Can someone identify this?


2018 5.0 V8 F150 Lariat Super Crew

 

Looks like belt tensioner to me. It would help if you posted full vehicle details for us, otherwise we assume we're working on a 1977. LOL

 

Haha! True! Sorry, i updated the post. Its a 2018 V8 5.0 F150 Lariat Super Crew

 

I think that may be the air conditioner belt tensioner.

Air Conditioning (A/C) Compressor Belt Tensioner

Removal

NOTE

Removal steps in this procedure may contain installation details.

1. With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview(100-02 Jacking and Lifting, Description and Operation).
   

1. Rotate the A/C (air conditioning) compressor belt tensioner clockwise and position the belt aside.
   

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1. Remove the bolt and the A/C (air conditioning) compressor belt tensioner. Torque: 18 lb.ft (25 Nm)
   

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Installation

1. To install, reverse the removal procedure.
   

1. After installation, make sure the accessory drive belt is correctly seated on all pulleys.
   

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1. After installation, make sure the A/C (air conditioning) compressor belt is correctly seated on all pulleys.
   

Click here to learn about symbols, color coding, and icons used in this manual.

 

Wow! That's it! Thank you so much. I do have a follow up question.

It mentions lifting the truck and having it in neutral. Since ill be keeping it in 2wd can I just lift the rear only? Or do I still have to lift the whole truck?

 

You don't have to lift the truck on a hoist or otherwise, work on the A/C tensioner from above. You use a 3/8 inch rachet wrench to move the tensioner to loosen the belt. If replacing the A/C belt, as I recall, you have to remove the belt for the alternator-water pump first. You access this tensioner from under the vehicle. Removing the air dam aids in the ''crawling under" process.

 

Have the same truck, Yup, reg boule is accurate. The A/C belt is behind the heavier alternator water pump belt and their tensioner need to be loosened enough to clear the A/C belt out. The idler pulley is directly above the A/C tensioner. At 160K miles mine was providing tension but otherwise frozen. Was time to replace everything belt related, and water pump, thermostat, T Pipe, and change to yellow coolant. Prep for a 6,000 mile trip in a truck With sketchy history.

 

what is yellow coolant?? I have to refill every couple of days. Im pretty sure I found the weak connection. It was a little difficult since it only seems to leak when im driving and no leaking when im parked...
Mine is at just about 160k too

 

I recently went through something similar with my wife's expedition with the 3.5 EB. Every time I would find a leak, I replaced the hose, it went from hose to hose with the leaks. Turned out to be the thermostat, it was sticking and caused excess pressure. Good luck, it was a pain to troubleshoot and find the issue.

Tom

 

yellow coolant is Fords replacement for the orange about 2019 in the trucks. Reportedly for improved cooling under certain conditions, however orange was suspected and documented of creating sediment in the radiator. Those two types are compatible. I elected to flush out as much of the orange with distilled water prior to yellow switch. On the 5.0, about half the total amount remained in the system ( water pump out) so 2 gallons of 100% yellow made about the proper ratio. Not sure about other engines. Best info I have.