HD-7P / HD-7W Four-Post Lifts
76
P/N 5900041 — Rev. M — July 2019
Bleeding the Hydraulic Cylinder
The Hydraulic Cylinder on the Lift is self-bleeding, which means that in most cases any air in the
system can be removed by raising and lowering the Runways a few times; “bleeding” the Hydraulic
System of the unwanted air.
⚠
WARNING
Before performing any maintenance on your Lift (for example, bleeding the
Hydraulic Cylinder or adding Hydraulic Fluid), make sure both Runways are on the
ground and the power source has been disconnected.
Symptoms of air in the Hydraulic System include Runways moving erratically and/or making odd
noises. These could be caused by other situations; refer to
To bleed the Hydraulic System
:
1.
Raise and lower the Runways up to six times;
pause for at least one minute between
each cycle
.
The Lift’s motor cannot run continuously; it is designed for regular use, but not continuous use.
2.
Watch the Runways as you raise and lower them.
When the Lift stops moving erratically or stops squeaking, you can stop the bleeding process.
3.
Check the Hydraulic Fluid reservoir on the Power Unit.
Bleeding the Hydraulic System may significantly lower the amount of Hydraulic Fluid in the
reservoir.
4.
Add additional Hydraulic Fluid if necessary.
If your Lift is still moving erratically or making odd noises after bleeding the Hydraulic System, refer to
Summary of Contents for HD-7P
Page 8: ...HD 7P HD 7W Four Post Lifts 8 P N 5900041 Rev M July 2019 Specifications ...
Page 78: ...HD 7P HD 7W Four Post Lifts 78 P N 5900041 Rev M July 2019 5585182 5585247 ...
Page 79: ...HD 7P HD 7W Four Post Lifts 79 P N 5900041 Rev M July 2019 Labels ...
Page 80: ...HD 7P HD 7W Four Post Lifts 80 P N 5900041 Rev M July 2019 ...
Page 81: ...HD 7P HD 7W Four Post Lifts 81 P N 5900041 Rev M July 2019 ...
Page 82: ...HD 7P HD 7W Four Post Lifts 82 P N 5900041 Rev M July 2019 Parts Drawings ...
Page 83: ...HD 7P HD 7W Four Post Lifts 83 P N 5900041 Rev M July 2019 ...
Page 84: ...HD 7P HD 7W Four Post Lifts 84 P N 5900041 Rev M July 2019 ...
Page 85: ...HD 7P HD 7W Four Post Lifts 85 P N 5900041 Rev M July 2019 ...
Page 86: ...HD 7P HD 7W Four Post Lifts 86 P N 5900041 Rev M July 2019 ...
Page 87: ...HD 7P HD 7W Four Post Lifts 87 P N 5900041 Rev M July 2019 ...
Page 88: ...HD 7P HD 7W Four Post Lifts 88 P N 5900041 Rev M July 2019 ...
Page 89: ...HD 7P HD 7W Four Post Lifts 89 P N 5900041 Rev M July 2019 ...
Page 91: ...HD 7P HD 7W Four Post Lifts 91 P N 5900041 Rev M July 2019 Maintenance Log ...
