Troubleshooting - WilTec QYL12 Operation Manual

TROUBLESHOOTING

Problem
4)
Jack will not
5)
lift load
6)
4)
Jack bleeds off
5)
after lift
6)
Jack will not lower 3)
after unloading 4)
3)
Poor lift 4)
performance
Will not lift to 2)
full extension
Lifting
Model Capacity
(t)
QYL12 12
QYL20 20
QYL20D 20
QYL22 22
QYL32 32
QYL50 50
© by WilTec Wildanger Technik GmbH
http://www.WilTec.de
http://www.aoyue.eu
http://www.teichtip.de
Possible Causes
Release valve not tightly closed
Overload condition
Air supply inadequate
Release valve not tightly closed
Overload condition
Hydraulic unit malfunction
Reservoir overfilled
Linkages binding
Fluid level low
Air trapped in system
Fluid level low
Min. Lifting
Altitude Altitude
(mm) (mm)
250 165
260 170
220 130
225+2
130
5
250+2
160
5
270+2
160
5
4) Ensure release valve is tightly closed
5) Remedy overload condition
6) Ensure adequate air supply
1) Ensure release valve is tightly closed
2) Remedy overload condition
3) Contact manufacturer or service partner
3) Drain fluid to proper level
4) Clean and lubricate moving parts
3) Ensure proper fluid level
4) With ram fully retracted, remove oil filler
plug to let pressurized air escape; reinstall
oil filler plug
1) Ensure proper fluid level
Regulating Air Pressure
Altitude Range
(mm) (MPA)
80 0.8-1.2
80 0.8-1.2
80 0.8-1.2
80 0.8-1.2
- 0.8-1.2
- 0.8-1.2
Solution
Net
Weight
(kg)
10
17
15
36
21
34
Seite 18