New Cab Heater not working well...

Dave___in___CT · Jan 20, 2004

Here's the actual heater... other photo from Curtis site...

Tractor's temp guage goes to 4 marks max... was at 3 or 4 with low heater output...

Thermostat... dealer says only one available for the tractor... don't wanna' change it on a new machine...

Air lock... hmmm... maybe... dealer installed the unit... both hoses are warm next to heater so there's some flow...

Shutoff valve fully open...

UPDATE....

Called Curtis yesterday...
Guy says some recent heaters have a severly undersized/restricted inlet defect...
He's sending a new heater core...
Hopfully this is the problem & solution...

Thanks for all your help & suggestions... !

Dave...

spencer200 · Jan 20, 2004

When properly installed we have guys working in there shortsleve shirts in a curtis cab that heater is usually awesome. I think the flow of hot water may be bypassing somewhat causing your cooler temp.,

art · Jan 20, 2004

Good luck sounds like your problem will be solved shortly.

Golfgar4 · Jan 20, 2004

( Called Curtis yesterday...
Guy says some recent heaters have a severly undersized/restricted inlet defect...
He's sending a new heater core...
)

Glad to hear that Curtis is standing behind their product and trying to help you out. Make sure you let us know how it all turns out. /forums/images/graemlins/smirk.gif

Now all you need to do is hope that Curtis doesn't send the replacement heater with the brother of the UPS driver that delivered to Gary in Indiana before Christmas!! /forums/images/graemlins/shocked.gif /forums/images/graemlins/grin.gif

Junkman · Jan 20, 2004

Dave...... Curtis is in Worcester MA and is only about an 1 1/2 hours from you... It would have been worth the trip just to see their operation and you could have exchanged the unit yourself. Guess that it is too late since they have already shipped it to you though.....
I have been thinking of contacting them and doing a "field trip" with the other guys from the CT TBN group..... would be great if we could get a bunch of guys together for this... anyone else interested????

AndyMA · Jan 20, 2004

Junkman

I have been in the Curtis factory several times and it is quite impressive. Robotic welding, powder coating equipment large enough to handle their large plow blades, etc.

Andy

Dave___in___CT · Jan 20, 2004

Yeah... Curtis is not far away !
Hopefully the new core will be here before the weekend...

I hope the current heater core IS DEFECTIVE so the issue will be put to bed... and I have to open a cab window to stay cool... /forums/images/graemlins/cool.gif

Thanks to everyone... I'll try 'n remember to post results...

Dave...

dylan · Jan 23, 2004

Glad I'm not the only one who's heater seems not to be up to snuff. I attributed it to the large air gaps in the cab itself. Although, the air only seems lukewarm at times.
Don't forget to keep us updated.

stillwater · Jan 25, 2004

I was having a problem with the heater in my 555E - similar type setup. Turns out there was air in the heater core. I bled the heater core by removing the return line where it "T's" into the main return line of the engine. It helped a lot.

PineRidge · Jan 25, 2004

On the majority of water baseboard radiators used in the HVAC industry they use some type of small vent automatic or manual to eliminate air in the radiator so that it heats to full capacity. You would think that the manufacturers of these cab heaters might take some initiative and add the very same to their products eliminating just this sort of headache. Bleeding air would then be an easy task.