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Fixed my AC yesterday...glorious cool

C

cuttin edge

Senior Member
Joined
Nov 9, 2014
Messages
2,736
Location
NB Canada
Occupation
Finish grader operator
As I said, my Mauldin runs cold, around 150. This summer it has been slowly creeping up to normal running temp. We were shouldering the road on Tuesday. Hot day, 3 day old asphalt, 500 bucks a pop for each mark in the new pave. Gauges above my head, trying to watch so as not to mark the pave. Engine starts to die, first thought, running out of fuel. Look up, 250 degrees, engine dies. Started her up to get her on the float. Knocking, 5 pounds of oil pressure. Next day. engine dry of antifreeze, but rad tank full. Checked the other Mauldin, tank full. Poured 2 gallons in. Poor set up.
 
RollOver Pete

RollOver Pete

Senior Member
Joined
Mar 5, 2007
Messages
1,510
Location
Indio, Ca
Occupation
Operating Engineer/mechanic
Birken Vogt said:
Very non-specific as to what it is. Can't find a MSDS. I would guess it is some propane/butane combination. The government will shut them down if they get noticed enough.
Click to expand...

It took just over 2 cans to charge up my system on my 2006 Dodge Ram. I'm not sure if it's propane, butane, laughing gas or diesel smoke. And honestly, I really don't care. Not today anyways. What I do know is that my thermometer shows 40-45* at the vents, recirculating mode, fan at medium setting after about 10 minutes. My high side pressures are much lower also. Easier on hoses, seals and compressor? Who knows? But a high of 195 psi works for me. I plugged my laptop in for the ride home from work Tuesday.
This is what the numbers looked like.

20200821_185315.jpg
 
RenoHuskerDu

RenoHuskerDu

Senior Member
Joined
Sep 17, 2018
Messages
359
Location
Texas
cuttin edge said:
As I said, my Mauldin runs cold, around 150. This summer it has been slowly creeping up to normal running temp. We were shouldering the road on Tuesday. Hot day, 3 day old asphalt, 500 bucks a pop for each mark in the new pave. Gauges above my head, trying to watch so as not to mark the pave. Engine starts to die, first thought, running out of fuel. Look up, 250 degrees, engine dies. Started her up to get her on the float. Knocking, 5 pounds of oil pressure. Next day. engine dry of antifreeze, but rad tank full. Checked the other Mauldin, tank full. Poured 2 gallons in. Poor set up.
Click to expand...

So the motor was out of coolant but the expansion tank was full? Or the radiator was full? If your thermostat seizes closed it would keep coolant in the radiator and not allow it in the motor. Coolant in the motor would eventually boil away. Maybe that's what's happening.

Does not sound good, in any case, 5 psi oil pressure is too low to protect the various bearings and cam lobes
 
C

cuttin edge

Senior Member
Joined
Nov 9, 2014
Messages
2,736
Location
NB Canada
Occupation
Finish grader operator
The tank is on top of the rad, but not part of the rad. I would guess she turned a bearing. The motor was shipped off to a deutz dealer for reman. Hopefully they don't take too long. Crazy busy this year. People are not traveling, so they are spending money on pools, decks and asphalt
 
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