|
|
|
|
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
What size is the Hex For the differential drain/fill plug 1985 300D
For the differential on a 1985 300DT?
|
#2
|
||||
|
||||
More than likely a 14mm.
__________________
83 SD 84 CD |
#3
|
||||
|
||||
Yep.... It is an H14.
I actually started removing my old diff. today (in the pouring down rain).
__________________
AJ 1985 300D (SOLD) |
#4
|
|||
|
|||
The plugs have been known to be a little tight on occasion. Somewhat normal actually. So make sure the hex is well cleaned out to allow your tool to bottom before application of pressure.
Remember it is standard proceedure to loosen the upper plug first if changing the oil. No sense finding you have drained the differential and cannot get the top plug out to refill with the tools you have on hand. This said yours will almost fall out. If I did not mention it you would swear the casting was going to break before it let loose. |
#5
|
||||
|
||||
I had to get a jack under my breaker bar to get it loose.
|
#6
|
|||
|
|||
I had to do the same thing. I fought with that plug for the longest time before just using a jack. Is there some explanation for why that upper plug is always so hard to remove, yet the drain plug usually comes out pretty easily?
__________________
84 300D 255K "Mr B" ("Mr Becker") 79 300D 265K "Mrs B" 85 300TD 175K "Mali" (Sold) 74 Ford F-100 74K "Bonnie" (Sold) 67 Jeepster Commando (Sold) |
#7
|
|||
|
|||
What do you suggest using for oil?
|
#8
|
||||
|
||||
I used Lucas 90 weight, I think.
__________________
83 SD 84 CD |
#9
|
|||
|
|||
Quote:
I wet my plugs down with PB Blaster as I was getting set up to do the differential cover resealing project. By the time I went at the plugs, it had penetrated and gave me an advantage. I also put a two foot piece of pipe on my 14MM wrench which gave me some added leverage. I do not think I would have broken them loose without the leverage of the pipe.
__________________
85 300D 75K Anthracite Grey 0-60 in 13 seconds **For Sale** 84 300D 333K Black (The Velveteen Rabbit) 0-60 in 14 seconds 00 Toyota Sienna 208K (Sold) 15 Subaru Outback 43K 11 Subaru Outback 67K 98 Ford Taurus 100K (Gertie - Was Grandma's - drove it to church and shopping - really) Daughter's car now. 30 Model A Ford 2 Door Sedan (Sold) 0-60 in . . . Never reached 60 |
#10
|
|||
|
|||
I used Valvoline Duro Blend 80W-90 Synthetic. It looked like the best stuff on the shelf and I don't mind spending a little more when it is something that is going to be in service for such a long time.
I also bought a pump to get the oil into the differential. It did not work though. Dang, was that every annoying. I got as much oil as I could into the diff but was not able to get the whole quart in. I will need to take it back and get another one. In theory, I suppose with a helper you could get about 3 or 4 feet of clear plastic hose with a funnel fitted to the upper end and have a helper pour the oil down the tube while you hold the other end in the filler hole. You would need to pinch the upper end and raise the hose up over the diff, under the car as it was emptying. Sounds like it would work.
__________________
85 300D 75K Anthracite Grey 0-60 in 13 seconds **For Sale** 84 300D 333K Black (The Velveteen Rabbit) 0-60 in 14 seconds 00 Toyota Sienna 208K (Sold) 15 Subaru Outback 43K 11 Subaru Outback 67K 98 Ford Taurus 100K (Gertie - Was Grandma's - drove it to church and shopping - really) Daughter's car now. 30 Model A Ford 2 Door Sedan (Sold) 0-60 in . . . Never reached 60 |
#11
|
||||
|
||||
Quote:
The second one, I also had the helper cut a breather hole in the bottom of the plastic container, much faster.
__________________
83 SD 84 CD Last edited by toomany MBZ; 12-07-2009 at 07:26 PM. Reason: spelling |
#12
|
|||
|
|||
When you replace the upper plug, put some anti-seiz on it.
Charlie
__________________
there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#13
|
|||
|
|||
Post #75 shows how I used an old gas line anti freeze bottle . . . no helper needed!
My 1st MB . . . A 82 240D Manual!
__________________
82 240D Manual 277K and still rolling! 02 Volvo S60 AWD For Sale |
#14
|
|||
|
|||
That does make sense. I had always assumed the oil was splashing around in there enough to keep oil on the upper plug, but I suppose an occasionally splash of oil isn't enough to seep down into the threads.
__________________
84 300D 255K "Mr B" ("Mr Becker") 79 300D 265K "Mrs B" 85 300TD 175K "Mali" (Sold) 74 Ford F-100 74K "Bonnie" (Sold) 67 Jeepster Commando (Sold) |
#15
|
||||
|
||||
hit it with PB Blaster or other kerosene product the night before, then drive the 14mm socket in with a BFH (big ****** hammer). A few good straight on hits are usually enough to bust it loose. Use an extension...and yeah, it seems like you're gonna break the differential casting before it breaks loose.
If that doesn't work, you'll have to apply heat around the plug.
__________________
1972 W115 220D/8 SLS, Coffman Starter "Ümläüt" (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|