Replaced rear axle pinion bearing and seal, need to know pinion nut torque spec. for aam rear axle 2005 dodge 3500 4x4 Thanks.

I don't know but if there is one it shouldn't be too difficult to find.

Some axles have a torque figure and the bearing preload is adjusted by graduated spacers or shims but some axles use a single use collapsible spacer and the pinion nut must be tightened until the correct bearing preload is reached.
Carrying out work on that type of axle that doesn't require the axle to be dismantled such as replacing the pinion oil seal means the nut should be marked prior to removal and returned to that position - plus a gnat's wotsit, so the pinion bearing preload limit isn't exceeded.

I suggest you discover the type of axle you have before you begin work.

The same book that I hope you used in setting the ring and pinion backlash will give you the ( Rolling Torque). Once the pinion nut is set, a new crush sleeve will be required to correct. This axel will not go around the block if back lash is not correct.

The only way you can get an accurate preload reading is with an in/lb torque wrench on the pinion nut with the carrier removed.

Not knowing which differential is in the truck, I'm guessing a 9.25" rear loader type.

The correct way to do it is remove the axles and ring gear carrier. Set your preload with a NEW crush sleeve and in/lb torque wrench. Re-install the ring gear carrier and check contact pattern and backlash.

That said, you probably will be alright if you re-torque the pinion nut to spec plus a hair. Look it up in a manual. EXAMPLE: if it's 210 MINIMUM ft/lb add 5-10 lbs. Preload is 10-20 in/lbs. I have seen shops do this to save the customer money (or charge them for complete disassembly and not do the work). It should take up the slack from the crush sleeve.

This is NOT the correct way, but if you are in a bind it might work. I can't guarantee the bearing won't fail in the future.

The pinion nut does not have a torque spec. as in how tight the nut is. The amount of torque is measured in bearing preload. You will need a "torque to rotate" torque wrench. If you are using new bearings the torque spec. is 15-25 in. lbs. If you are using your old bearings the torque spec. is 10-20 in. lbs to rotate. To measure this you will need to tighten the nut in small increments then use the torque to rotate wrench to turn the pinion without the carrier/ ring gear installed. Repeat until desired torque is reached.

PINION FLANGE & OIL SEAL

CAUTION: Following procedure must be used to retain proper pinion bearing preload. Failure to follow procedure may result in premature axle assembly or component failure. Ensure pinion bearing preload is checked before disassembly, as previous pinion bearing preload will be used during reassembly.

Removal

1. Raise and support vehicle. Scribe reference mark on drive shaft-to-pinion flange on differential for reassembly reference. Remove bolts and "U" joint straps at pinion flange on differential.
Disconnect drive shaft from differential.
2. Remove rear wheels and brake drums to prevent any drag that may affect pinion bearing preload reading. Using INCH-lb. torque wrench, measure amount of force required to rotate pinion. This is pinion bearing preload. Record pinion bearing preload for reassembly reference.
3. Using Holder (6719), hold pinion flange. Remove pinion nut and washer. Scribe reference mark on pinion flange-to-pinion for reassembly reference. Using appropriate puller, remove pinion flange from pinion. Remove oil seal from axle housing.

Installation

1. Ensure oil seal surface in axle housing is clean. Coat lip of oil seal with gear lube. Install oil seal using appropriate seal installer. Drive oil seal into axle housing until oil seal installer contacts axle housing.
2. Install pinion flange on pinion with reference mark aligned. Using appropriate pinion flange installer, install pinion flange on pinion.

CAUTION: Washer must be installed on pinion with convex side of washer facing outward (away from pinion).

3. Install washer on pinion with convex side of washer facing outward (away from pinion). Install NEW pinion nut. Tighten pinion nut to 210 ft. lbs. (285 N.m). Rotate pinion several times to seat pinion bearings.

CAUTION: DO NOT overtighten or loosen then retighten pinion nut when adjusting pinion bearing preload. If pinion nut is overtightened, collapsible spacer on pinion must be replaced.

4. Rotate pinion using INCH-lb. torque wrench. Rotating torque should be equal to reading recorded in removal step 2) , plus 5 INCH lbs. (.056 N.m). If rotating torque is low, tighten pinion nut in small increments until proper rotating torque is obtained.
5. To install remaining components, reverse removal procedure using NEW "U" joint straps and bolts. Ensure all reference marks are aligned. Tighten bolts to specification. Check lubricant level and add if necessary.

this is for 2003 7.5 inch ring gear axle. SECTION 205-02A: Rear Drive Axle/Differential — Ford 7.5-Inch Ring Gear 2003 Mustang Workshop Manual IN-VEHICLE REPAIR Drive Pinion Flange and Drive Pinion Seal Special Tool(s) 2-Jaw Puller 205-D072 (D97L-4221-A) or equivalent Holding Fixture, Drive Pinion Flange 205-126 (T78P-4851-A) Installer, Drive Pinion Flange 205-002 (TOOL-4858-E) or equivalent Removal

1. Raise and support the vehicle.

1. Remove the rear wheel and tire assemblies.

1. CAUTION: Remove the rear brake calipers to prevent drag during the drive pinion bearing preload adjustment. CAUTION: Do not allow the calipers to hang from the brake hoses. Remove the rear brake caliper and support bracket from the knuckle as an assembly. Wire the caliper and support bracket assembly out of the way.
2. CAUTION: Index-mark the driveshaft flange and pinion flange (4851) to maintain initial balance during installation. CAUTION: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. Never hammer on the driveshaft or any of its components to disconnect the yoke from the flange. Pry only in the area shown, with a suitable tool, to disconnect the yoke from the flange. Disconnect and position the driveshaft out of the way.

