D35 backlash? - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 04-28-2007
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D35 backlash?

Im about to pull my front diff to install my Aussie Locker

BUT i cant find the backlash specs on it, and no one at the dealership seems to know anything...

does anyone know the spec on it off the top of your head?

1999, 4.0


-Matt
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Old 04-28-2007
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Dana 35 Ford 8.8
Pinion Nut Torque 170-500 lbs-ft 150-450 lbs-ft
Carrier Cap Bolts 40-50 lbs-ft 60-80 lbs-ft
Ring Gear Bolts 70-90 lbs-ft 70-85 lbs-ft
Pinion Preload (New) 15-30 in-lbs 17-22 in-lbs
Pinion Preload (Used) 7-8 in-lbs 6-8 in-lbs
Backlash .006-.010-in. .008-015-in.


looks like i found it nevermind
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Old 04-28-2007
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are you changing gears as well? and is the carrier coming out? if not then i dont think you need to worry about backlash, but i am not positive.
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Old 04-28-2007
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im pretty sure the whole carrier is coming out

i just wish i had the $$ for gears right now so i dont need to pull it apart and re-do all the measurments again
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Old 04-28-2007
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you wont have to measure anything for that locker install..
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Old 04-28-2007
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The Aussie Locker goes in without disturbing the pinion or the relationship between the gears, so there's no need to set them up at this time. There are a couple of easy measurements that need to be taken for the locker itself but none for the gears. The locker instructions tell you how to do it.
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Old 04-28-2007
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sweeet
i knew it didnt mess with the pinion depth or the pinion at all..


its better to know more about what your doing and not need it..

Last edited by 99ranger4x4; 04-28-2007 at 06:40 PM.
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Old 04-28-2007
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When I installed my Aussie Locker last year, the model for the 98+ Ranger IFS D35 was fairly new to the market. I ran into a few questions about the instructions and had a problem with the fit within the carrier. The distributors of the Aussie Locker were very helpful in getting my installation issues resolved.

Here's an email that I sent them in October 2006 after completing the installation - maybe some of this info will be useful to someone else.

Quote:
Hi-

Some feedback on the installation...

The supplied instructions (labeled for a Dodge) say that a replacement cross pin was included with the locker and must be installed with the 98+ Ranger D35 front locker kit (XD-13535). Since my kit did not include a replacement cross pin, I called and was told that this is incorrect and the original pin should be reused.

The tolerances called out in the instructions could not be met in my diff. Side gear to cross pin tolerance is listed as 0.006~0.020" but mine was 0.024". Center distance was 0.180" which was also out of tolerance (0.145~0.170"). I was told over the phone that these clearances would be OK.

The 2nd locker drive gear physically would not slide in between the assembled side gear and the 1st drive gear. I had been warned that the opening in the Ranger D35 carrier might need to be enlarged but this was NOT the issue on mine. After several calls to Bill and Tim (in Colorado), I was authorized to turn 0.006" off the nose of one side gears to allow the installation of the drive gears.

Spin test: I carefully tried the method in the instructions several times on both sides and in both rotations but the locker absolutely refused to disengage with light-to-moderate torque applied. The advertising and instructions seem to imply that the locker will easily disengage. It finally did after a LOT of effort. I am convinced that the grease (called for in the instructions) between the side gears and drive gears was the culprit. As soon as axle lube got in there, the unlock was very easy.

I have since talked to a couple of other owners whose new Aussie Lockers also "failed" the spin test. In both cases, they dutifully disassembled the diff, rechecked the installation and found nothing wrong. This is no small task on a 98+ Ranger because the front axle must be removed from the truck to open the diff cover. In the end, it turned out that they had the same problem with the grease and the locker worked fine once gear lube got between the teeth.

In my opinion, the crosspin and spin test information needs to be improved. Also, the Ranger installation is different enough that it deserves its own set of instructions.

Thanks, Bob
This was their response:

Quote:
Thank you for the feedback. We will review your observations and suggestions with our technical service and Australia engineering and come up with a new approach to the XD13535 installation procedure. In the interim we have indicated an "out of stock" condition on that model so we can supply customers with a manual that makes the installation as easy as other models.

We apologize for the inconvenience you had.
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Old 04-29-2007
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aye

ok so what do i need to measure a feeler gauge? or w/e the thin pieces of metal are called... because if I'm gonna have to get it machined, i cant do it were i originally planned on doing the install...
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Old 04-29-2007
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Quote:
Originally Posted by 99ranger4x4
aye

ok so what do i need to measure a feeler gauge? or w/e the thin pieces of metal are called... because if I'm gonna have to get it machined, i cant do it were i originally planned on doing the install...
Yes, feeler gauges are needed to check the installed clearances. If you don't have the numbers, they will not honor the warranty.

You probably will not need to get yours machined. Mine was an early kit and it almost fit. As i mentioned before, I only had to turn 0.006" off of the nose to get allow the parts to assemble. They've had several months to get the parts and the instructions corrected.
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