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Work procedure:

1. Insert Poly sliders (x2) into the boss of BK drive frame As.
2. Install BK drive frame As.
*Securely fit the pawl and boss of BK drive frame As into the main drive frame.
*When conducting the work for inserting Poly slider, please make sure the insertion location and QTY are correct.
*Please make sure that the sintered bearing is inserted into the drive farme.
*When conducting this work, please be careful not the harness of the clutch to be caught.
* Belt tooth side must not be damaged.

Harness of the clutch 
must not be caught.  

NOTE:
There are two Poly sliders.

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Work procedure:

 *Before tightening the screw, please turn the shaft, and check that the lower coupling can rotate.
1. (1) Tighten M3 screw (x3).
2. Make wiring for each clutch, and then connect to the connector.

M3 screws
Tightening positions

Pathway for positive rotation 
of the clutch 

Connect

Harness of the clutch 
must not be caught.  

There should not be any

looseness within this area.

Harness of the clutch 
must not be caught.  

Connect

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Work Procedure：
1. Remove the main drive UN.
2. Remove the E Ring
3. Remove the gear (Black) and the parallel pin.  (Be careful not to lose the parallel pin.)
4. Insert the parts in the order of Poly slider, gum damper, and gear (Black).

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4. Insert the parts in the order of Poly slider, gum damper, and gear (Black).
5. Insert the parallel pin, and then insert the gear (Black) adjusting to the parallel pin.
6. Install E Ring.

Ｅ Ring

Ｅ Ring

Parallel pin

Gum damper

Poly slider

Gear 58Ｔ

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Work Procedure：

1. Remove the main drive UN.
2. Remove CL drive frame As. (Be careful not to drop Poly slider.)

*Make sure that DV UN is removed.

(3) Remove the screw (x 4).

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(3) Remove the screw (x 4).

(4) Remove the pawl (x4).

Work Procedure：

1. Remove Poly slider W (x8) from DV drive shaft M and DV drive shaft C.
2. Remove Pulley (White) (x4) from DV drive shaft M and DV drive shaft C.
*Be careful not to drop the parallel pins.
3. Replace Pulley 33P with non-defective one.
4. Reinstall Pulley 33P to DV drive shaft back to the original state.
*Be careful not to forget to insert the parallel pins.
5 M k

th t P l

lid

W ( 10)

i

t d Th

i

t ll CL d i

f

A

○ is marked on non-defective Pulley 33P .
(Real one has no color)

5. Make sure that Poly slider W (x10) are inserted.  Then install CL drive frame As.
* Securely fit the pawl and boss of CL drive frame As into the main drive frame.
*When conducting the work for inserting Poly slider, 

please make sure the insertion location and QTY are correct.

(Real one has no color)

Note) Number of Poly slider 
varies depending on the version 
of drive UN but there is no 
problem with the number of Poly 
sliders which are originally

Replace Pulley 33P (White) (x4).

of drive UN but there is no 
problem with the number of Poly 
sliders which are originally 
installed.  There it is not 
necessary to add Poly slider.

Replace Pulley 33P (White) (x4).

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