Whenever you remove the driveshaft, yoy should mark the position with a grease marker and put it back in the exact position or the pinion angle is way off when you reinstalled the OEM setup.
well , i didnt > I didnt want to take it off . i was putting back my OEM suspension and the axle slipped by mistake . its whineing very badly, even at 10 mph i
jack up the rear (block the front so it doesn't roll) put the truck in neutral and have someone spin the tires while you look and see if it is not binding. Your shaft like smokey said should have a carrier bearing make sure it is not cocked in there.
Hey man, sorry for the luck! What I would do is drop the shaft from the diffy again and with tranny in neutral, rotate the drive shaft 180* and reinstall to rear end. YOu DO NOT have to remove from tranny to to this, only from rear. The shaft is balanced and the weights are probably on the wrong side. I have done this before by forgetting to mark as noted above. Use a grease pencil to mark this one before you take it apart so you know it's not balanced at this position. If for some reason it is vibrating after a 180*, check and verify pinion angle/rear end is not pointing up or down but rather towards the carrier bearing or output shaft of tranny if no carrier is used.
I would say if you put your stock suspension on then check all of it to make sure the axle is on the leaf springs straight. It sounds like the pinion angle is wrong or the rear axle isnt on the leafs straight.
Where the rear u-joint joins the pinion yoke, check to make sure the ujoint is seated well in the yoke and not sitting up on one of the ears that hold the u-joint caps in.
Out-of-round tires or wheels that are out of balance,
will cause a low frequency vibration.
Driveline vibration can also caused by loose or
damaged engine mounts.
Propeller shaft vibration increases with vehicle
speed. A vibration that occurs at a specific speed
range, is not usually caused by an out of balance propeller
shaft. Defective universal joints or an incorrect
propeller shaft angle are usually the cause of such a
vibration.
DR
DIFFERENTIAL & DRIVELINE 3 - 1
DRIVELINE VIBRATION
Drive Condition Possible Cause Correction
Propeller Shaft Noise 1) Undercoating or other foreign
material on shaft.
1) Clean exterior of shaft and wash
with solvent.
2) Loose U-joint clamp screws. 2) Install new clamps and screws
and tighten to proper torque.
3) Loose or bent U-joint yoke or
excessive runout.
3) Install new yoke.
4) Incorrect driveline angularity. 4) Measure and correct driveline
angles.
5) Rear spring center bolt not in
seat.
5) Loosen spring u-bolts and seat
center bolt.
6) Worn U-joint bearings. 6) Install new U-joint.
7) Propeller shaft damaged or out
of balance.
7) Installl new propeller shaft.
8) Broken rear spring. 8) Install new rear spring.
9) Excessive runout or unbalanced
condition.
9) Re-index propeller shaft, test,
and evaluate.
10) Excessive drive pinion gear
shaft runout.
10) Re-index propeller shaft and
evaluate.
11) Excessive axle yoke deflection. 11) Inspect and replace yoke if
necessary.
12) Excessive transfer case runout. 12) Inspect and repair as necessary.
Universal Joint Noise 1) Loose U-joint clamp screws. 1) Install new clamps and screws
and tighten to proper torque.
2) Lack of lubrication. 2) Replace as U-joints as
necessary.
PROPELLER SHAFT BALANCE
If propeller shaft is suspected of being out of balance,
use the following procedure.
NOTE: Indexing propeller shaft 180° relative to the
yoke may eliminate some vibrations.
(1) Raise and support vehicle.
(2) Clean all foreign material from the propeller
shaft and universal joints.
(3) Inspect propeller shaft for missing balance
weights, broken welds and bent areas.
If propeller
shaft is bent, it must be replaced.
(4) Inspect universal joints for wear and properly
installed.
(5) Check propeller shaft bolt torques.
(6) Remove wheels and install lug nuts to retain
brake rotors.
(7) Mark and number the shaft six inches from the
pinion yoke end at four positions 90° apart.
(8) Run and accelerate vehicle until vibration
occurs. Note the intensity and speed the vibration
occurred. Stop the engine.
(9) Install a screw clamp at position 1 (Fig. 1).
Fig. 1 CLAMP SCREW AT POSITION 1
1 - CLAMP
2 - SCREWDRIVER
3 - 2 PROPELLER SHAFT
DR
PROPELLER SHAFT (Continued)
(10) Start engine and check vibration. If there is
little or no change move the clamp to the next positions.
Repeat the vibration test.
NOTE: If there is no difference in vibration at this
positions, the vibration may not be the propeller shaft.
(11) If vibration decreased, install a second clamp
(Fig. 2) and repeat the test.
(12) If additional clamp causes an additional vibration,
separate the clamps 1/2 inch above and below
the mark. Repeat the vibration test (Fig. 3).
(13) Increase distance between the clamp screws
and repeat test, until the least amount of vibration is
noticed. Bend the slack end of the clamps so screws
will not loosen.
(14) If vibration remains unacceptable, repeat the
procedure to the front end of the propeller shaft.
