COUNTER DRIVE GEAR DISASSEMBLY/ASSEMBLY

id051700501000


Components

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1
Rear planetary ring gear
2
Snap ring
3
Rear planetary ring gear flange
4
Nut
5
Washer
6
Snap ring
7
Tapered roller bearing
8
Counter drive gear
9
Bearing race
10
Bearing race
11
Snap ring
12
Center support
13
Tapered roller bearing


Disassembly Procedure

1.  Using the snap ring pliers, loosen the snap ring and remove the rear planetary ring gear.

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2.  Using a flathead screwdriver, remove the snap ring from the rear planetary ring gear.

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3.  Remove the ring gear flange from the rear planetary ring gear.

4.  Using a flathead screwdriver and hammer, pry back the crimps locking the washer.

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Caution
•  If the lockwasher crimps are not completely pried back, the tool cannot fit over the bolt properly and the bolt cannot be loosened.

5.  Using the SST, remove the nut and the washer.

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6.  Using a flathead screwdriver, remove the snap ring from the counter drive gear.

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Caution
•  Do not drop the tapered roller bearing.

7.  Using the SST, remove the counter drive gear and tapered roller bearing.

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8.  Using a flathead screwdriver and hammer, remove the bearing race inner from the counter drive gear.

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9.  Using a flathead screwdriver and hammer, remove the bearing race outer from the counter drive gear.

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10.  Using a flathead screwdriver, remove the snap ring from the counter drive gear.

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Note
•  The tapered roller bearing cannot be removed from the center support.
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•  The tapered roller bearing and center support must be replaced as a set.


Assembly Procedure

Note
•  The tapered roller bearing and bearing race outer must be replaced as a set.

1.  Using the SST and a press, install the tapered roller bearing to the center support.

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Substitution SST
•  49 L033 101
Outer diameter: 70—76 mm {2.76—2.99 in}
Inner diameter: 68.2 mm {2.69 in} or more
Plate thickness: 1 mm {0.04 in} or more

2.  Using a flathead screwdriver, install the hole snap ring to the counter drive gear.

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3.  Using the old bearing race and the steel plate as shown in the figure, install the new bearing race outer to the counter drive gear.

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4.  Using the old bearing race and the steel plate as shown in the figure, install the new bearing race inner to the counter drive gear.

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Caution
•  Do not press fit the bearing too deeply.
•  Verify that the bearing is press fit to allow the installation of the nut.

5.  Using the SST and a press, install the counter drive gear with the tapered roller bearing.

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Substitution SST
•  49 W027 001
Outer diameter: 70—81 mm {2.76—3.18 in}
Plate thickness: 1 mm {0.04 in} or more
Note
•  Verify that the claw of the washer is fit into the groove on the center support.
•  Verify that the nut is installed in the correct direction.

6.  Install the washer and nut.

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7.  Using the SST, tighten the nut.

8.  Using a spring balance, measure the starting and rotating torque of the counter drive gear.

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Counter drive gear starting and rotating torque

N·m {kgf·cm, in·lbf}

Bearing

Starting torque

Rotating torque
New
0.40 — 0.50 {4.08 — 5.09, 3.55 — 4.41}
0.40 — 0.48 {4.08 — 4.89, 3.55 — 4.24}
Reused
0.20 — 0.25 {2.04 — 2.54, 1.77 — 2.20}
0.20 — 0.24 {2.04 — 2.44, 1.77 — 2.11}

•  Adjust the starting and rotating torque by tightening the nut.
•  If the starting and rotating torque does not fall within the specification, loosen the nut and retighten the nut to adjust torque.

9.  Using a flathead screwdriver and hammer, crimp down the washer.

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10.  Using a flathead screwdriver, install the hole snap ring to the counter drive gear.

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11.  Install the rear planetary ring gear flange to the rear planetary ring gear.

12.  Using a flathead screwdriver, install the snap ring in the groove.

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13.  Install the rear planetary ring gear to the counter drive gear.

14.  Using the snap ring pliers, while loosening the snap ring, install the rear planetary ring gear.

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