Electric fan for B7100HST
- Thread starter ttfo
- Start date
Look real closely and determine where one will fit! The belt on the fan hub powers the dynamo, so you'd have to figure that out also. Keep the screen clean and the radiator fins clean and the engine will run cool.
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Because the B7100 only has a low output dynamo.
A good fan will wipe out the battery in nothing flat.
If it's overheating with the mechanical fan you have an issue.
A good fan will wipe out the battery in nothing flat.
If it's overheating with the mechanical fan you have an issue.
This reminds me of a problem I had with a JD 4329 engine I own. A couple years ago it would overheat intermittently at first, but then regularly.
Cleaned the radiator, changed the thermostat, …didn’t fix the problem…..so pulled the thermostat completely….then noticed that when…looking into the radiator-cap-filler-neck…. No water movement was occurring.
Removed the water-pump…and found the impellor was not turning with the shaft…. so the water-pump-pulley being turned by the V-belt performed no actual water-pumping-work.
Replaced the water pump. Problem solved.
Just thought I’d mention an unusual type of failure for folks to add to their repertoire.
Cleaned the radiator, changed the thermostat, …didn’t fix the problem…..so pulled the thermostat completely….then noticed that when…looking into the radiator-cap-filler-neck…. No water movement was occurring.
Removed the water-pump…and found the impellor was not turning with the shaft…. so the water-pump-pulley being turned by the V-belt performed no actual water-pumping-work.
Replaced the water pump. Problem solved.
Just thought I’d mention an unusual type of failure for folks to add to their repertoire.
North Idaho Wolfman
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Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Yep…my JD 4239 had reverted to a “thermo-siphon” ….(and also failed to properly cool.)
Thanks for the reply. I do clean the screen and radiator after each use. since there is no tach, I am not sure where to put the throttle when mowing with the belly mower.
the mechanical fan moves a lot more air than most electric fans
a lot of guys in the automotive world swap the mechanical fan for an e-fan because e-fans are supposedly "cool" to have, but in the end they (most of them, almost all aftermarket fans) don't cool nearly as well as the oem installed mechanical fan.
BTDT.
a lot of guys in the automotive world swap the mechanical fan for an e-fan because e-fans are supposedly "cool" to have, but in the end they (most of them, almost all aftermarket fans) don't cool nearly as well as the oem installed mechanical fan.
BTDT.
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
torch
Well-known member
Equipment
B7100HSD, B2789, B2550, B4672, 48" cultivator, homemade FEL and Cab
I have a 95 Buick Roadmaster. The standard cooling had an electric fans. The performance package had a bigger electric fans. But the HD cooling included in the towing package has a mechanical fan. It would seem GMs engineers agree with you. ;-)
Electric fans first became popular because of FWD cars with their transverse mounted engines making the classic engine waterpump mounted fan setup impractical. As other noted, a large mechanical fan moves a lot of air and far more than the typical small electric fans.
Electric fans have their advantages with speed/airflow independent of engine speed providing good cooling and AC operation at idle and they can provide an increase in peak HP depending upon ECM and fan control setup but they aren't typically a good replacement for an engine operating at near rated RPM and output for sustained periods.
They shouldn't be used to "fix" an overheating problem in a properly designed tractor (and you B7100HST has adequate cooling when operating properly). Electric fans can also be helpful when a tow vehicle is being used beyond its design envelope by providing good low speed airflow over auxiliary engine oil and/or transmission coolers that are mounted outside of the air path of the main cooling stack. But any electric fan change has to provide for the greatly increased current draw and these "amp eating monsters" are one of the major reasons why vehicles come with very high output alternators in stock trim.
Rodger
Electric fans have their advantages with speed/airflow independent of engine speed providing good cooling and AC operation at idle and they can provide an increase in peak HP depending upon ECM and fan control setup but they aren't typically a good replacement for an engine operating at near rated RPM and output for sustained periods.
They shouldn't be used to "fix" an overheating problem in a properly designed tractor (and you B7100HST has adequate cooling when operating properly). Electric fans can also be helpful when a tow vehicle is being used beyond its design envelope by providing good low speed airflow over auxiliary engine oil and/or transmission coolers that are mounted outside of the air path of the main cooling stack. But any electric fan change has to provide for the greatly increased current draw and these "amp eating monsters" are one of the major reasons why vehicles come with very high output alternators in stock trim.
Rodger
Another reason for modern “high output” alternators is all the added electrical demands of auto-opening/closing tailgates, sliding doors, auto-deploy steps, memory-seating-positioners, dual-zone air-conditioning, heated windows, heated steering wheel, heated-and-cooled seats, engine-shut-down-start-up at each traffic-light, ….etc etc.
My wife’s Toyota Sienna “soccer-Mom-9-passenger-van” has so many electrical conveniences it probably should have a trailer to haul a ……:
My wife’s Toyota Sienna “soccer-Mom-9-passenger-van” has so many electrical conveniences it probably should have a trailer to haul a ……:
I acquired an old F2400 mower with a property i bought and the previous owner had done that. Probably because he'd also replaced the radiator with one from an old car, the set up he had was never going to work, and the thing would always overheat. I put a more appropriate radiator i found on marketplace on, (still not the right one but how much money do you want to put into a machine like this), and it works fine. I left the electric fan on there, but as everyone else already said the engine driven fan will move far more air than the electric one ever does, so i don't think it contributes much cooling effort.