Good luck man!
Let us know bro!
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
It's all in, a fairly easy job. It took me 6 hours, but messing with the passenger side nuts added extra time. Removing the transmission crossmember and lowering the transmission helps, but a 13mm crows-foot makes it happen, I only had a 1/2" but it's interchangeable. The fuel tank skid plate added to the difficulty as well. I had to remove the transfercase motor from the transfercase and bend a corner of the fuel tank skid plate to get the transfercase up past it. I simply bent the corner back afterwards. An adjustable wrench works well for this.
Attached are pictures of the end of the nag transmission, the NV245 and NV140 transfercase and finally a picture comparing the NV245 drivetrain to the NV140 drivetrain. The NV140 is about half the weight of the NV245.
I have tested shifting the transfercase and the transfercase is shifting correctly, next is to test drive it, check for vibrations with the used driveshafts and to test for low lock errors.
Last edited by cmdr jim; 05-19-2012 at 02:08 PM.
06 Red Jeep XK 3.7L V6 QT1, RC 2" with 1/2", 1-1/4" Wheel Spacers, Rubicon Moab Rims, Grabber AT2 LT265/70-17, Rocky Road Supersliders, Fastman Throttle-body, K&N Cold Air Filter, JBA Headers, Front Tow Hooks, 2" receiver front & rear, Wired for winch front & rear, ARB Onboard Air, Trans Temp Gauge, Aux Trans Cooler, Sport Roof Crossbars, Skid Plates, RS5010 Rear Shocks, JKS 2034 Front & 2001 Rear Disconnects
Test results so far. No vibrations up to highway speeds. If anything the drivetrain feels tighter. I did notice the NV140 had more backlash than the NV245. My NV140 has 66000 miles and the NV245 only had 11000 miles, that may be the reason. Also, I did a final drain on the NV245 and what oil drained looked very good.
I tested with the Jeep in gravel, High to High lock works and Low and Low Lock work. The speedometer is correct even in Low Lock. No "Check Engine Light" the first time I used Low Lock, I left the transmission in drive.
The second test I shut off the Jeep then restarted and shifted the transmission to 1st gear, I ended up with a Check Engine Light, Code "P0700". I don't think it went into Limp Mode. I shut it off and put the transfercase into High, tried resetting the fault with HyperTech, but it didn't remove the "Check Engine Light", however the Jeep shifted correctly and I can manually shift through all the gears. More testing I need to understand this.
Last edited by cmdr jim; 05-19-2012 at 03:50 PM.
06 Red Jeep XK 3.7L V6 QT1, RC 2" with 1/2", 1-1/4" Wheel Spacers, Rubicon Moab Rims, Grabber AT2 LT265/70-17, Rocky Road Supersliders, Fastman Throttle-body, K&N Cold Air Filter, JBA Headers, Front Tow Hooks, 2" receiver front & rear, Wired for winch front & rear, ARB Onboard Air, Trans Temp Gauge, Aux Trans Cooler, Sport Roof Crossbars, Skid Plates, RS5010 Rear Shocks, JKS 2034 Front & 2001 Rear Disconnects
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