33. On the right side of the water pump there is a cap. Remove the cap. Slide the
½”
ID heater
hose onto the steel pipe and attach with a hose clamp provided. Insert the 1/2-3/8 reducer at
the end of the hose. This is the suction fitting.
34. Locate the hoses on the left rear of the cab. Route the pressure hose towards the pressure
fitting. Ensure that the hose does not interfere with any moving parts. Cut the hose and then
connect it to the pressure fitting. Use zip ties to tidy up the hose. Use the provided HS-6 hose
clamps to secure the hose to the fitting. Route the other hose to the return fitting, ensuring
that it does not interfere with any moving parts. Cut any excess length, and connect to the
suction fitting with the provided HS-6 hose clamps.
35. Make sure all fitting connections are tight and the hoses are properly secured to the
machine. Re-fill the engine antifreeze. Go to the cab, and turn the heater control switch to the
maximum heat side. Start the engine and turn the cab fan to the highest speed setting. Take
the radiator cap off the engine and place a funnel into the radiator. Fill the funnel with
antifreeze. The engine will need to run for a few minutes and the thermostat open a few times
in order for all air to be purged from the heater system. The air at the cab louvers should be
very hot when that occurs. NOTE: ensure adequate fresh air ventilation in the work space you
are in, carbon monoxide from the engine exhaust is deadly.
36. To ensure a better seal of all weather stripping and floor mat pieces, it is recommended that
you use a black silicone seal to seal the cab parts to the tractor.
If cab is equipped with air conditioning, proceed with the following steps.
37. Remove the alternator and tensioner bracket from the engine, saving the fasteners to re-
use later.
38. Remove the engine lift ear at the front of the engine. Remove the over-flow bottle.
June 2021© Kubota Fx80 Series ROPS Cab Installation Manual
