Tools Required
• | J 39055 Forward
Clutch Inner Seal Protector |
• | J 39056 Coast
Clutch Seal Protector |
- Using the J 28585
, remove the snap ring (834) from the
final drive sun gear shaft.
- Remove the parking lock gear (833) and the thrust bearing (832).
- Remove the forward and
coast clutch support with the low roller clutch assembly (822-830).
- Remove the thrust bearing (714).
- Lift the forward and coast
clutch housing (801) off of the coast clutch hub.
- Remove the thrust bearing (718) from the forward coast clutch
housing (801).
- Separate the input carrier
(708) from the input internal gear and flange.
- Lift the input carrier
assembly (700-708) off of the final drive sun gear shaft (722).
- Remove the thrust bearing (710) from the input carrier assembly
(700-708).
- Remove the snap ring (709)
in order to separate the input carrier (700) from the reaction internal gear
(708). The thrust bearing will stay inside of the input carrier (700).
- Inspect the snap ring
(709) for burrs or damage.
- Inspect the input carrier (700) pinions for nicked or broken teeth.
- Inspect the input carrier internal gear (708) for broken teeth.
- With a feeler gauge, measure
the input carrier (700) end play. The end play should be within a range of
0.09-0.90 mm (0.003-0.035 in).
- Place the input carrier
assembly (700) into the reaction internal gear (708).
- Install the snap ring (709).
- Install the thrust bearing
(710) onto the input carrier and reaction internal gear assembly.
- Remove the following parts:
• | The input internal gear snap ring (717) |
• | The coast clutch hub (719) |
• | The thrust washer (720) |
- Remove the forward sprag
outer race (721) and forward sprag from the input internal gear flange (708/725).
Remove the thrust washer (713).
- Remove the snap ring (709)
from the input internal gear (708).
- Lift the input internal gear flange (725) from the input internal
gear (708).
- Inspect the input internal
gear flange (725) for broken teeth. Inspect the input internal gear flange
bushing.
- Inspect the input internal gear (708) for nicked or broken teeth.
- Install the input internal
gear flange (725) into the input internal gear (708).
- Install the input internal gear snap ring (709).
- Remove the forward sprag
outer race (721).
- Disassemble the forward sprag clutch (716).
- Inspect the forward sprag (716) for the following:
• | Damage to the inner side of the race |
Important: Oil feed holes in the forward sprag outer race must face the input internal
gear.
Important: The lip on the forward sprag cage must face the input internal gear.
- Assemble the forward sprag clutch (716).
- Install the forward sprag clutch (716) into the forward sprag
outer race (721).
- Install the thrust washer
(713) onto the input internal gear flange (708/725).
- Install the forward sprag and outer race (721) onto the input
internal gear flange (708/725).
- Check that the forward
sprag rotation freewheels in a counterclockwise direction.
- Install the thrust washer
(720) onto the coast clutch hub (719).
- Install the coast clutch hub (720) onto the input internal gear
flange (708).
- Install the snap ring (717) onto the input internal gear flange
(708).
- Install the thrust bearing
(718) onto the coast clutch hub.
- Remove the forward and
coast clutch housing snap ring (818).
- Remove the forward and coast clutch backing plate (819), and all
of the forward clutch fiber (817) and steel (816) plates. Remove the apply
plate (840).
- Remove the forward and
coast clutch belleville plate (841) and backing plate (840).
- Remove the coast clutch fiber (814) and steel (813) plates. Remove
the apply plate (812).
- Using the J 23327
, compress the spring and retainer assembly
(820).
Important: Do not overexpand the snap ring.
- Remove the snap ring (821).
- Remove the J 23327
.
- Remove the spring and retainer assembly (820).
- Remove the coast clutch
piston assembly (810).
- Remove the apply ring (811). Remove the forward clutch piston
and seals assembly (807).
- Inspect the forward and
coast clutch housing (801) for the following:
• | Feed passages that are plugged |
• | Splines that are worn or damaged |
• | Bushings for excessive wear |
- Inspect the forward clutch
piston seals (808, 809) for damage. If the seals are damaged, replace the
piston.
- Inspect the forward clutch piston for cracks or damage to the
seal grooves.
- Install the new piston
seals onto the forward clutch piston (807). Make sure that the outer seal
does not roll backwards.
- Using the J 39055
, install the forward clutch piston (807) into the forward and coast
clutch housing (801).
- Remove the J 39055
.
- Inspect the snap ring
(821) for damage.
- Inspect the spring and retainer assembly (820) for a damaged cage
and distorted or missing springs.
- Inspect the coast clutch piston assembly (810) for damage.
- Inspect the apply ring (811) for damage.
- Install the apply ring
(811) into the forward and coast clutch housing (801).
- Using the J 39056
, install the coast clutch piston assembly into the coast clutch housing.
Make sure that the outer seal does not roll backwards.
- Remove the J 39056
.
- Install the spring and
retainer assembly (820) into the forward and coast clutch housing.
- Using the J 23327
,
compress the spring and retainer assembly (820). Install the snap ring (821).
- Remove the J 23327
.
- Install the coast clutch
apply plate (812) into the forward and coast clutch housing (801).
- Install the coast clutch fiber (814) and steel (813) plates.
- Install the forward and coast clutch plate (840), and the forward
and coast clutch belleville plate (841).
- Install the forward and
coast clutch plate (840)
- Install all of the forward clutch fiber (817) and steel (816)
plates.
- Install the forward clutch backing plate (819).
- Install the snap ring (818).
- Install the coast clutch
hub with the thrust bearing, the forward sprag race, and the input internal
gear and flange into the forward and coast clutch housing.
- When the splines on the
hubs are properly engaged, the bushing on the input carrier will drop below
the forward and coast clutch support hub, producing a dull metal sound. The
distance from the top edge of the forward and coast clutch housing to the
top edge of the input internal gear is approximately 22 mm (0.886 in).
- Install the input carrier
and reaction internal gear with the thrust bearing onto the input internal
gear.
- Remove the low roller
clutch assembly (830) from the forward and coast clutch support (822).
- Remove the three oil seal
rings (829) from the forward and coast clutch support (822).
- Remove the cooler return seal (828).
- Inspect the forward and
coast clutch support (822) for the following:
• | Damage to the seal ring grooves |
• | Damage to the checkball |
• | Damage and wear to the bushing and transfer sleeve |
- Install new oil seal rings
(829).
Important: Do not press the seal so that the shape of the seal is distorted in
the bore.
- Install a new cooler return seal (828) with the appropriate socket.
- Install the low roller
clutch assembly (830) into the forward and coast clutch support (822). Turn
the low roller clutch assembly (830) counterclockwise as far as it can go.
The tabs on the low roller clutch assembly (830) must rest on the face of
the forward and coast clutch support (822).
- Install the thrust bearing
(714) onto the forward and coast clutch assembly.
- Install the forward and coast clutch support and low roller clutch
assembly (822/830) onto the forward and coast clutch assembly.
- Check the rotation of
the low roller clutch assembly. The low roller clutch assembly should freewheel
in the counterclockwise direction.
- Install the final drive
sun gear shaft (722).
- Install the thrust bearing
(832), the parking lock gear (833), and the snap ring (834) onto the final
drive sun gear shaft (722).