In Reply to: Re: R62 air conditionimg posted by NowGleaner7 on July 11, 2008 at 17:26:21:

Depending on the year, the earlier R62's had smaller outlets and hoses out of the fan box to the pillars and cab outlets.

We cut out the tubes in the fan box and installed larger hoses to get more airflow.

Top of the cab was painted a highly reflective glossy white which definitely helped particularly as it only took a few minutes and dollars.

Side windows and door got the sun shade material that is often used in vechiles windows and windscreens to lower temps inside.

As Tbran says and we have done; install heavy relays, 3 of, one for each speed, in our case under the cab with a heavy lead to the battery and use the cab switch to trip the appropriate relay for the fan speed.

Makes quite a difference.

If a piston compressor and a Cummins, there is a flange on the engine / combine drive pulley which on the duetz is used to drive the compressor.

We got a V belt groove machined in the flange and shifted our compressor to this location to the left rear of the engine.

This will lower compressor head temps compared to the position just behind the radiator and also makes for a lot easier maintenance.

Check that your heater hoses are right off at the engine.

We removed the heater coil in the fan box to allow more air flow through the cooling coil.

Still a long way from doing drastic surgery to brass monkeys but a big improvement over all.