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Front HVAC Swap and general maintenance on 2014 Fleetwood Discovery 40G 6-2017 PART 3

Posted 06-21-2021 at 02:31 PM by MEWright
Updated 06-22-2021 at 04:17 PM by MEWright

PART 3

I decide to write this to hopefully someone else can see how amazingly easy this task is. Start to finish 2 hours, 2 people 1 ladder.

17 and 18 pics are here for opening the case and finding the plug

19. UNPLUG THE UNIT

20. Remove the temp sensor, it simply pushes into the coil . Be very careful not to damage this. Make note of sensor location so you can reinstall it in similar location in new unit
21. Set new unit in place carefully.
AFTER YOU MEASURE EVERYTHING. You may need to adjust openings but I did not so I will not go into detail. Good luck if you need to..

22-26 are all pictures of the same operation in reverse.

Install temp sensor in location on new unit where you removed it from old unit

Plug in unit

Install all case screws

Install 4 mounting screws, leave loose until all are started then tighten them

Install roof pookie sealant over all screws as shown

Install foil tape along all seams of the new case, not required but I would recommend.

Before installing new cover, test unit functions. Once it has started and run for a minute or 2, fan and compressor so you feel cold blowing inside, shut it back off.

Install cowlings

Let rest for 24 hours to ensure compressor oil and Freon equalize.


This project to 1.5-2 hours, hardest part was finding the screws. If I where to change another I would estimate it to take about 30 min maybe 45.. It can be done alone but 2 people make lifting the new one up and old one down much easier.



Pro tips

NEVER TILT THE UNIT , always keep it flat ALWAYS.. Tilting or leaning on edge can cause compressor oil to leave compressor into coil causing it to fail on start up.

ALWAYS LET REST FOR 24 HOURS BEFORE FIRST REAL USE. TO ALOW OIL TO LEAVE COIL IF IT WAS LEANED OVER.

FOIL TAPE ALL JOINTS TO STOP AIR LEAKAGE.

Be safe on ladders

Put towels on roof to set tools and screws no so you don't puncture your roof.

If you are alone try to rent a manual equipment lift to raise and lower units. They are about $100 a day and can be delivered for a small fee.

I am sure many people have done this on their own and will have opinions about how I did. GREAT THANKS,, but I could not find your blog or video so I did my best and am posting this to help so go easy on the comments...

I HOPE PARTS 1 - 2 - 3 help you...
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