(15) Install wheels and lower vehicle.
PROPELLER SHAFT RUNOUT
(1) Clean propeller shaft surface, where dial indicator
will contact the shaft.
(2) Install dial indicator perpendicular to the shaft
surface.
(3) Measure runout at the center and ends of the
shaft away from weld areas, so weld process does not
affect measurements.
(4) Refer to Runout Specifications chart.
(5) If runout is out of specification, index the shaft
180° and take shaft runout measurements again.
(6) If runout is now within specifications, mark
shaft and yokes for proper orientation.
(7) If runout is not within specifications, verify
runout of the transmission/transfer case and axle are
within specifications. Correct as necessary and measure
propeller shaft runout again.
(8) Replace propeller shaft if the runout still
exceeds the limits.
RUNOUT SPECIFICATIONS
Front of Shaft 0.030 in. (0.76 mm)
Center of Shaft 0.015 in. (0.38 mm)
Rear of Shaft 0.030 in. (0.76 mm)
NOTE:
Measure front/rear runout approximately 3 inches (76 mm) from the weld seam at each end of the shaft tube for tube lengths over 30 inches. For tube lengths under 30 inches, the maximum allowed runout is 0.020 in. (0.50 mm) for the full length of the tube.
STANDARD PROCEDURE
PROPELLER SHAFT ANGLE
This procedure applies to front and rear propeller
shafts.
NOTE: To obtain output angle (A) on the front propeller
shaft equipped with a C/V joint, place inclinometer on machined surface of the C/V joint.
(1) Place vehicle in Neutral.
(2) Raise vehicle and support the axles as level as
possible.
(3) Remove universal joint snap rings if equipped,
so Inclinometer 7663 base sits flat.
(4) Rotate shaft until transmission/transfer case
output yoke bearing is facing downward.
NOTE: Always take measurements from front to
rear and on the same side of the vehicle. Fig. 2 TWO CLAMP SCREWS Fig. 3 CLAMP SCREWS SEPARATED
1 -
1⁄2 INCH
DR
PROPELLER SHAFT 3 - 3
PROPELLER SHAFT (Continued)
(5) Place inclinometer on yoke bearing cap or pinion
flange ring (A) parallel to the shaft (Fig. 4). Center
bubble in sight glass and record measurement.
This measurement will give you the transmission
yoke Output Angle (A).
(6) Rotate propeller shaft 90 degrees and place
Inclinometer on yoke bearing parallel to the shaft
(Fig. 5). Center bubble in sight glass and record measurement.
This measurement can also be taken at
the rear end of the shaft.
This measurement will give you the Propeller
Shaft Angle (C).
(7) Rotate propeller shaft 90 degrees and place
inclinometer on companion flange yoke bearing parallel
to the shaft (Fig. 6). Center bubble in sight glass
and record measurement.
This measurement will give you the pinion
Companion Flange Input Angle (B).
(8) Subtract smaller figure from larger (C minus
A) to obtain Transmission/Transfer Case
Output
Operating Angle
.
(9) Subtract smaller figure from larger (C minus
B) to obtain axle
Input Operating Angle.
Refer to rules and example in (Fig. 7) for additional
Out-of-round tires or wheels that are out of balance,
will cause a low frequency vibration.
Driveline vibration can also caused by loose or
damaged engine mounts.
Propeller shaft vibration increases with vehicle
speed. A vibration that occurs at a specific speed
range, is not usually caused by an out of balance propeller
shaft. Defective universal joints or an incorrect
propeller shaft angle are usually the cause of such a
vibration.
DR
DIFFERENTIAL & DRIVELINE 3 - 1
DRIVELINE VIBRATION
Drive Condition Possible Cause Correction
Propeller Shaft Noise 1) Undercoating or other foreign
material on shaft.
1) Clean exterior of shaft and wash
with solvent.
2) Loose U-joint clamp screws. 2) Install new clamps and screws
and tighten to proper torque.
3) Loose or bent U-joint yoke or
excessive runout.
3) Install new yoke.
4) Incorrect driveline angularity. 4) Measure and correct driveline
angles.
5) Rear spring center bolt not in
seat.
5) Loosen spring u-bolts and seat
center bolt.
6) Worn U-joint bearings. 6) Install new U-joint.
7) Propeller shaft damaged or out
of balance.
7) Installl new propeller shaft.
8) Broken rear spring. 8) Install new rear spring.
9) Excessive runout or unbalanced
condition.
9) Re-index propeller shaft, test,
and evaluate.
10) Excessive drive pinion gear
shaft runout.
10) Re-index propeller shaft and
evaluate.
11) Excessive axle yoke deflection. 11) Inspect and replace yoke if
necessary.
12) Excessive transfer case runout. 12) Inspect and repair as necessary.
Universal Joint Noise 1) Loose U-joint clamp screws. 1) Install new clamps and screws
and tighten to proper torque.
2) Lack of lubrication. 2) Replace as U-joints as
necessary.
