Genie GS-2668 RT, Service Manual

Page: 87 / 184

Section 4 • Repair Procedures
REV C
November 2008
Part No. 112657 GS-2668 RT • GS-3268 RT 4 - 25
How to Install the Flex Plate
1 Install the flex plate onto the flywheel with the
raised spline toward the pump.
Note: Install the coupler onto the pump shaft with
the set screw towards the pump. Leave a
1
/
32
inch / 0.8 mm gap between the coupler and
pump end plate. Apply Loctite
®
removable thread
locker to the coupler set screw and torque the set
screw to 65-70 ft-lbs / 88-95 Nm.
2 Apply Loctite
®
removable thread locker to the
flex plate mounting fasteners. Torque the flex
plate mounting fasteners to 36 ft-lbs / 49 Nm.
Component damage hazard. Do
not force the drive pump during
installation or the flex plate splines
may become damaged.
4-5
Coolant Temperature and Oil
Pressure Switches
The engine coolant temperature switch is a
normally open switch. The switch contacts close at
approximately 225
°
F / 107
°
C. If the coolant
temperature rises above the switch point, the
switch contacts close and the engine will shut off to
prevent damage. The engine will not start until the
temperature drops below the switch point. An over-
temperature indicator light at the ground controls
should turn on when the switch closes.
The engine oil pressure switch is a normally closed
switch. The switch contacts open at approximately
7 psi / 0.48 bar. If the oil pressure drops below the
switch point, the contacts open and the engine will
shut off to prevent damage. A low oil pressure
indicator light at the ground controls should turn on
when the switch opens.
How to Replace the Coolant
Temperature and Oil Pressure
Switches
1 Open the engine side cover and pull up on the
lock pin on the engine pivot tray located under
the radiator. Swing the engine pivot tray out and
away from the machine to access both
switches.
a b c d e
f
KUBOTA D1105 and D905 ENGINES
a pump
b pump shaft
c pump coupler
d flex plate
e flywheel
f
1
/
32
inch / 0.8 mm gap