How to Convert Jeep WJ 4.7L Hydraulic Fan to Mechanical | Step-by-Step

Does your Jeep WJ 4.7L keep having hydraulic fan problems? In this video, I show you how to do a full hydraulic to mechanical clutch fan conversion on a Jeep Grand Cherokee WJ (4.7L V8). This swap is a common upgrade that improves reliability, saves money, and keeps your Jeep running cool on and off-road.

✅ Step-by-step instructions
✅ Tools & parts list included
✅ Tips for removing the old hydraulic fan system
✅ Installing the new mechanical clutch fan setup
✅ Test results and cooling performance

If you’re tired of dealing with hydraulic fan leaks, noisy pumps, or expensive replacements, this DIY conversion is a must-see.

👉 Works on 1999-2004 Jeep Grand Cherokee WJ 4.7L V8.

As an Amazon Associate I earn from qualifying purchases:
Fan Clutch: https://amzn.to/4paCtfA
Fan blades: https://amzn.to/4n0FJZi
Power Steering Pump: https://amzn.to/4pry48n
Power Steering Hose: https://amzn.to/4n0GaCU
Fan Shroud (worked but not perfect): https://amzn.to/4lZBEU0

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#JeepWJ #JeepDIY #FanClutch #JeepGrandCherokee #JeepLife #OffRoadJeep #JeepMods #4x4DIY #OverheatingFix #MechanicalFan

0:00 Intro into the hydraulic to mechanical fan clutch swap 4.7l jeep wj
0:49 parts needed to swap from hydraulic to mechanical fan clutch 4.7l jeep wj
1:28 why swap from hydraulic to mechanical fan - a/c doesn't work and temps high 4.7l jeep wj
5:08 removing the power steering lines from the fan 4.7l jeep wj
9:00 unplug electrical from hydraulic fan 4.7l jeep wj
9:49 remove high pressure lines from gearbox and pump 4.7l jeep wj
12:02 remove upper and lower radiator hoses 4.7l jeep wj
15:23 remove radiator and hydraulic fan from 4.7l jeep wj
17:07 remove and replace power steering pump for 4.7l jeep wj hydraulic to mechanical fan conversion
19:33 install new high pressure line on power steering pump for 4.7l jeep wj fan conversion hyd to mech
21:17 assemble and mount new fan to fan clutch on 4.7l jeep wj
22:25 new fan shroud problems and what to do about it 4.7l jeep wj hyd to mech fan conversion
23:46 installing new fan shroud to radiator 4.7l jeep wj hydraulic to mechanical fan conversion
25:07 putting radiator and new fan clutch into engine bay 4.7l jeep wj mechanical fan install
26:53 install summary and testing fan clutch conversion 4.7l jeep wj
33:14 outro and final thoughts
35:12 is the swap worth it? hydraulic fan to mechanical fan clutch diy conversion