Raise the lift arms and install an approved lift arm support device. (See Installing Lift Arm Support Device on Page 10-20-1.)
Turn the fan switch (Item 1) to position 1. Turn the temperature control (Item 2) [Figure 80-30-28] to the High cold position, with the loader ignition switch OFF.
Raise the operator cab. (See Raising The Operator Cab on Page 10-30-1.)
Connect the remote start tool to the loader. (See REMOTE START on Page 10-60-1.)
Place the remote start tool on the left fender of the loader, so the heater valve can be clearly seen. Watch the valve shaft (Item 1) [Figure 80-30-29], as the key of the remote start tool is turned to the ON position without starting the loader. The heater valve should rotate. Place a mark on the loader shaft.
Turn the key of the remote start tool to the OFF position and remove the remote start tool from fender.
Lower operator cab.
Turn the temperature control (Item 2) [Figure 80-30-28] to the High Heater position, with the loader ignition switch OFF.
Raise the operator cab.
Place the remote start tool on the left fender of the loader, so the heater valve can be clearly seen. Watch the valve shaft (Item 1) [Figure 80-30-29], as the key of the remote start is turned to the ON position without starting the loader. The heater valve should rotate.
If it does not rotate, check the potentiometer for proper function. (See Checking The Electrical System on Page 80-30-3.)
Replace the heater valve. (See Removal and Installation (Contโd) on Page 80-80-2.)
