Richard in Bee
Member
I have a 4640 on which the air conditioning works only sporadically. When it is not working, the clutch will cycle on and off every couple of seconds.
The compressor was replaced with a Sanden a couple of years ago, along with the dryer and exp valve. The dryer and exp valve were replaced again last spring.
Here's where it gets interesting-last year when and this spring when you adjusted the temp, the radio would go black for a second or two. Thinking that I have an electrical problem, I replaced the temp control and cleaned up a bunch of wiring and grounds up there. I also replaced the cab relay and the circuit breaker that goes to the radio and temp control. While I was at it I added what is called a clutch saver kit. Basically a relay that takes power from the positive stud on the starter and sends it to the clutch. Now that yellow wire that goes down from the cab across the engine to infant of the radiator and back to the clutch only serves to close the relay.I also added a new ground wire from the tractor frame to the Sound Gard.
There has been little change, except that now when you change the temp, the radio only darkens for a fraction of a second.
When the AC decides to work, maybe, possibly, sort of has something to do with if you have the sprayer monitor on, but not always.
I am tempted to run a new hot wire from the relay/circuit breaker area under the cowl up the window seam and directly to the temp control, thinking somewhere there seems to be an interruption in electrical flow.
Anyone have any other ideas?
The compressor was replaced with a Sanden a couple of years ago, along with the dryer and exp valve. The dryer and exp valve were replaced again last spring.
Here's where it gets interesting-last year when and this spring when you adjusted the temp, the radio would go black for a second or two. Thinking that I have an electrical problem, I replaced the temp control and cleaned up a bunch of wiring and grounds up there. I also replaced the cab relay and the circuit breaker that goes to the radio and temp control. While I was at it I added what is called a clutch saver kit. Basically a relay that takes power from the positive stud on the starter and sends it to the clutch. Now that yellow wire that goes down from the cab across the engine to infant of the radiator and back to the clutch only serves to close the relay.I also added a new ground wire from the tractor frame to the Sound Gard.
There has been little change, except that now when you change the temp, the radio only darkens for a fraction of a second.
When the AC decides to work, maybe, possibly, sort of has something to do with if you have the sprayer monitor on, but not always.
I am tempted to run a new hot wire from the relay/circuit breaker area under the cowl up the window seam and directly to the temp control, thinking somewhere there seems to be an interruption in electrical flow.
Anyone have any other ideas?