LM 287 User Manual – 30.10.2023
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Failure to replace your thermostat on a regularly scheduled basis could
cause severe engine damage.
Perkins engines incorporate a shunt design cooling system and require
operating the engine with a thermostat installed.
If the thermostat is installed incorrectly, the engine may overheat, causing
cylinder head damage. Ensure that the new thermostat is installed in the
original position. Ensure that the thermostat vent hole is open.
Do not use liquid gasket material on the gasket or cylinder head surface.
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance
of inspection, maintenance, testing, adjusting and repair of the product. Be
prepared to collect the fluid with suitable containers before opening any
compartment or disassembling any component containing fluids.
Dispose of all fluids according to local regulations and mandates.
If only the thermostat is replaced, drain the coolant from cooling system to
level that is below the thermostat housing.
Removal procedure:
1. Drain the coolant from the cooling system into a suitable container for storage or disposal.
Figure 114
2. Disconnect harness assembly (3) from coolant temperature sensor (4).
3. Remove bolt (2) and clip (1).
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