Rear Diff Inspection Cover - Diesel Forum - TheDieselStop.com
1999-2007 Upgrades and Aftermarket - General Upgrading or adding OEM or aftermarket equipment to your 1999-2007 Super Duty. Please confine discussion of topics in this forum to those items that are not engine-specific.

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post #1 of 23 (permalink) Old 03-09-2008, 09:49 PM Thread Starter
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Rear Diff Inspection Cover

Has anyone added a 2008 read diff cover to an earlier truck, say a 2000 srw? I picked one up at a swqp meet but there is no gasket. Looks like its groved for an "o" ring but dealer says no. Silicone and go?? Any other ideas? Thanks.

2000 f3504x4, cc, lwb, 7.3, K+N air filter, ATS three stage chip, 4" ss turbo back exhaust, dual outlet ss muffler, 5" polished tips, Pace 17x9 wheels, mt baja atzp3 37x12.5x17, Fabtec 5.5" lift, 2002 headlights and markers, stereo and video !
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post #2 of 23 (permalink) Old 03-10-2008, 03:12 AM
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Longer harware is required and good silicone for the gasket. I did mine and have had no issues.

2015 F-350 CCLB PSD 4X4 3.55 ELD


Some stock stuff, some modded stuff, some deleted stuff.....
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post #3 of 23 (permalink) Old 03-10-2008, 10:40 AM
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Yeah the bolts need to be longer. Then silicone it on and have fun.

99.5PSD, F250, 4x4, wht. CC, SB, Line-X, 200K+ , 6spd,LUK Ceramic Clutch, Warn Premium hubs, DP Tuner F5 stock/high idle/40T/60T/80E/100hp, Casserly STG1 sticks, DIY TYMAR, No EBPV, 08 Diff Cover, 4"MBRP S/S, Banks wheel*traded for stock wheel*, ATS Housing, HXLine, Zoodad Mod, CCV Mod, AIH removed, Shimmed fuel, Isspro Boost Guage & Pyro Guage, 2" Level Kit, Firestone Air Support Springs, BFG AT k/o, CB Galaxy DX949, DUAL Antennas, Lead Foot came stock

1998-F150 4x4, LB, K&N, No Kitty, 24LB inj, CB...Wifes ride.
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94 Mustang GT, Red, Black Saleen rims, T-5, intake, exhaust, cam, 24LB squirts, tuned, last of the 302...
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post #4 of 23 (permalink) Old 03-10-2008, 11:46 AM
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Quote:
Originally Posted by w3504x4m View Post
Silicone and go??
That's the short version.

The longer version is:

First, get new bolts that are long enough. The "factory" bolts that come with the 2008 SRW diff cover have an allen head insted of hex, so if that's the bolts you get, be sure you have an allen wrench that fits them exactly. The bolts from your stock steel cover are too short for the thicker aluminum cover.

Next, remove all but one bolt at the top of the old cover. Pry the cover off at the bottom and get ready for a big mess if you don't have a big enough drip pan. Let it drain and drip for several minutes, then remove that last bolt and remove the cover.

Then be certain both mating surfaces are squeeky clean - use brake parts cleaner or some such. Then get the mating surfaces dry before you add a bead of high-temp silicon RTV gasket maker to the cover.

Stick two bolts into the top of the cover and lift it up and start those bolts without messing up the bead of RTV. Then slide the cover into place and hold it tight while you tighten those two bolts finger tight.

Then get all the other bolts started and finger tight. Then use a torque wrench and get all the bolts to about 10 lb/ft, then final tighten all bolts to 24 lb/ft. (Higher torque on the bolts is for the bolts in the steel cover. With the aluminum cover, the 2008 workshop manual specifies 24 lb/ft.)

Wait one hour or more to allow the silicon seal to set.

Fill up with 75w140 synthetic gear lube. If you have a limited slip rear end, you may need to add between 4 and 8 ounces of friction modifier before you pour in part of the 4th quart of gear lube.

