4440 over heats

Brownie450 · Apr 15, 2023

The 4440 over heats pulling a 18 foot disc
with a 4 section harrow behind. It is an
80 degree day, so warm out. This was going
on last fall on the disc with 80 degree temps.

After 2 hydraulic line [rubber hoses up front
at pump] blow outs last year we've had to clean
the radiator & AC cooler to get dirt out.
Degreaser has been used to clean up the radiator
cooling & pressure washing everything. Fan belts
are checked & coolant level is up.

Anyone had trouble along these lines? I'm guessing
new thermostat time maybe??
Thanks for any ideas.
Jim

coonie minnie · Apr 15, 2023

How long has it been since the radiator has been flushed? Taking it to a radiator shop to have the core flushed out is a good place to start.

Thermostats could be an issue as well.

rrlund · Apr 15, 2023

It didn't take too many years from new for my 4040 to start over heating. The radiator tubes were plugged with some black carbon looking stuff. I had to have it re cored.

NY 986 · Apr 15, 2023

Never had an issue with overheating but do flushes as part of routine maintenance. I've had good luck with the products (Castle power flush) sold at the auto parts store. Thorough instructions on the bottle must be followed including rinsing. The neighbor did not and wound up putting new O rings on the engine liners. Anyways, a pile of crud came out of cooling systems that had no heating issues. The heater knob in the cab turned flawlessly after the flush. May not solve your problem but for the cost and not having to pull the radiator it would be worth a shot.

Tx Jim · Apr 15, 2023

Do fan belts flat back side protrude above belt pulley edges?

Brownie450 · Apr 15, 2023

Thanks for the replies.
TJ-----the belts were new a year ago, so they
have plenty of traction.
Looks like a rad. flush might be worth a shot
before thermostats.
Jim

Tx Jim · Apr 15, 2023

The pully sheaves angled sides with enough hrs of use can wear sufficiently that new belts won't grip pully's slanted sides very well.

NY 986 · Apr 15, 2023

In that situation minimal effort is needed to slip the fan blade hub via pulling with a hand even with good belt tension.
Something to look at for sure.

NoDakInMN · Apr 15, 2023

Thermostats are cheap and easy, and I would do that before assuming the radiator is fouled. Also, checking the pulleys on the fan first is also cheap and easy. People often do not realize how much a worn pulley reduces fan speed. Pulleys should be flat and angular on the sides, if there is any signs of grooving, your belt is riding too far down in the pulley and fan speed is greatly reduced,

Muir hill 101 · Apr 15, 2023

Has the radiator and block ever been flushed in the last 40 years? Drain get a good flushing agent refill and run do that twice or 3 times unless its really scaled up then youll have to pull the radiator and have it cleaned at a radiator shop .

buickanddeere · Apr 15, 2023

.
Will guarantee that the coolant pump/fan pulleys are worn . As is the alternator pulley .
May not be the entire problem but is most definitely a contributing factor .

Brownie450 · Apr 16, 2023

Thanks again, guys for all of the help.
Got involved with tile hole repairs so didn't
have time to check the fan pulleys. That sounds
like it might be some of the problem.

Was interested in 2 guys having black material
in the cores of the rad. How would that be possible
unless the antifreeze/ coolant was contaminated?
This tractor has always had cool guard & changed
on schedule.
I'll keep an update when I find more info.
Jim

buickanddeere · Apr 16, 2023

(quoted from post at 08:39:00 04/16/23) Thanks again, guys for all of the help.
Got involved with tile hole repairs so didn't
have time to check the fan pulleys. That sounds
like it might be some of the problem.

Was interested in 2 guys having black material
in the cores of the rad. How would that be possible
unless the antifreeze/ coolant was contaminated?
This tractor has always had cool guard & changed
on schedule.
I'll keep an update when I find more info.
Jim

Don t ignore the alternator pulley .

Muir hill 101 · Apr 17, 2023

Were you able to get all the oil and grease and degreaser out of the radiator and any other coolers stacked in front of it ? Most of the time its pretty hard to get clean without pulling them out to steam clean them

Brownie450 · Apr 17, 2023

You guys with the worn pulley advice are
right on the money. All I ever do is check
fan movement front & back for water pump
bearing play. Then try for slip using the
alternator fan. Belts are tight, but I can
easily move the fan. Sooooo- I need to get
a new pulley & a new set of belts as well.

Yes, getting the oil out of the radiators
is a bear. Even using a pressure washer with
degreaser is hard to get it all out.

Thanks again guys for the help.
Jim

Brownie450 · Apr 18, 2023

Can the pulley be replaced with the radiator
in place? Should the cowling be set back to
gain access>
Jim

Tx Jim · Apr 18, 2023

One must loosen fan shroud from radiator & move it rearward. Place a piece of cardboard between fan & radiator to protect rad fines & knuckles. Then R&R fan & WP pully.

wore out · Apr 18, 2023

If the thermostats haven't been changed in the last 5 or 10 years, replace them as well.

The odds are that they aren't both working correctly.

Brownie450 · Apr 18, 2023

Thanks much for that advice, TX. Couldn't remember
how much we stripped down when doing the water pump.

Will have to do the thermostat thing as was mentioned
because of age. One stat might be sticking raising
the temp.
Jim

Brownie450 · Apr 19, 2023

Much obliged to everyone for their help on
this overheating thing. Tx Jim is very knowledgible
on so many things, & also everybody else who helped
with experience & tips.

The new pulley was twice as heavy as the old one. It
is thicker where it bolts up to the WP flange, so I
put in 3/8 longer bolts. Can't figure why they didn't
use lock washers on those, but I put them back in
with no locks.
The fan can't be turned by hand now, so we'll have to
see when we get back in the field. Supposed to rain
tomorrow.
Thanks again, guys.
Jim

4440 over heats

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