Raise the lift arms and install an approved lift arm support device. (See Installing Lift Arm Support Device on Page 10-20-1.)
Raise the operator cab. (See Raising The Operator Cab on Page 10-30-1.)
Remove the heater unit from the back of the cab. (See Removal And Installation on Page 80-50-1.)
Mark the heater hoses (Item 1) [Figure 80-60-1] for proper installation.
Remove the two heater hoses from the heater coil.
Cap the hoses and the heater coil with hydraulic caps and plugs to prevent coolant loss from the system.
Installation: Tighten the two heater hose fittings to 22 ft.-lbs. (29,8 Nm) torque.
Remove the rear cover from the heater unit. (See Disassembly And Assembly on Page 80-50-2.)
Remove the three mount bolts (Item 1) [Figure 80-60-2] and remove the mount plate from the end of the unit.
Remove the two mount bolts (Item 2) [Figure 80-60-2] that support the heater coil tubelines to the unit.
Remove the two mount bolts (Item 1) [Figure 80-60-3] from the heater coil.
Remove the heater coil from the unit.
Reverse the removal procedure to install the heater coil.