Any brand of synthetic 75w140 gear lube will do. I used Wal-Mart's house brand, but it's also made by Royal Purple, AMSoil, Mobil 1, etc.





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My Sierra Blanca (Spanish for White Mountain) in the sig pic was a great pickup for 11.5 years. I sold it several years ago. I drove a hand-me-down 2003 F-150 SuperCrew 4.6L 2V for a while, but it was unacceptable for towing more than a rowboat. Replacement is a 2012 F-150 EcoBoost SuperCrew Lariat that tows my 5,000-pound TT like a dream. Replaced the 2012 with a 2019 F-150 3.5L EcoBoost with max tow.

Last edited by SmokeyWren; 06-27-2008 at 03:34 PM. Reason: typo
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post #5 of 23 (permalink) Old 03-10-2008, 11:51 AM
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Any specs on the bolts? I just ordered my cover.

2000 F250 XLT 4x4 SC 7.3 w/Auto Tranny w/ TC L/U Sw & shift kit, 3 autometer gages, Super Zoodad, PHP Hydra chip, 4" DP/Exhaust w/dual 3.5" outlets, 275/70/18 Kumho AT51s on 8.5" rims, 08 AlumDiffCvr, Bilsteins, 31 row trans cooler, WW, BPV delete, AIH delete, hutch, harpoon and billet FPR (70psi), trans cooler bypass delete by accident, rear air bags, Jimmijammers.
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post #6 of 23 (permalink) Old 03-10-2008, 01:11 PM
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When I ordered mine it came with the bolts. You should check with the seller to see if it comes with bolts already.

99.5PSD, F250, 4x4, wht. CC, SB, Line-X, 200K+ , 6spd,LUK Ceramic Clutch, Warn Premium hubs, DP Tuner F5 stock/high idle/40T/60T/80E/100hp, Casserly STG1 sticks, DIY TYMAR, No EBPV, 08 Diff Cover, 4"MBRP S/S, Banks wheel*traded for stock wheel*, ATS Housing, HXLine, Zoodad Mod, CCV Mod, AIH removed, Shimmed fuel, Isspro Boost Guage & Pyro Guage, 2" Level Kit, Firestone Air Support Springs, BFG AT k/o, CB Galaxy DX949, DUAL Antennas, Lead Foot came stock

1998-F150 4x4, LB, K&N, No Kitty, 24LB inj, CB...Wifes ride.
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94 Mustang GT, Red, Black Saleen rims, T-5, intake, exhaust, cam, 24LB squirts, tuned, last of the 302...
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post #7 of 23 (permalink) Old 03-10-2008, 01:20 PM
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nice info smokey...
cspid drilled and tapped his for a gauge...nice option if you think you will ever add one..

course as healso said ,
it was a pretty boring gauge to watch, and not much you can do about it anyway, cept pull over and stop.

early 99 f350 4x4 crew cab
work in progress
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post #8 of 23 (permalink) Old 03-10-2008, 01:25 PM
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Quote:
Originally Posted by PStroked444 View Post
When I ordered mine it came with the bolts. You should check with the seller to see if it comes with bolts already.
I did...they don't have the bolts and washers. So what diameter, thread, length and strength were yours?

2000 F250 XLT 4x4 SC 7.3 w/Auto Tranny w/ TC L/U Sw & shift kit, 3 autometer gages, Super Zoodad, PHP Hydra chip, 4" DP/Exhaust w/dual 3.5" outlets, 275/70/18 Kumho AT51s on 8.5" rims, 08 AlumDiffCvr, Bilsteins, 31 row trans cooler, WW, BPV delete, AIH delete, hutch, harpoon and billet FPR (70psi), trans cooler bypass delete by accident, rear air bags, Jimmijammers.
Jayco 26BHS elite, no RV parks...just the woods if possible.
See my album for a recent pic.
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post #9 of 23 (permalink) Old 03-10-2008, 03:36 PM
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Smokey, that was an outstanding write up!

I use the Navistar oil pan silicone for almost everything- my neighbor works at a truck repair shop and it comes in their overhaul kits so he always has extra tubes of it.

