ˆī™†ī™—ī˜ƒ ī™—ī™‹ī™ˆī˜ƒ ī™‹ī™’ī™–ī™ˆī˜ƒ ī™†ī™’ī™‘ī™‘ī™ˆī™†ī™—ī™Œī™‘ī™Šī˜ƒ ī™—ī™‹ī™ˆī˜ƒ
ī™“ī™Œī™ī™’ī™—ī˜ƒī™™ī™„ī™ī™™ī™ˆī˜ƒī™„ī™‘ī™‡ī˜ƒī™†ī™’ī™‘ī™—ī™•ī™’ī™ī˜ƒī™™ī™„ī™ī™™ī™ˆī˜ƒī˜‹ī™–ī™ī™ˆī™šī˜ƒī™…ī™ī™’ī™†ī™Žī˜Œī˜ƒī™‰ī™•ī™’ī™ī˜ƒī™—ī™‹ī™ˆī˜ƒī™†ī™’ī™‘-
ī™—ī™•ī™’ī™ī˜ƒī™™ī™„ī™ī™™ī™ˆī˜‘ī˜ƒī˜©ī™Œī™—ī˜ƒī™—ī™‹ī™ˆī˜ƒī™“ī™•ī™ˆī™–ī™–ī™˜ī™•ī™ˆī˜ƒī™Šī™„ī™˜ī™Šī™ˆī˜ƒī™—ī™’ī˜ƒī™—ī™‹ī™ˆī˜ƒī™‹ī™’ī™–ī™ˆī˜ƒī™ī™˜ī™–ī™—ī˜ƒī™‡ī™Œī™–-
connected.
ī˜ƒī˜ī˜ƒ ī˜²ī™“ī™ˆī™•ī™„ī™—ī™ˆī˜ƒī™—ī™‹ī™ˆī˜ƒī™ī™ˆī™™ī™ˆī™•ī˜ƒī˜‹ī™–ī™ī™ˆī™šī˜Œī˜ƒī™„ī™‘ī™‡ī˜ƒī™—ī™‹ī™ˆī™‘ī˜ƒī™•ī™ˆī™ī™ˆī™„ī™–ī™ˆī˜ƒī™Œī™—ī˜ƒī™—ī™’ī˜ƒī™•ī™ˆī™„ī™‡ī˜ƒ
ī™—ī™‹ī™ˆī˜ƒī™“ī™•ī™ˆī™–ī™–ī™˜ī™•ī™ˆī˜ƒī™Šī™„ī™˜ī™Šī™ˆī˜‘
ī˜ƒī˜ī˜ƒ ī˜¬ī™‰ī˜ƒī™—ī™‹ī™ˆī˜ƒī™“ī™•ī™ˆī™–ī™–ī™˜ī™•ī™ˆī˜ƒī™Œī™–ī˜ƒī™ī™ˆī™•ī™’ī˜ī˜ƒī™—ī™‹ī™ˆī˜ƒī™“ī™Œī™ī™’ī™—ī˜ƒī™™ī™„ī™ī™™ī™ˆī˜ƒī™Œī™–ī˜ƒī™‘ī™’ī™•ī™ī™„ī™ī˜‘
'ī˜“$,ī˜“ī˜”=

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