To see the original article with images check it out here: Garage411: Nissan 240sx Driveshaft: measuring points,
DRIVE SHAFT VIBRATION
FYI: If vibration is present at high speed, inspect drive shaft runout first.
1. Raise rear wheels.
2. Measure drive shaft runout at indicated points by rotating final drive companion flange with hands.
RUNOUT LIMIT : 0.024" (0.6 mm)
Use DRIVE SHAFT RUNOUT MEASURING POINTS below for drive shaft runout measuring points.
3. If runout exceeds specifications, disconnect drive shaft at final drive shaft companion flange; then rotate companion flange 90, 180 or 270 degrees and reconnect drive shaft. Runout limit: 0.024" (0.6 mm)
4. Check runout again. If runout still exceeds specifications, replace drive shaft assembly.
5. Perform road test.
DRIVE SHAFT RUNOUT MEASURING POINTS
- Model 3S63A-T
- A: 6.10" (155 mm)
- B: 6.50" (165 mm)
- C: 7.28" (185 mm)
- Model 3S63A-R
- A: 6.89" (175 mm)
- B: 6.50" (165 mm)
- C: 7.28" (185 mm)
APPEARANCE CHECKING
- Inspect drive shaft tube surface for dents or cracks. If damaged, replace drive shaft assembly.
- If center bearing is noisy or damaged, replace it.
INSPECTION
FRONT AND REAR DRIVE SHAFT
1. Inspect drive shaft runout. If runout exceeds specifications, replace drive shaft assembly. Runout limit: 0.024" (0.6 mm).
2. Inspect journal axial play. If the play exceeds specifications, replace drive shaft assembly. Journal axial play: 0" (0 mm).
DISASSEMBLY AND ASSEMBLY
CENTER BEARING
Disassembly
1. Put matchmarks on flanges, and separate 2nd tube from 1st tube.
2. Put matchmarks on the flange and shaft.
3. Remove locking nut with Tool (ST38060002). See special tools located on bottom of page.
4. Remove companion flange with puller.
5. Remove center bearing with Tool (ST30031000) and press. See special tools located on bottom of page.
Assembly
1. When installing center bearing, position the "F" mark on center bearing toward front of vehicle.
2. Apply a coat of multi-purpose lithium grease containing molybdenum disulfide to the end face of the center bearing and both sides of the washer.
3. Stake the nut. Always use new one.
4. Align matchmarks when assembling tubes.
SPECIFICATIONS
DRIVE SHAFT SPECIFICATIONS (M/T 3S63A-R AND A/T 3S63A-T)
- Number Of Joints: 3
- Coupling Method With Transmission: Sleeve Type
- Type Of Journal Bearings: Shell Type (Non-disassembly Type)
- Distance Between Yokes: 2.480" (63.0 mm)
- Drive Shaft Runout Limit: 0.024" (0.6 mm)
- Journal Axial Play: 0" (0 mm)
TORQUE SPECIFICATIONS Ft. Lbs. (N.m) (1990-91)
- Companion Flange-To-Front Drive Shaft Nut: 181-217 (245-294)
- Center Bearing Lower Mounting Bracket Bolts: 19-29 (25-39)
- Center Companion Flange Nuts: 25-33 (34-44)
- Rear Companion Flange Nuts: 29-33 (39-44)
TORQUE SPECIFICATIONS Ft. Lbs. (N.m) (1992-94)
- Companion Flange-To-Front Drive Shaft Nut (Replace fastener after disassembly. Use new fastener): 181-217 (245-294)
- Center Bearing Lower Mounting Bracket Bolts: 24-28 (32-38)
- Center Companion Flange Nuts: 25-33 (34-44)
- Rear Companion Flange Nuts: 29-33 (39-44)
To see the original article with images check it out here: Garage411: Nissan 240sx Driveshaft: measuring points,