Genie Z-30/20N, Service Manual

Page: 38 / 161

3 - 20 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N Part No. 139378
Section 3 • Scheduled Maintenance Procedures June 2011
REV A
Checklist C Procedures
C-1
Grease the Platform Overload
Mechanism (if equipped)
Note: Genie specifications require that this
procedure be performed every 500 hours or 6
months, whichever comes first. Perform this
procedure more often if dusty conditions exist.
Application of lubrication to the platform overload
mechanism is essential to safe machine operation.
Continued use of an improperly greased platform
overload mechanism could result in the system not
sensing an overloaded platform condition and will
result in component damage.
1 Locate the grease fittings on each pivot pin of
the platform overload assembly.
2 Thoroughly pump grease into each grease
fitting using a multipurpose grease.
Grease Specification
Chevron Ultra-duty grease, EP NLGI 2 (lithium based)
or equivalent
C-2
Test the Platform Overload
System (if equipped)
Note: Genie specifications require that this
procedure be performed every 500 hours or six
months, whichever comes first.
Testing the platform overload system regularly is
essential to safe machine operation. Continued
use of an improperly operating platform overload
system could result in the system not sensing an
overloaded platform condition. Machine stability
could be compromised resulting in the machine
tipping over.
The platform overload system is designed to detect
an overloaded platform and prevent machine
operation anytime the machine is turned on. When
activated, the system halts all normal boom
operation, giving visual and audible warning to the
operator.
Models equipped with the platform overload option
are provided with additional machine components:
an adjustable spring-loaded platform support
subassembly, a limit switch, an electronic module
which receives the overload signal and interrupts
power, and an audio/visual warning indication to
alert the operator of the overload.