Ratech Pinion Depth Tool Ford 8.8 RAT10006

Having a Pinion Depth Tool can save you a lot of guess work setting up the Pinion.
Ratech 10006 Pinion Setting Tool amzn.to/3tvFzi7
Clean and remove any burrs or paint from the top of the pinion head.
Mount the head bearing on to the pinion shaft and install in the housing without the pinion seal or crush sleeve. Tighten the pinion nut enough to take up the slack in the bearings.
Place the pinion setting tool on top of the pinion head with the slot end of the tool in the carrier bearing journal. The end of the tool will rest against the end of axle tube surface.
With the tool being held by your left hand firmly against the top of the pinion head and the slotted end touching the face of the axle tube, insert the dial caliper with your right hand into the slot and position the depth rod so it touches the bottom of the carrier bearing journal.
Take the measurement from the dial caliper and subtract it from the dimension printed on the tool. The answer is the current checking distance of the pinion gear. Add the appropriate amount of shims to arrive at the number marked on the end of the pinion gear by the manufacturer.
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[@4sixmafia]

No 8.8 has ever needed 45 or 50 thousandths shim. .026-.034 for every 8.8 and you don’t have near enough preload on the carrier it shouldn’t just fall in like that. Without carrier preload your backlash changes as soon as you it goes under load.

[@jesstaylor3200]

Ive always been taught to do pinion preload last. 1. Set pinion depth 2. Set back lash 3. Disassmble 4. Set pinion preload 5. Reassemble Why didnt you do this order?

[@TestDontguess]

Cause that’s not how we do things around here

[@jesstaylor3200]

@@TestDontguess I had an honest question. Way to be a dick

[@cajunroadwarrior]

I tried that tool and it's a total POS. I get a different measurement overtime I measure off of it. I ordered one for my 82 Vette Dana 44 and it doesn't look like it even fits.

[@radtek2]

Did you use setup bearings to easily remove and put on? That is what I plan to do when I use this tool. Would that cause any differences after I press on the new bearings?

[@mariodesmo]

Nice pattern! Good tool to have. Do they have a tool for other rear ends, or only the 8.8?

[@TestDontguess]

They have the tool for pretty much every common axle

[@danhambrick6331]

Nice Jerry...That tool got you pretty damn close..I was just going to go off the shim that was already in mine.😁😁

[@scottadkins918]

So what did you do shim wise for the other side? I didnt see you put any shims on the other side?

[@billyhouse1943]

Thank you..

[@Laserred01]

I bought one of these. Absolutly the most useless tool I've ever bought. Didn't even get me in the ballpark. It was just easier to start with the stock shim and go from there.

[@TestDontguess]

There is a trick to them to understand how it works which I think defeats the purpose once you figure it out

[@nitrohogg1]

@@TestDontguess so whats the trick? subtracting? using a calculator?

[@shaun4bigblocks993]

You are suppose to dip the pinion bearings in oil before assembly- probably your .05 off. It is amazing how narrow your axle tubes are, are you putting that rearend in a little Suzuki Jimny / or Suzuki X3? Golf cart? I am a fan of 14bffs and big-boy 1 ton off roaders, cutesy trail rigs get boring Quick! Build it HD once and be done!!

[@DWBmotorsports]

So one thing I noticed that steered me away from this tool was that it says it’s designed for pinions with checking distance marked on pinion head. I’ve gotten so many gearsets that didn’t have the checking distance marked so I always resorted to the old school guess and check method. Good to see that it will indeed work without marked pinion

[@TestDontguess]

it still is tricky but it can be done, you may have to measure it a couple times to be sure and its usually bang on or very close

[@bobmartens1089]

Are you launching the shuttle😩😩😩 geeze

[@chrisstromberg6527]

He’s trying to avoid damaging the differential and also avoiding excessive noise from gears. Do it right the first time!