Genie Industries Z-30/20, Руководство по обслуживанию

Страница: 126 / 150

7 - 16 Genie Z-30/20 Part No. 43063
Service Manual - Third Edition Section 7 - Repair Procedures
3-5
Platform Leveling Master Cylinder
The master cylinder acts as a pump for the slave
cylinder. It is part of the closed circuit hydraulic
loop that keeps the platform level through the
entire range of primary boom motion. The master
cylinder is located on the mid-pivot at the pivot end
of the primary boom.
How to Remove the Platform
Leveling Master Cylinder
Before cylinder removal is
considered, bleed the cylinder to
be sure that there is no air in the
closed loop. See 2-2, How to
Bleed the Slave Cylinder.
1 Tag, disconnect and plug the master cylinder
hydraulic hoses. Cap the fittings on the
cylinder.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to squirt
or spray.
2 Remove the pin retainer from the master
cylinder rod-end pivot pin. Place a rod through
the rod-end pivot pin and twist to remove the
pin.
PRIMARY BOOM COMPONENTS
3 Remove the pin retainer from the master
cylinder barrel-end pivot pin. Place a rod
through the barrel-end pivot pin and twist to
remove the pin.
4 Remove the cylinder from the machine.