
MAINTENANCE
5-6 / Mid-Mount Ascendant Aerial Tower
© 2021 Pierce Manufacturing Inc. All Rights Reserved.
5-3.
Hydraulic System
5-3.1
Hydraulic System Components
The hydraulic system consists of a reservoir that supplies oil to a PTO-driven, variable-displacement, piston pump.
The hydraulic oil supplied from the pump pressurizes two electric-over-hydraulic closed-center valves. One valve
controls the oil flow to the stabilizer system components including the beam extension cylinders and the jack support
cylinders. The second valve operates the ladder lift cylinders, extension cylinders, and the rotation drive unit.
A smaller emergency power unit containing a gear pump provides backup hydraulic power in the event of the failure
of the main system.
Figure 5-1: Recommended Aerial Hydraulic Oil Level
POM0822, POM0846, POM0848
NOTE:
Hydraulic reservoir oil level may be checked by using the sight level gauge located in front of the
right middle stabilizer.
Item # Description
1.
Reservoir Sight Gauge
2.
Reservoir Desiccant Breather
3.
Hydraulic Oil Fill Cap
2
1
3
Содержание Mid-Mount Ascendant Aerial Tower
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Страница 12: ...FOREWORD x Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...
Страница 42: ...SAFETY 1 30 Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...
Страница 70: ...GENERAL 2 28 Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...
Страница 106: ...OPERATION 4 32 Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...
Страница 126: ...MAINTENANCE 5 20 Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...
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Страница 132: ...INDEX Index 4 Mid Mount Ascendant Aerial Tower 2021 Pierce Manufacturing Inc All Rights Reserved...