PROPELLER SHAFT BALANCE
If propeller shaft is suspected of being out of balance,
use the following procedure.
NOTE: Indexing propeller shaft 180° relative to the
yoke may eliminate some vibrations.
(1) Raise and support vehicle.
(2) Clean all foreign material from the propeller
shaft and universal joints.
(3) Inspect propeller shaft for missing balance
weights, broken welds and bent areas.
If propeller
shaft is bent, it must be replaced.
(4) Inspect universal joints for wear and properly
installed.
(5) Check propeller shaft bolt torques.
(6) Remove wheels and install lug nuts to retain
brake rotors.
(7) Mark and number the shaft six inches from the
pinion yoke end at four positions 90° apart.
(8) Run and accelerate vehicle until vibration
occurs. Note the intensity and speed the vibration
occurred. Stop the engine.
(9) Install a screw clamp at position 1 (Fig. 1).
Fig. 1 CLAMP SCREW AT POSITION 1
1 - CLAMP
2 - SCREWDRIVER
3 - 2 PROPELLER SHAFT
DR
PROPELLER SHAFT (Continued)
(10) Start engine and check vibration. If there is
little or no change move the clamp to the next positions.
Repeat the vibration test.
NOTE: If there is no difference in vibration at this
positions, the vibration may not be the propeller shaft.
(11) If vibration decreased, install a second clamp
(Fig. 2) and repeat the test.
(12) If additional clamp causes an additional vibration,
separate the clamps 1/2 inch above and below
the mark. Repeat the vibration test (Fig. 3).
(13) Increase distance between the clamp screws
and repeat test, until the least amount of vibration is
noticed. Bend the slack end of the clamps so screws
will not loosen.
(14) If vibration remains unacceptable, repeat the
procedure to the front end of the propeller shaft.
(15) Install wheels and lower vehicle.
PROPELLER SHAFT RUNOUT
(1) Clean propeller shaft surface, where dial indicator
will contact the shaft.
(2) Install dial indicator perpendicular to the shaft
surface.
(3) Measure runout at the center and ends of the
shaft away from weld areas, so weld process does not
affect measurements.
(4) Refer to Runout Specifications chart.
(5) If runout is out of specification, index the shaft
180° and take shaft runout measurements again.
(6) If runout is now within specifications, mark
shaft and yokes for proper orientation.
(7) If runout is not within specifications, verify
runout of the transmission/transfer case and axle are
within specifications. Correct as necessary and measure
propeller shaft runout again.
(8) Replace propeller shaft if the runout still
exceeds the limits.
RUNOUT SPECIFICATIONS
Front of Shaft 0.030 in. (0.76 mm)
Center of Shaft 0.015 in. (0.38 mm)
Rear of Shaft 0.030 in. (0.76 mm)
NOTE:
Measure front/rear runout approximately 3 inches (76 mm) from the weld seam at each end of the shaft tube for tube lengths over 30 inches. For tube lengths under 30 inches, the maximum allowed runout is 0.020 in. (0.50 mm) for the full length of the tube.
STANDARD PROCEDURE
PROPELLER SHAFT ANGLE
This procedure applies to front and rear propeller
shafts.
NOTE: To obtain output angle (A) on the front propeller
shaft equipped with a C/V joint, place inclinometer on machined surface of the C/V joint.
(1) Place vehicle in Neutral.
(2) Raise vehicle and support the axles as level as
possible.
(3) Remove universal joint snap rings if equipped,
so Inclinometer 7663 base sits flat.
(4) Rotate shaft until transmission/transfer case
output yoke bearing is facing downward.
NOTE: Always take measurements from front to
rear and on the same side of the vehicle. Fig. 2 TWO CLAMP SCREWS Fig. 3 CLAMP SCREWS SEPARATED
1 -
1⁄2 INCH
DR
PROPELLER SHAFT 3 - 3
PROPELLER SHAFT (Continued)
(5) Place inclinometer on yoke bearing cap or pinion
flange ring (A) parallel to the shaft (Fig. 4). Center
bubble in sight glass and record measurement.
This measurement will give you the transmission
yoke Output Angle (A).
(6) Rotate propeller shaft 90 degrees and place
Inclinometer on yoke bearing parallel to the shaft
(Fig. 5). Center bubble in sight glass and record measurement.
This measurement can also be taken at
the rear end of the shaft.
This measurement will give you the Propeller
Shaft Angle (C).
(7) Rotate propeller shaft 90 degrees and place
inclinometer on companion flange yoke bearing parallel
to the shaft (Fig. 6). Center bubble in sight glass
and record measurement.
This measurement will give you the pinion
Companion Flange Input Angle (B).
(8) Subtract smaller figure from larger (C minus
A) to obtain Transmission/Transfer Case
Output
Operating Angle
.
(9) Subtract smaller figure from larger (C minus
B) to obtain axle
Input Operating Angle.
Refer to rules and example in (Fig. 7) for additional
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