VALVE GP-SOLENOID 1471223 - Caterpillar

Table 3
Tools Needed     Quantity    
9S-8140     Pressurizing Pump     1    Use the following procedure to check the pressure in the cooling system:
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
After the engine is cool, loosen the filler cap slowly and allow pressure out of the cooling system. Then remove the filler cap from the radiator.
Make sure that the coolant level is above the top of the radiator core.
Illustration 7 g00286374
9S-8140 Pressurizing Pump
Put the 9S-8140 Pressurizing Pump onto the radiator.
Take the pressure reading on the gauge to 20 kPa (3 psi) more than the pressure on the filler cap.
Check the radiator for leakage on the outside.
Check all connection points for leakage, and check the hoses for leakage.The cooling system does not have leakage only if the following conditions exist:.
You do NOT see any outside leakage.
The reading remains steady after five minutes.The inside of the cooling system has leakage only if the following conditions exist:
The reading on the gauge goes down.
You do NOT observe any outside leakage.Make any repairs, as required.Test For The Water Temperature Gauge
Table 4
Tools Needed     Quantity    
4C-6500
or
2F-7112     Digital Thermometer
or
Thermometer     1    
Illustration 8 g00300299
Water Temperature Connection (1) Water temperature regulator housing. (2) Plug. (3) Plug.Check the accuracy of the water temperature indicator or water temperature sensor if you find either of the following conditions:
The engine runs at a temperature that is too hot, but a normal temperature is indicated. A loss of coolant is found.
The engine runs at a normal temperature, but a hot temperature is indicated. No loss of coolant is found.Coolant temperature can also be read on the display screens of the Electronic Service Tool (ECAP or ET).Remove one of the plugs (2) or (3). Install one of the following thermometers:
The 4C-6500 Digital Thermometer
The 2F-7112 Thermometer A temperature indicator of known accuracy can also be used to make this check.
Personal injury can result from escaping fluid under pressure.If a pressure indication is shown on the indicator, push the release valve in order to relieve pressure before removing any hose from the radiator.
Illustration 9 g00300300
Water Temperature GaugeStart the engine. Run the engine until the temperature reaches the desired range according to the test thermometer. If necessary, place a cover over part of the radiator in order to cause a restriction of the coolant flow. The reading on the water temperature indicator should agree with the test thermometer within the tolerance range of the water temperature indicator.
Table 5
Pointer
Position     Test
Thermometer
°C     Test
Thermometer
°F    
1     65 to 77     150 to 170    
2     99 to 103     210 to 218    Water Temperature