903 313 Differential Major assembly Bearings and Spacers.

[Altered Sprinter]

It had to happen after six and a half years, the rear differential seal gave way with weapage being too evident.

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The van has had a tough life off road due mainly to the obsolete Bridgestone tires, that offer zero traction off road on high inclines and switchbacks.

I ran a schematic up on Wis data For major assembly MD: 741408 7 0388 28 Group:35-Rear Axle, to source part numbers, bearing in mind I have not as of yet pulled the seal down to inspect what needs to be replaced?.

Nothing is simple with Sprinters, replacing a seal may not be the correct remedy as to ware and tear on the parts on the in-line shaft backing up to the crown and pinion.
The problem is without a tear down I will not know what is in need of replacement.

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As Parts are now an issue.
I'm not 100% confident if I have the exact numbers right neither was MB for that matter after back checking with Parts department.

1. 601 351 00 72 Nut 300D
2. 023 997 58 47 Seal Diff Pinion
3. 007 981 53 05 Tapered Roller
4. 108 353 00 42 Spacer Bushing
5. 639 353 0053 Spacer Tube
6. 602 353 01 48 Ring
7. 601 353 84 52 Spacer Washer 5.24MM
8. 8001 980 69 02 Tapered Roller Bearing.

• Now the problem starts two bearings tow spacer washers depending on slack as to wear and tear?

Obviously I'll have to pull the parts out measure everything from beginning to end to get this right If I can, it's been a long time since I have worked on differentials from MY Ford GM and Dodge days.

Hypoid Oil MB sheet 236 A 001 989 27 03 12

This is the tricky one, the only oil I can find quick smart is MB sheet 235.8 last two digits 10 it's a lighter grade=sedans and I'm not sure if it can be used as a top up oil that is comparable with the OEM oil currently in the differential housing it is low.

Originally I was happy for my dealership to do this repair, until no return phone calls three of as to [A] a ball park figure for tear down and inspection to advise on what parts were required to commit to the repairs.

I'll do it my self after I re purchase a couple of 4000 lb jacking stands my 2000KG stands look very marginality inadequate , Me under 2.5 T Not unless I feel safe.
Tools one seal remover and bearing puller that's next on my List for Monday.
I'm curious as to part NO 601 351 00 72 Nut 300G if it had originally been penned over the locking key tab on the spline! or left not penned ..?
I'm too old for this crap.
Out comes the transvestite:

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Richard

[SPRINTERUK]

dont panic tricky

real easy fix

check your e-mail

cheers

chris

[Altered Sprinter]

Hello God of MB fraternity the savior of our forum
Yes I saw I acted. that means Oi' Oi' Oi'
Cheers Richard.

[Chandlerazman]

I figured you can leave the bearings alone and just replace the seal. The only issue I can think of is if the old seal left a groove on the shaft. I'd be curious to see what you come up with

[PeterInSa]

Richard,
What are you up to, posting pictures of a vehicle with a Blue oval enblem on the grill?

Peter

[Altered Sprinter]

Originally Posted by PeterInSa

Richard,
What are you up to, posting pictures of a vehicle with a Blue oval enblem on the grill?

Peter

Thats my back up van

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Richard

[Altered Sprinter]

Originally Posted by Chandlerazman

I figured you can leave the bearings alone and just replace the seal. The only issue I can think of is if the old seal left a groove on the shaft. I'd be curious to see what you come up with

Hi Siomon :Yes it's came up on your side of a few threads of late.
Currently I have weapage on the pinon seal, and there is oil in the diff down 1/2' inch at best.
It's the weekend I have the original MB Hypoid oil but it may be degraded it's 4 years old ..so I wont risk putting it in as a top-up to an unknown viscosity level.?
Replacement oil that match are Castrol Long life MGO 75800025 no stock in Hobart. until either I jack the back up and or put it on a hoist I do not know what is damaged inside of the spline, at best I will only require to replace nut and rear Ring pinon seal, slack adjustment if present? on testing will reveal that two spacers can be used 5.24 or 5.26 or ultimately all parts may or will be required to be re-placed, I need to remove and measure the shaft and visually inspect the spline.

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my option is to inspect and simply the replace the nut and pinon seal, but I'm prepared to replace the entire kit.... I won't know until I put it up on the lift.

I'll do this at Mercedes! let them sort it out. If and then, more work is required I'll buy the tools and parts and do it myself.

First path is to drain oil and filter out any particles such as metal being viable that's the key to any metal parts being damaged.

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A replacement Crown and pinion is RETAIL AU$1600 dollars from MB Australia plus labor plus parts
I can do better dollar wise. and this is a worst case scenario.
Richard

[Amboman]

Why do you have to replace the crown & pinion when its a blown $4 seal

[jdcaples]

Originally Posted by SPRINTERUK

dont panic tricky

real easy fix

check your e-mail

cheers

chris

I can't believe you called him "Tricky," as in "Tricky Dick."

We need to keep Richard around... and I don't mean to kick around, either.

-Jon

PS: Seriously, how many kilometers are on the odometer?

[Altered Sprinter]

Originally Posted by jdcaples

I can't believe you called him "Tricky," as in "Tricky Dick."

We need to keep Richard around... and I don't mean to kick around, either.

-Jon

PS: Seriously, how many kilometers are on the odometer?

Always been called Tricky Dicky in life...

Not a lot by U.S standards but 200 thousand K's almost.

I have a busy week just researching arranging the first set of parts as a temporary fix, if the oil shows metal.

After going through Fluid spec check listings... MB Transmission fluid Manual 75-80W full syn can be used MB A 001 989 26 03 10 as a top up ..I have some. I'll use it till the parts arrive. 1.8 Liters of MB sheet 335.6 /335.8 MB A 001 989 27 03 12 ..I have not looked at the specs in it's entirety as of as of yet.


OE manufacture Hypoid oil Commercial oil ...Liqui Moly Differential... HYP 85W-90
Stock available Hobart.

After running a break down on archive sheets looking at a Borg Warner differential as a comparison. Bingo I hit the jack pot and found out the two differentials are as similar..Not bad considering My archive collections of useless information is now 52 years old for the Golden oldie, an absolute giggle.

Part one as a reference only"
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At least the universal joint's are replaceable.

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Parts in line almost identical to MB of which allows for two speed seals if yolk bore is out of true Part Number MB 56 allows for a speed seal.

And MB Part 68 of which slides back into MB Part 71 can incorporate a speed seal if required.

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Looks OK to Go!... Once parts arrive, for a visual tear down.

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Catch 22 How much whip lash beyond OEM tolerances is there on the main pinon if any..Time will revival. I dam well hope there are Markings provided,to use as a guide?

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All this panic over a dam Penguin and a Seal.
But nothings Black or White.
As I have a need to check the NCV flange to see if it can be retrofitted back onto the Tin and use the lock down bolt tabs..
this will be interesting may need Chris to help me out, if my dealer does not have the part in stock.

Richard