Hydraulic Tank; Gradually. Do Not Allow Oil To Squirt - Genie GTH-636 Service Manual

June 2007
REV C
3-2

Hydraulic Tank

The primary functions of the hydraulic tank are to
cool, clean and deaerate the hydraulic fluid during
operation. It has an internal return line filter with a
filter condition indicator.
How to Remove the
Hydraulic Tank
Component damage hazard. The
work area and surfaces where this
procedure will be performed must
be clean and free of debris that
could get into the hydraulic
system.
Note: When removing a hose assembly or fitting,
the O-ring on the fitting and/or hose end must be
replaced and then torqued to specification during
installation. Refer to Section 2, Hydraulic Hose and
Fitting Torque Specifications.
1 Lower the boom to the stowed position.
2 Raise the machine 15 inches / 40 cm.
3 Using a lift with a 1 ton / 1 kg minimum
capacity, remove the counterweight from under
the hydraulic tank at the pivot end of the
machine.
Tip over hazard. The
counterweight is critical to
machine stability. If the
counterweight is not installed
during re-assembly of the
machine, the machine will become
unstable and tip over, resulting in
death or serious injury. Do not
operate the machine without the
counterweight installed onto the
machine.
Crushing hazard. The
counterweight is extremely heavy.
Keep your body clear when
removing the counterweight.
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Section 4 • Repair Procedures
FUEL AND HYDRAULIC TANKS
4 Remove oil cap from top of hydraulic tank.
5 Using an approved hand-operated pump, drain
the hydraulic tank into a suitable container.
Refer to Section 2, Specifications .
Bodily injury hazard. Beware of
hot oil. Contact with hot oil may
cause severe burns.
6 Remove the fasteners securing the access
covers at the rear of the machine. Remove the
access covers.
7 Tag, disconnect and plug the hoses at the
hydraulic tank. Cap the fittings.
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.
8 Attach a lifting strap from an overhead crane to
the top of the hydraulic tank. Support the tank.
Do not apply any lifting pressure.
9 Remove the tank mounting fasteners. Lower the
tank through the chassis to remove the tank
from the machine.
Crushing hazard. The hydraulic
tank could become unbalanced
and fall if not properly supported
when removed from the machine.
4 - 39