Mainshaft
Tools Required
• | J 39473
Mainshaft
Bearing Installer |
Important: Measure the 4th speed gear synchronizer wear gap before disassembling
the mainshaft.
- Install the input shaft in the adapter plate.
- Install the mainshaft on the input shaft.
- Using a feeler gauge measure the gap between the 4th speed gear
blocking ring and the 4th speed gear.
- Replace the 4th speed gear friction cone and blocking ring when
the gap is less than 1.27 mm (0.050 in).
Notice: Do not overtighten the J 36513 split plate past the gear teeth or damage
to gear may occur.
- Using the
J 36513
,
close the split plate only enough to support the gear teeth, and the
J 39442
, remove the following
parts in order:
5.1. | If an O-ring is present on the mainshaft, remove and discard the
O-ring. The O-ring was used for manufacturing purposes only. |
5.2. | The mainshaft large tapered bearing |
5.4. | The 1st speed gear caged needle bearing |
5.5. | The 1st speed bearing spacer |
- Remove the following parts
in order:
6.1. | The 1st speed gear inner cone |
6.2. | The 1st speed gear friction cone |
6.3. | The 1st speed gear blocking ring |
Important: The synchronizer hubs and sliding sleeves are a selected assembly. Keep
these parts together as originally assembled.
- Scribe a mark on the synchronizer hub and on the sleeve. This will help
you to reinstall the parts in the same position.
- Remove the 2nd speed gear.
The 1st/2nd speed synchronizer assembly, the 2nd speed gear blocking ring,
the 2nd speed gear friction cone, and the 2nd speed gear inner cone
will press off with the 2nd speed gear. Use the
J 36513
in an inverted position,
J 39442
and a hydraulic press.
- Remove the 2nd speed gear
spacer and caged needle bearing.
- Remove the mainshaft small
tapered bearing. Use the
J 39442
, the
J 39443
, and
a hydraulic press.
- Discard the small tapered bearing.
- Remove the following parts
in order:
12.2. | 4th gear thrust washer |
12.3. | 4th gear inner cone |
12.4. | 4th gear friction cone |
12.5. | 4th gear blocking ring |
Important: The synchronizer hubs and sliding sleeves are a selected assembly. Keep
these parts together as originally assembled.
- Scribe a mark on the synchronizer hub and on the sleeve. This will help
you to reinstall the parts in the same position.
- Use the
J 39473
, V-blocks, and a hydraulic press to
remove the 3rd speed gear. The 3rd/4th speed synchronizer assembly, the
3rd speed gear blocking ring, the 3rd speed gear friction cone,
the 3rd speed gear inner cone, thrust washer, and spacer will
press off with the 3rd speed gear.
- Remove the 3rd speed gear
caged needle bearing.
Input Shaft
Tools Required
Important: Do not replace the tapered bearing or the bearing race unless inspection
shows that the bearing or the race are damaged.
- Remove the tapered bearing
from the input shaft, using the
J 22912-O1
and a hydraulic press.
- Remove the bearing race
from the input shaft, using the
J 23907
and the
J 39594
.