Minoura POWERMATIC, RDA80 REPLACE BELT guide

How To Replace V-Belt – RDA80 & PowerMatic

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1

2

Remove the Mag unit from the frame and place on a
table.

Remove the bolt and oval washer from both upper and
bottom sides.

5

6

Flip over the Mag unit.

Remove 3 screws from the outer edge and 2 screws
from the Main Arm.

Do NOT loosen
the center screws.

3

4

Push the Pulley Arm to come off the V-Belt.

Pull out the Pulley Arm from the Mag unit.

7

8

Come off the backside cover.
Be careful not to bend the metal Joint Pin.

Loosen the Nylon nut to remove the Alloy Rotor.

9

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Flip over the Mag unit again.

13

Assemble the Mag unit.

10

11

Remove the Top Cover.

Now the Main Arm can be removed to replace the
V-Belt.

14

15

Hook the belt to the pulley.

Turn the pulley to t the belt.

To adjust the belt tension properly, put a screwdriver
between the metal Joint Pin and the Main Arm, then
cam out to widen the clearance.
While keeping this position, tighten the bolts to keep
the tension.

If the belt has been loosened,
both V-Belt and the plastic
pulley will be worn out quickly.
If the tension is too tight, the
initial resistance must gain too
much.

12

There are two types of Pulley Arm. The older one has
just one hole, and the latest one has two holes.
Use the upper hole in the beginning, then switch to the
lower hole when the belt tension comes loose.

2-hole Type (New)

Use the upper hole

1-hole Type (Old)

16