Section 4 • Repair Procedures
REV A
September 2016
Part No. 227123 GRC 4 - 31
MAST COMPONENTS
5 Remove the fasteners securing the lower rear
access cover to the chassis and remove the
cover. Set the cover and the fasteners to the
side.
6 Tag and disconnect the wire harness from the
platform down valve coil at the base of the lift
cylinder.
7 Remove the retaining nut securing the platform
down coil to the platform down solenoid valve
and remove the coil. Set the coil and retaining
nut to the side.
8 Remove the platform down solenoid valve from
the lift cylinder. Set the valve to the side and
plug the cylinder port.
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.
9 Remove the fasteners securing the top mast
cover to the top of the mast. Set the cover and
fasteners to the side.
10 Using an overhead crane, attach a sling
equipped with the appropriate sized hooks to
the lifting eyes located inside the mast
assembly. Support the mast. Do not apply any
lifting pressure.
11 Working at the non-steer end of the lower
chassis, remove the mast retaining fasteners
and set the fasteners to the side.
12 Carefully pull the cables and hydraulic hoses
free while removing the mast from the machine.
Crushing hazard. The mast
assembly could become
unbalanced and fall if not properly
supported when removed from the
machine.
Component damage hazard.
Cables and hoses can be
damaged if they are kinked or
pinched.
13 Place the mast assembly on a suitable
structure capable of supporting it.
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