Chapter 12 HXYLX

5-3 Adjusting the timing belt tension (X-axis)

1)Temporarily tighten the motor installation bolt.

2)Remove the belt cover, and install the adjustment bolt (M5). Apply belt ten- sion. (Refer to the following photograph.)

3)Tighten the motor fixing bolt.

4)As shown below, place the measuring instrument's head near the belt, and pull the center of the belt span with a hexagon wrench, etc.

5) Refer to the following table, and adjust the belt tension.

Frequency

Tension (N)

Tension (kg)

Span length

Belt unit weight

(Hz)

 

 

(mm)

(kg/m)

207 to 219

88 to 98

9 to 10

100

0.051

 

 

 

 

 

6)When the appropriate tension has been set, tighten the motor installation bolt, and measure the tension again.

(Note that the tension will increase as the bolt is tightened.)

7)Remove the adjustment bolt, and install the belt cover.

12-24

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Image 270
Yamaha 4-axis model, 3-axis model owner manual Adjusting the timing belt tension X-axis