Replacing The Timing Belt - Epson LS-B Series Maintenance Manual

LS3-B LS6-B Maintenance 8. Joint #4

8.2 Replacing the Timing Belt

U1 belt
U2 belt
Maintenance
U1 belt
parts
U2 belt
Hexagonal
wrench
Cross-point screwdriver (#1)
Torque wrench
Nippers
Tools
Force gauge
Sonic tension meter
Suitable cord (Length about 800 mm)
■ The belt must be installed with proper tension; otherwise the following problems
may occur.
If falling below the lower limit : Jumping of the belt gears (position gap)
CAUTION
If exceeding the upper limit
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
NOTE

LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
72
Name
width 10 mm
width 16 mm
width 10 mm
width 20 mm
width across flats: 2.5 mm
width across flats: 3 mm
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Qty.
1 LS3-B: 1554775
1 LS3-B: 1554777
1 LS6-B: 1612286
1 LS6-B: 1763573
1 For M3 screw
1 For M4 screw
1 For pan head screw (small)
1
1 For cutting wire tie
LS3-B: Axial tension (pulling force)
U1 : 39 N (4.0 ± 0.5 kgf)
U2 : 69N (7.0 ± 0.5 kgf)
1
LS6-B: Axial tension (pulling force)
U1 : 56 N (5.7 ± 0.5kgf)
U2 : 125 N (12.3 ± 0.5 kgf)
1 For belt tension
: Abnormal noise or vibration (oscillation),
decline in the life of driving parts
LS-B series Maintenance Rev.1
Note