Disassembly And Assembly Of Subassemblies: Mainshaft: Disassembly

WARNING: This page is about a different variant/trim than selected.

Prior to disassembly of the mainshaft, measure and record the end play for 1st and 2nd gears. Refer to 1ST & 2ND GEAR END PLAY SPECIFICATIONS chart for standard values:

1ST & 2ND GEAR END PLAY SPECIFICATIONS

Gear	mm	in
1st	0.20 - 0.30	0.007 - 0.011
2nd	0.06 - 0.16	0.002 - 0.006

Fig 1: Measuring Record End Play For 1st And 2nd Gears

Courtesy of FORD MOTOR CO.

Remove and discard the snap ring.
Remove the C-ring holder.
Remove the mainshaft C-ring.
Using the special tool, remove the mainshaft rear bearing.

Fig 2: Removing Mainshaft Rear Bearing
Courtesy of FORD MOTOR CO.
Remove and discard the snap ring.
Using the special tool, remove the 5th main gear and the 4th main gear together.
- Discard both gears.
  
  Fig 3: Removing 5th Main Gear And 4th Main Gear Together
  Courtesy of FORD MOTOR CO.
Remove the 4th gear main adjusting shim.
Remove the 3rd/4th gear shaft spacer.
Remove the 3rd main gear, 2nd main gear, 2nd gear needle bearing, 2nd gear bushing, 1st and 2nd gear synchronizer assembly, 1st and 2nd gear synchronizer rings, 1st main gear, reverse main gear, 1st gear needle bearing, and 1st gear bushing together.
- Discard the 3rd main gear, the reverse main gear, and the 1st and 2nd gear synchronizer assembly.
  
  Fig 4: Discarding 3rd Main Gear
  Courtesy of FORD MOTOR CO.
Inspect all mainshaft parts for damage, peeling, dents, uneven wear, bending, etc. Install new parts as necessary.

Fig 5: Inspecting All Mainshaft Parts For Damage, Peeling And Dents
Courtesy of FORD MOTOR CO.
Inspect the synchronizer rings for damage. Install new parts as necessary.

Fig 6: Inspecting Synchronizer Rings For Damage
Courtesy of FORD MOTOR CO.

NOTE: The outer synchronizer ring, synchronizer cone and inner synchronizer ring have a set control clearance. If the measurement exceeds specification, install all 3 parts as a set.

Fig 7: Checking Clearances Of Double Cone Synchronizer For 1st Gear

Courtesy of FORD MOTOR CO.

Check the clearances of the double cone synchronizer for 1st gear. If any of the clearances are beyond specification, install new parts as a set.

NOTE: If the difference in measurements is greater than 0.2 mm (0.079 in), install new parts.

Fig 8: Measuring Clearance More Points Diagonally Between Synchronizer Cone And Inner Synchronizer Ring

Courtesy of FORD MOTOR CO.

Using the special tool, measure the clearance at 2 or more points diagonally between the synchronizer cone and the inner synchronizer ring. Install new parts if not within specification.

NOTE: If the difference in measurements is greater than 0.2 mm (0.079 in), install new parts.

Fig 9: Measuring Clearance Between Outer Synchronizer Ring And Synchronizer Cone

Courtesy of FORD MOTOR CO.

Measure the clearance between the outer synchronizer ring and the synchronizer cone at 2 or more points diagonally opposite and calculate the mean value. Install new parts if not within specification.

CAUTION: The outer synchronizer ring, synchronizer cone, and inner synchronizer ring have a set control clearance. If the measurement exceeds specification, replace all 3 parts as a set.

Check the clearances of the triple cone synchronizer for 2nd gear. If any of the clearances are beyond specification, install new parts as a set.

NOTE: If the difference in measurements is greater than 0.3 mm (0.01 in), install new parts.

Fig 10: Measuring Clearance 2 Or More Points Diagonally Opposite And Calculate Mean

Courtesy of FORD MOTOR CO.

Measure the clearance at 2 or more points diagonally opposite and calculate the mean. If the measurement is not within specification, install new parts.

NOTE: If the difference in measurements is greater than 0.17 mm (0.007 in) install new parts.

Fig 11: Measuring Clearance 2 Or More Points Diagonally Opposite And Calculate Mean

Courtesy of FORD MOTOR CO.

Measure the clearance at 2 or more points diagonally opposite and calculate the mean. If the measurement is not within specification, install new parts.

NOTE: If the difference in measurements is greater than 0.3 mm (0.01 in), install new parts.

Fig 12: Measuring Clearance 2 Or More Points Diagonally Opposite And Calculate Mean

Courtesy of FORD MOTOR CO.

Measure the clearance at 2 or more points diagonally opposite and calculate the mean. If the measurement is not within specification, install new parts.