FX-3R Maintenance Guide
2-12
2-5. Replacing the Belts
2-5-1. Replacing the Timing Belt Z
After the timing belt Z has been replaced, it is absolutely necessary to re-input the MS parameters
related to the Z-axis home position adjustment, Z-axis height, and laser. (For details of input items,
see section 2-7.)
Rev. 1.00
1) Loosen the SEMS cap bolts
c
(
×
3) shown
in the figure on the right.
2) Replace the timing belt Z.
3) Reassemble the components in the
reverse order of disassembly.
∗
Apply Loctite 242 to the Z-motor
mounting screws (3 pcs.) and tighten
them with a tightening torque of 2.3 N
･
m.
c
SL6031692TN
SEMS cap bolt with
washer M3
×
16
40046522
Timing belt Z
Figure 2-5-1 Removing the Z-motor
∗
Adjust the belt tension following section 2-2-1.
2-5-2. Replacing the Timing Belt
θ
After the timing belt
θ
has been replaced, it is absolutely necessary to re-input the MS parameters
related to the Z-axis home. (For details of input items, see section 2-7.)
1) Detach the bearing base
c
.
(L1 to L3: bearing base LL, L4 to L6: bearing base LR)
2) Detach the ball spline from the coupling
d
.
3) Pull out the spline housing downward and the spline
shaft upward.
4) Replace the timing belt
θ
.
5) Reassemble the components in the reverse
order of disassembly.
∗
When the bearing base L is secured, make sure that
the shaft is rotated smoothly.
∗
Adjust the belt tension following section 2-2-2.
L1 to L3: Bearing base LL
c
L4 to L6: Bearing base LR
c
Ball spline
Coupling
d
40046521
Timing Belt T
Timing Belt
θ
Figure 2-5-2 Replacing the
Timing Belt
θ