Question about 1997 Chevrolet Blazer

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1997 S-10 blazer rear positraction additive?

Do i need to add positraction additive to it?dealer doesnt know?

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  • Aaron Tonning Jun 28, 2009

    dealer didnt know:(

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YES. You can get an additive thats called "EQUA-TORQUE" at your local parts store.

Posted on Jun 21, 2009

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1 Answer

Tractor hard to shift after warm


Add about 3 ounces of friction modifier to the fluid. It is the sam as the stuff used in positraction rear ends, all parts stores have it, get the STA-LUBE brand, it is the best in my experience.

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Rear Differential fluid poured out when checking level, and it is a light brown color, is there moisture getting in? and should i change it?


Diff fluid is normally dark brown or black after use. It also is not very expensive. Since I can't see what you are working on, I'd suggest you change it. A change is not a bad thing and doing that may save your diff if it does have water in there! You don't even need a gasket....just clean up the cover and diff surface and use silicone. If it's a positraction diff, make sure you add posi additive to the lube..

Jun 13, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

I'm hearing a load thumping sound from the rear end when I turn.


If this problem just started recently it sounds like possible rear brake problem(for safety). Most likely if this only happens while turning could be a differential (positraction) problem. Have the rear-end oil changed and or there is a oil additive that helps this(cluch plates rubbing) problem. Good luck, best regards.

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On my 2003 tahao 4.8L 4x4...the pumpkin on the rearend is leaking fluid from the seal and do not know if its synthetic oil or plaiin gear oil. but i have no owners manuel to find type or weight of oil


If you have a positraction unit (both rear wheels turn in the same direction when turned off the ground) You should use synthetic. Otherwise you can use standard 75/90 or 75/140 lube. If it's leaking you may try adding lucas sealer to slow the leak (read instructions for percentage of additive and product application)

Dec 28, 2010 | 2003 Chevrolet Tahoe

1 Answer

When i turn either left or right it sounds like my back end is going to fall apart. when i turn left my right tire stops and its bounces itself as im turning and when i turn right my left tire locks up and...


Sounds a lot like you have a positraction differential. If the unit runs dry or very low, the friction plates will bind together and begin to act like a "locked" rear, or spool used by rock crawlers and in drag cars.
I suggest you remove the rear cover, clean out any residue and re-fill with the proper amount of lube.
Posi units also require the addition of special posi additive.(add first so there is enough room for it).
After filling the unit, go into a parking lot and make a series of circles...Start with big ones and gradually make them smaller, alternating clock-wise and CCW turns. Generally if the friction plates aren't totally fried, they will begin to disengage like they were designed to do. If not, the unit needs to be rebuilt.

Oct 25, 2010 | 1993 Jeep Grand Cherokee

2 Answers

Rear end noise on 2002 Dodge ram 1500


If you have a positraction differential, you need posi additive along with the new lube. After it's in, take it to a parking lot and make tight left turns then tight right turns to get the lube between the posi plates. That usually frees it up unless there is an actual mechanical problem in the diff.
good luck!

Apr 03, 2010 | 2006 Dodge Ram 2500

1 Answer

Gearbox


you cant ,its done from underneath with the correct computer software ,if it works leave well ,no leaks?' then it doesnt need topping up .Dont play with it ,the oil will last forever and never needs changing because it doesnt get dirty ,its only hydraulic oil which doesnt have any viscosity additives like poly meythyl methacralate.Yes dealer might say it needs changing but thats only to boost their income.

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2 Answers

Rear wheel bearing


SECTION 205-02B: Rear Drive Axle/Differential — Ford 8.8-Inch Ring Gear 2003 Mustang Workshop Manual IN-VEHICLE REPAIR Axle Shaft Removal
  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Remove the wheel and tire assembly. For additional information, refer to Section 204-04 .
  1. Remove the rear brake disc (2C026). For additional information, refer to Section 206-04 .
  1. Remove the differential housing cover (4033) and drain the lubricant. For additional information, refer to Differential Housing Cover in this section.
  1. Remove the differential pinion shaft (4211).
    1. Remove the differential pinion shaft lock bolt (4241).
    1. Remove the differential pinion shaft.
  1. s3b~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the rubber O-ring in the axle shaft groove.
    Remove the U-washer (4N237).
    1. Push the axle shafts (4234) inboard.
    1. Remove the U-washer.
  1. s3b~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Damage to the rear brake anti-lock sensor (2C190) may occur if it is not removed before the axle shaft.
    Carefully remove the rear brake anti-lock sensor. For additional information, refer to Section 206-09A .
  1. s3b~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the wheel bearing oil seal.
    Remove the axle shaft.
--------------------------------------------------------------------------------------
Rear Wheel Bearing and Axle Shaft Oil Seal Removal
  1. Remove the axle shaft (4234). For additional information, refer to Axle Shaft in this section.
  1. NOTE: If the wheel bearing oil seal is leaking, the axle housing vent may be plugged.
    Using the special tools, remove the rear wheel bearing and wheel bearing oil seal.
Installation
  1. Lubricate the new rear wheel bearing with the specified lubricant.
  1. Using the special tools, install the new rear wheel bearing.
  1. Lubricate the lip of the new wheel bearing oil seal.
    • Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
  1. Using the special tools, install the new wheel bearing oil seal.
  1. Install the axle shaft. For additional information, refer to Axle Shaft in this section.

-------------------------------------------------------------------
Installation
  1. Lubricate the lip of the wheel bearing oil seal
    • Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
  1. s3b~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the wheel bearing oil seal.
    Install the two axle shafts.
  1. s3b~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the rubber O-ring in the axle shaft groove.
    Install the U-washer.
    1. Position the two U-washers on the button end of the axle shaft.
    1. Pull the axle shaft outward.
  1. NOTE: If a new pinion shaft lock bolt is unavailable, coat the threads with Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 prior to installation.
    Install the differential pinion shaft.
    1. Align the hole in the differential pinion shaft with the case lock bolt hole.
    1. Install a new differential pinion shaft lock bolt.
  1. Install the differential housing cover and fill the rear axle with the specified lubrication. For additional information, refer to Differential Housing Cover in this section.
  1. Install the rear brake anti-lock sensor. For additional information, refer to Section 206-09A .
  1. Install the rear brakes. For additional information, refer to Section 206-04 .
  1. Install the tire and wheel assembly. For additional information, refer to Section 204-04 .
  1. Lower the vehicle.

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1 Answer

1995 jeep grand cherokee right rear axle bind in sharp turn


If you have a positraction rear differential, the clutches may be sticking. If so, change lube and use an additive for posi rears. After changing lube, go in a parking lot and make a series of tight turns in both directions to get plates to separate and resume normal function. Before changing lube check to make sure it is full and that no suspension components in the rear are broken or loose that could cause rear to move and drag one wheel when turning.

Feb 24, 2009 | 1996 Jeep Grand Cherokee

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