That stuff is really durable and has adhesion qualities far above anything you buy off the rack at the local autoparts stores. The funny thing is, I bought a tube of Ford's version of it and it was NOWHERE NEAR the quality or density of Navistar's.

As Smokey said, "squeeky clean." I've found that tapped holes tend to hold a lot of oil in them that compromises sealant integrity, so make sure you use carb or brake cleaner with the little red probe clear down into the base of the holes. I usually clean them out with Q-tips afterwards until the Q-tips come out spotless. Sometimes it takes 3 or 4 tries to get all of that oil out of holes. Blow the holes out with compressed air afterwards. If you don't have a compressor, go to office depot and buy a throw away can of compressed air from them.

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post #10 of 23 (permalink) Old 03-10-2008, 09:11 PM Thread Starter
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Thanks all!! As soon as the weather breaks Im on it.

2000 f3504x4, cc, lwb, 7.3, K+N air filter, ATS three stage chip, 4" ss turbo back exhaust, dual outlet ss muffler, 5" polished tips, Pace 17x9 wheels, mt baja atzp3 37x12.5x17, Fabtec 5.5" lift, 2002 headlights and markers, stereo and video !
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post #11 of 23 (permalink) Old 03-10-2008, 09:56 PM
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Quote:
Originally Posted by 69mach1377 View Post
I did...they don't have the bolts and washers. So what diameter, thread, length and strength were yours?

1.25 x 5/16-18 cap head (allen head) bolts and 5/16 washers
I used stainless bolts and washers. Before the install, I cleaned the cover with brake cleaner and then sprayed 3 coats of Krylon clear on the cover. After the first Michigan winter, the cover still looks like new.
Bob


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post #12 of 23 (permalink) Old 03-10-2008, 10:38 PM
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Perfect...thanks.
I'm thinking of painting it black, but leaving in between the fins , or the fin tops, clear.

2000 F250 XLT 4x4 SC 7.3 w/Auto Tranny w/ TC L/U Sw & shift kit, 3 autometer gages, Super Zoodad, PHP Hydra chip, 4" DP/Exhaust w/dual 3.5" outlets, 275/70/18 Kumho AT51s on 8.5" rims, 08 AlumDiffCvr, Bilsteins, 31 row trans cooler, WW, BPV delete, AIH delete, hutch, harpoon and billet FPR (70psi), trans cooler bypass delete by accident, rear air bags, Jimmijammers.
Jayco 26BHS elite, no RV parks...just the woods if possible.
See my album for a recent pic.
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post #13 of 23 (permalink) Old 03-11-2008, 11:37 AM
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2008 Diff Cover

Hey guys
Does anyone have a ford part# for the diff cover.
The cover should fit an 06 f350 dually dana 80 correct.

thanks

06 f350 cc lb dually 6.0 4x4 6speed lariet. Straight piped,S&B cold air intake,timbrens.B&W hitch,rihno lined.
02 softail deuce
07 articat 700 le 4/4
06 silverback fth wheel 36 foot
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post #14 of 23 (permalink) Old 03-11-2008, 02:21 PM
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Quote:
Originally Posted by DieselDoctor22 View Post
Hey guys
Does anyone have a ford part# for the diff cover.
The cover should fit an 06 f350 dually dana 80 correct.

thanks
Powerstrokeshop.com

Give them a call


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post #15 of 23 (permalink) Old 03-12-2008, 09:51 AM
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Quote:
Originally Posted by DieselDoctor22 View Post
The cover should fit an 06 f350 dually dana 80 correct.
No.

The aluminum diff cover for a 2008 SRW will fit all SRW diesel diffs for the last 20 years. But it won't fit the Dana 80 diff in your Dooley.

Another source for the SRW diff cover is long-time sponsor of TheDieselStop David Murphy at DieselManor. His costs more, but includes the bolts and washers you need to install it. DieselManor - Ford Sterling Differential cover

You have to have the bolts and washers, so if you order from someone else, be sure theirs includes the bolts and washers. the Ford part number is included in the DieselManor link.



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