Well my rear driveshaft has been making an increasing tick/grind noise since about... last June
, so rather than have it fail at 70mph on the highway I decided to upgrade. For my 2dr auto with ~3in of lift, I knew it would be neccessary at some point I guess I was just trying to milk it as long as possible. I ordered my 1310 Tatton from Marcus @ River City Offroad, and recieved it pretty quickly. I measured 2ft exactly flange to flange to place the order, and the one I recieved from Curtis Tatton is perfect length. Anyway here goes the install...
You will need:
12pt 8mm socket
or gearwrench (those little things are amazing)
- for the bolts to remove the driveshaft
1 1/4in socket
-to remove the nut Transfer Case flange
1 5/16in socket
-to remove pinion nut (axle side flange)
for these sockets will help out
or similar apparatus
-to remove stock flanges
we had multiple, but the sledge worked best
-for shaft removal from flanges/ random anger issues that may arise
2 Jack Stands and Jack
-for setting Pinion Angle after new shaft installation
Things that help but are not entirely neccessary:
-Air tools: Impact, air wrench, etc.
-Tarp/cardboard/creeper: so you don't have to roll around on pavement
-12pk of Fat Tire
To begin with toss a wheel chock behind (and/or in front of) your tire just in case while you're working underneath it, something stupid happens and your Jeep begins to roll. (BTW You are removing the item that keeps your Jeep from moving while in park...)
I removed the axle side of the stock shaft first. Start by removing the bottom four bolts with your 8mm
then remove your wheel chock and move the jeep back a few inches so you can access the remaining four bolts. Put wheel chock(s) back in place!
Now is when you need that big hammer, take the sledge and tap the side of the flange to get that end of the shaft off. then I propped it up on top of the flange to keep it out of the way.
Move on to the Transfer Case side and remove the most accessible bolts to you, then hop in your Jeep and shift into N so you can spin the shaft. Now get the last bolts out.
Toss that old shaft off to the side (gently if you plan on selling/ giving it away)
Now it's time to check your preload on the pinion, etc. With your 1 5/16 socket and Torque Wrench
Check the torque spec on the pinion nut before
removing it with your Breaker Bar
Write it down, or make a mental note, this is torque spec you'll be using when re-installing (I also marked it with a grease pen, but due to posible differences in new flange and stock flange thickness, this may not be accurate.
Now Install new rear flange that comes with the Tatton shaft. Simple
: There is a dust shield when you remove the rear flange, I did not reuse it. I have heard of people reusing it, I really don't know the implications either way
Now, move onto the Transfer case side. Check torque spec, which should be in the 90-130lb range (may not be as important considering there is no crush sleeve, preload, etc as with the rear. Please correct me if I'm wrong). Remove nut, and install new flange.
Before installing your new flange on the Transfer Case side, put a nice bead of RTV silicone around the splines of the new flange Important!
If you don't, this will happen! Notice the wonderful spray of auto trans fluid on my undercarriage
Now that your flanges are on, grab a 12pt 8mm
(gearwrench is perfect for this) and bolt up your new Tatton Shaft! Tighten these bolts tight, but DO NOT
torque on them too hard. They are only 8mm bolts, it isn't very difficult to due some damage.
Now it is time to set your pinion angle, this important so you don't destroy your new DS. Before installing my uppers, my pinion angle was 10-12 degrees
I used RK double adjustable uppers for this. If you buy only uppers and use your factory lowers, the RK double adjustable uppers are 3/4in too long so you will need to contact them (or Marcus) to place a special order or choose another pair.
If you guys want a write up on pinion angle, I can add it to this one or make another. Just let me know!
Thanks again to Marcus @ RCO, RK, and Tatton for making this an eaasy process!