Fan Shroud Removal Procedure

[Full-Timers]

Lower Shroud Removal

• Using a screwdriver pry the 3 staples from the junction of the upper and lower shroud.
• Remove the metal clips from the junction of the upper and lower shroud.
• If equipped remove the screws attaching the lower shroud to the lower radiator support.
• Push up on the lower shroud to remove it from the 2 large clips holding it to the lower radiator support.
• Work lower shroud around lower radiator hose and oil cooler lines and remove shroud.

Upper Shroud Removal
This is not an easy task

• Remove air intake duct from Throttle body so that duct can be moved.
• Remove PCM/TCM bracket retaining bolts so the PCM/TCM can be moved.
• Remove the Fan Shroud screws from center and both sides of upper shroud.
• Work upper shroud around fan and remove.

Your shroud may be mounted different.

[ron55]

If you use a 180 degree thermostat, can you do away with the fan shroud?
I did on my jeep with no problem.

[oemtech]

Quote:

Originally Posted by ron55 If you use a 180 degree thermostat, can you do away with the fan shroud? I did on my jeep with no problem.

No..... I have a a 180 installed.

[cannon man]

so what are the bennys of the 180 stat?
thanks, dave

[oemtech]

Quote:

Originally Posted by cannon man so what are the bennys of the 180 stat? thanks, dave

It just runs a bit cooler in the Texas heat....

OBTW - It is raining... had almost 1" so far.

[DriVer]

Quote:

Originally Posted by cannon man so what are the bennys of the 180 stat? thanks.

There is no question that 180° thermostat will allow the engine to run cooler however that said the 195° is designed for the emission control package and the proper operation of the engine.

Having researched this thing quite a bit lately, folks using a 195° T-Stat can exhibit 202° to 205° temperatures. How much lower than that would we want to bring down the temperatures? Remember this engine is an internal combustion engine and requires heat to do what it knows how to do best. I know that the needle will begin coming off the peg at 225° and even then the engine is not yet in an overheat condition. It's just running hot.

The best practice is to make sure that the overhead fabric is in place (top of radiator) and that the side curtains both left and right are in place and are pressing in on the sealing surfaces.

I ran a 206° all the way from Virginia coming home.

[Full-Timers]

Quote:

Originally Posted by ron55 If you use a 180 degree thermostat, can you do away with the fan shroud? I did on my jeep with no problem.

I would have to disagree with you on that one. I know when my fan ate part of the upper shroud it started running hotter than I have ever seen. I doubt a 180 degree thermostat would have brought it back to normal. Also as mentioned, you might lower your engine temps but you still need as much airflow as possible through the cool pack to cool the transmission properly.

[DriVer]

Quote:

Originally Posted by Full-Timers I would have to disagree with you on that one. I know when my fan ate part of the upper shroud it started running hotter than I have ever seen. I doubt a 180 degree thermostat would have brought it back to normal. Also as mentioned, you might lower your engine temps but you still need as much airflow as possible through the cool pack to cool the transmission properly.

FT, The question was put forward, can you do away with the shroud and use a 180° T-Stat?

As you know, the short answer is "No" One needs to have enough heat building up in the vicinity of the clutch fan or that will never kick in. If additional cooling is required when climbing a grade or whatever load circumstance presents, the cool pack will be defeated without the use of shrouds. If this were a relevant thought, why run a T-Stat at all? That does not make sense and running a 180° with no shroud does not make any sense as well. These machines no longer have a great amount of redundancy in the cooling system peripherals. Everything needs to be in place in order to be a cool runner.

Run the OE 195° T-Stat and properly installed shroud and in so doing the average unit (most all) will run as designed. I'm not blasting folks that do the mod but my research with professionals that do this day in and day out give me confidence not to not be hurried to change the baseline configuration of the cooling system.