Roland ep-5 Service Manual download pdf (Page 18)

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Lower arm

O-rings

Once the front cover is removed, the lower arm can be easily accessed.

Remove the indicator, feedback spring and the cam.

Loosen screw 2 and remove twist stop 1.

Remove screw 3, lower arm 4, rod 5 and spring 6.

Check rod and lower arm for wear, replace if necessary. Clean the rod

and install it in the lower arm. The lower arm should move easily and

smoothly.

Install the lower arm and rod assembly into the positioner housing,

making sure that the spring 6 is attached properly to the lower arm

and positioner housing.

Secure the lower arm and rod assembly with the screw 3.

Check again that the lower arm moves smoothly.

Apply a small amount of grease on the small tongue on the lower arm,

then install and secure the twist stop.

Install cam, feedback spring, indicator and front cover.

With time and use, O-rings can become brittle. This can cause poor

operation and even failure of the positioner.

Always check O-rings when performing any work on the positioner

and replace bad O-rings.

A thin layer of silicon grease applied on the NBR (Black) O-rings

prolongs their life. On Q (red) O-rings, use a non silicon based grease.

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Roland ep-5 Service Manual Page 18