1. Install an Nm (inch/pound) torque wrench on the nut and record the torque necessary to maintain rotation of the drive pinion gear through several revolutions.

1. CAUTION: After removing the nut, discard it. Use a new nut for installation. Use the special tool to hold the pinion flange while removing the nut.

1. Index-mark the pinion flange and drive pinion gear stem to maintain initial balance during installation.

1. Using the special tool, remove the pinion flange.

Installation

1. Inspect the pinion flange seal journal for rust, nicks, and scratches prior to installing the flange. Polish the seal journal with fine crocus cloth, if necessary.

1. Lubricate the pinion flange splines.
   • Use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL or equivalent meeting Ford specification WSP-M2C197-A.

1. NOTE: Disregard the index marks if installing a new pinion flange. Position the pinion flange.

1. Using the special tools, install the pinion flange.

1. CAUTION: Do not under any circumstance loosen the nut to reduce preload. If it is necessary to reduce preload, install a new collapsible spacer (4662) and nut. CAUTION: Remove the special tool while taking preload readings with the Nm (inch/pound) torque wrench. Tighten the nut to set the preload.
   • Rotate the drive pinion occasionally to make sure the differential pinion bearings (4630) (4621) seat correctly. Take frequent differential pinion bearing torque preload readings by rotating the drive pinion with a Nm (inch/pound) torque wrench.
   • If the preload recorded prior to disassembly is lower than the specification for used bearings, then tighten the nut to specification. If the preload recorded prior to disassembly is higher than the specification for used bearings, then tighten the nut to the original reading as recorded.
   • Refer to the torque specification for used differential pinion bearings in the Specifications portion of this section.

1. CAUTION: Align the index marks. CAUTION: Install the driveshaft with new bolts. If new bolts are not available, apply Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G351-A5 to the threads of the original bolts. CAUTION: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. To make sure that the yoke seats squarely on the flange, tighten the bolts evenly in a cross pattern as shown. Connect the driveshaft. .

1. Install the rear brake calipers.

1. Install the rear wheel and tire assemblies.

1. Lower the vehicle.

Axle Preload and Backlash Specifications 8.0 Axle Preload and Backlash Specifications Application
Specification
Metric
English
Backlash
0.08-0.25 mm
0.003-0.010 in
Backlash (Preferred)
0.13-0.18 mm
0.005-0.007 in
Pinion Bearing Preload, New Bearings
1.7-3.4 N·m
15-30 lb in
Pinion Bearing Preload, Used Bearings
1.1-2.3 N·m
10-20 lb in
Pinion and Differential Case Bearing Preload, New Bearings
3.4-6.2 N·m
30-55 lb in
Pinion and Differential Case Bearing Preload, Used Bearings
2.8-5.1 N·m
25-45 lb in

here is a diagram on how to get the front pinion seal out and it does mention how to get the axle loose. please do not forget to rate and comment about your experience with fixya today.

1. Before servicing the vehicle, please familiarize yourself with safety procedures.
   
2. Remove both half shafts.
   
3. Mark propeller shaft and pinion flange for installation reference.
   
4. Remove front propeller shaft.
   
5. Rotate pinion gear three to four times, to verify pinion rotates smoothly.
   
6. Record pinion flange rotating torque with an inch pound torque wrench for installation reference.
   
7. Hold flange with Holder 6719 and four bolts and washers.
   
8. Remove pinion nut.
   
9. Remove flange with Remover C-452.
   
10. Remove pinion seal with a pry tool.
    Removing the companion flange
    Measuring pinion rotating torque
    Pinion seal installer
    Tightening the pinion nut
    

To install:

1. Apply a light coating of gear lubricant on the lip of pinion seal.
   
2. Install seal with Installer C-3972-A and Handle C-4171.
   
3. Install pinion flange onto the pinion with Installer C-3718 and holder.
   
4. Hold pinion flange with Holder 6719A.
   
5. Install new pinion nut and tighten nut until there is zero bearing end-play.
   
   CAUTION Do not exceed the minimum tightening torque when installing the companion flange at this point. Damage to the collapsible spacer or bearings may result.
   
6. Tighten pinion nut to 271 Nm (200 ft. lbs.).
   
   CAUTION Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
   
7. Record pinion flange rotating torque, with a torque wrench. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.).
   
8. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. lbs.) increments until rotating torque is achieved.
   
   CAUTION If maximum tightening torque is reached prior to reaching the required rotating torque, the collapsible spacer may have been damaged. Replace the collapsible spacer.
   
9. Install propeller shaft with reference marks aligned.
   
10. Install half shafts.
    

Differential bearing caps 70-85 ft lb
Ring gear bolts 70-85 ft lb
Pinion bearing preload if using original bearings 8-14 lb-in, if installing new bearings 16-28 lb-in

Hi..
On your 05 Chevy 4X4 2500HD.
The Pinion Yoke Nut, 9.75" Axle. the torq spec. is 370 Nm. -- 273 Lb ft.

I hope this help on your question.

Thank you for use fixya...