| Tools Needed | Quantity |
| 4C-6500 Digital Thermometer | 1 |
| 1U-5470 Engine Pressure Group | 1 |
| 8T-5296 Coolant Conditioner Test Kit | 1 |
| 9S-8140 Pressurizing Pump | 1 |
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| Illustration 1 | g00286267 |
4C-6500 Digital Thermometer | |
The 4C-6500 Digital Thermometer is used in the diagnosis of overheating conditions and overcooling conditions. This group can be used to check temperatures in several different parts of the cooling system. The Operating Manual, NEHS0554 is provided with the thermometer.
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| Illustration 2 | g00295554 |
1U-5470 Engine Pressure Group | |
The 1U-5470 Engine Pressure Group can be used to measure the pressures in different parts of the cooling system.
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| Illustration 3 | g00768793 |
8T-5296 Coolant Conditioner Test Kit | |
The 8T-5296 Coolant Conditioner Test Kit is used to measure the concentration of Caterpillar Supplemental Coolant Additive. Insufficient concentrations or excessive concentrations can lead to engine damage. Instructions are provided with the kit.
Note: The 8T-5296 Coolant Conditioner Test Kit tests the concentration of nitrites in the coolant. Some types of coolant additives have phosphates rather than nitrites. If the additive in the cooling system has phosphates, test the coolant according to the instructions that are provided by the OEM of the additive.
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| Illustration 4 | g00286369 |
9S-8140 Pressurizing Pump | |
The 9S-8140 Pressurizing Pump is used to test the filler cap, the pressure relief valve, and the pressure gauge.