Joint #4 - Replacing The Timing Belt - Epson C Series Maintenance Manual

6-axis robots

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C8 Maintenance 8. Joint #4

8.3 Joint #4 - Replacing the Timing Belt

Belt tensile jig

Cross-point screwdriver (#2)

Belt tension meter

Masking tape

Braid tube (600 mm or longer)

* The belt tensile jig is an assembly jig. Use the jig when adjusting belt tension.

The brake is mounted on each joint to prevent the arm from lowering due to its own weight while the

Controller power is OFF or the motor is OFF status. The brake does not work during replacement. Be

careful when performing maintenance work.

Removal: Joint #4 Timing belt

1. Remove the Joint #4 motor unit.

For details, refer to C8 Maintenance: 8.1 Joint #4 – Replacing the Motor, Installation steps (1) through

2. Remove the connectors inside the Arm #3 and the air tube

(transparent).

X71, X72, X041,

BR041, BR051, PS,

BT4, BT51, X141, X151, X161

3. Remove the cable bracket inside the Arm #3.

Hexagon socket head cap bolts: 4-M4×10

width across flats: 2.5 mm

width across flats: 3 mm

(AB100 or equivalent)

For M3 hexagon socket head cap bolt

For M4 hexagon socket head cap bolt

For cross recessed head screws

Refer: Unitta U-505

For cutting the wire tie

For protecting the connector clips

For passing the cables

For passing the cables

C Series Maintenance Manual Rev.2