• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

cat e120b radiator

R

readsvt89

Member
Joined
May 2, 2022
Messages
8
Location
vermont
hello, new here
picked up a cat e120b 7NF04809
runs and operates good for my property, im having an issue with the machine overheating. there is no water in the oil, ive replaced the thermostat and the water pump and its deffinately helped, Ive done a radiator flush and cleaner but can tell looking down inside the radiator that the tubes are nearly corroded over. There is no shops around me that will recore a radiator so my next option is to buy new, being a greymarket machine every radiator ive found is coming out of china, and Mottrol usa has them in stock for around $700 shipped to VT, anyone have any positive to say about Mottrol or any other leads to buy a new radiator.

machine has 5000 hrs

thanks!
 
uffex

uffex

Senior Member
Joined
Jan 23, 2012
Messages
4,464
Location
Lincoln UK
Occupation
Admin
Good day
Often what gets overlooked will be the fan shroud and air passage through the core, any damage to the metal work can have a real adverse effect on temperature.
Kind regards
Uffex
 
Vetech63

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,419
Location
Oklahoma
readsvt89 said:
hello, new here
picked up a cat e120b 7NF04809
runs and operates good for my property, im having an issue with the machine overheating. there is no water in the oil, ive replaced the thermostat and the water pump and its deffinately helped, Ive done a radiator flush and cleaner but can tell looking down inside the radiator that the tubes are nearly corroded over. There is no shops around me that will recore a radiator so my next option is to buy new, being a greymarket machine every radiator ive found is coming out of china, and Mottrol usa has them in stock for around $700 shipped to VT, anyone have any positive to say about Mottrol or any other leads to buy a new radiator.

machine has 5000 hrs

thanks!
Click to expand...
The coolant absorbs the heat.......the airflow through the radiator core is what cools it. Have you checked the core for dirt or contaminants obstruction? Fan belt tightness and condition? Fan blade condition?
 
John C.

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
I believe you are correct in the assumption that you need a new core. All the other things stated here are necessary but if the inside is corroded to the point that you can see the corrosion from the fill tube, none of the rest of the points above will matter.

I have not heard of the company you speak of above but it also doesn't appear that you have any other choice. Possibly you can take measurements of what you have and explore if something else can be modified to work. Good Luck!
 
R

readsvt89

Member
Joined
May 2, 2022
Messages
8
Location
vermont
I had the shroud and fan off when I changed the water pump. Everything is free and clear of contaminants, belts are tight and good shape. Fresh antifreeze but I’m just gonna go ahead and change the radiator. Looks pretty well screwed inside( never seen one as bad as this, looks like crumpled up alum foil on the tubes), I’ll take a pic tomorrow and post it.
Thanks for the replies, can anyone give me info on the year of this machine and where I can find a service manual. Not a bad backyard machine if I can correct this issue
 
R

readsvt89

Member
Joined
May 2, 2022
Messages
8
Location
vermont
Not the best pics
 

Attachments

  • F3CF8386-061B-4AF4-BDB3-020724287A74.jpeg
    F3CF8386-061B-4AF4-BDB3-020724287A74.jpeg
    852.5 KB · Views: 10
  • 22F4B650-49E2-4653-ADED-7CA4ACA8EEED.jpeg
    22F4B650-49E2-4653-ADED-7CA4ACA8EEED.jpeg
    933 KB · Views: 10
John C.

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
I've had a hard time in the past taking good photos of inside of radiators like that. Most of the time I take them without a flash and then edit the shadows to bring out the solder bloom.

You might be able to take that to a radiator shop and have them boil it out in a hot tank. They can then redo the solder on top and bottom. The big issue is how thin the tubes are. Just rodding them out may poke holes in them. All that depends on if there are any good radiator people left to work on them any more.
 
You must log in or register to reply here.
Top