Coolant Temperature And Oil Pressure Gauages - Genie Z-45/25 Service Manual

Section 7 • Repair Procedures
PERKINS 104-22 ENGINE
8-3
Coolant Temperature and Oil
Pressure Gauges
The engine coolant temperature gauge is an
electrical gauge. The engine coolant temperature
sending unit has limit contacts that are factory set.
The contacts will close at approximately 221
o
(105 C). When the contacts close, the engine will
shut off to prevent damage and will not start until
the temperature drops below the contact point.
Engine coolant temperature will be indicated on the
gauge when the key is
Button is pulled out to the
Component damage hazard.
Do not crank the engine with
the over-temperature light on.
The engine oil pressure gauge is an electrical
gauge. The engine oil presure sending unit has
limit contacts that are factory set. The contacts will
close at approximately 4.2 psi (0.3 bar). When the
contacts close, the engine will shut off to prevent
damage. Engine oil pressure will be indicated on
the gauge when the engine is running.
Component damage hazard.
Do not crank the engine with the
low oil pressure light on.
7 - 44
o
and the Emergency Stop
ON
position.
ON
Genie Z-45/25 & Genie Z-45/25J
How to Remove the Coolant
Temperature and Oil Pressure
Gauge Sending Units
1 Tag and disconnect the wiring from the desired
F
sending unit. Remove the sending unit from the
engine block.
2 Install the new sending unit. Do not over tighten.
3 Connect the wires to the new sending unit.
Water temperature sending unit specifications
Torque
Hex size
Temperature switch point
Oil pressure sending unit specifications
Torque
Hex size
Oil pressure switch point
First Edition • Second Printing
Perform this procedure with the
engine off.
Burn hazard. Contact with hot
engine fluids or components may
result in severe burns.
Always use pipe thread sealant
when installing a sending unit.
8-18 ft-lbs
221° F (105° C)
8-18 ft-lbs
4.2 psi
Part No. 52709
11-24 Nm
7
/ inch
8
11-24 Nm
7
/ inch
8
0.3 bar