19
Belt Replacement
IMPORTANT:
To avoid damage, do not use a pry bar to force the
belts over the pulley grooves.
1
. Loosen the pulley bolts on the rear wall of the drum.
2.
Loosen the adjusting screw.
3.
When replacing belts, replace them with a complete set.
Make sure the new belts are the same type as the old ones.
4.
Replace the pulleys if they are damaged.
5.
After replacing the belts, check pulley alignment, belt
tightness, bolts, and nuts.
6.
Keep the belts and pulleys clean and free of oil, lubricants,
water, etc.
Pulley Alignment:
For reliable operation and long belt life, the pulley must be
properly aligned. Inspect the alignment by placing a ruler on the
pulley faces. If all points (A, B, C, and D) are touching the ruler,
the pulley is aligned.
1. Main housing with the pulley
2. Drum
3. Drive motor
4. Ruler
Tightening Moments
Bolts:
A.
Bolts of hub flange
B. Bolts attaching the pulley to the nut of fixing housing
C. Bolts attaching the motors plate to the external drum
D. Bolts attaching the inner drum to the shaft
E. Bolts attaching the door brackets
Tightening Moments Values of Bolts and Nuts
Bolt
Tightening
Tightening
(nut) Dimension Number of Pcs. Moments (Nm) Moments (lbf.ft)
A
M20 x 65
24 (12)
600.00
443.00
B
M12 x 30
8
70.00
52.00
33 kg TYPE:
1
450.00
332.00
nut KM13
C
M12 x 35
6
70.00
52.00
D
M30 x 80
1
800.00
590.00
E
M12 x 38
4
25.00
18.50
Tighten the loosened bolts using the torque value in the following
table:
1
2
3
4
A
B
C
D
IMPORTANT:
■
Once every three months or every 500 working hours
(whichever comes first) inspect the tightness of the bolts.
■
Replace a damaged bolt with a bolt of the same strength
value marked on its head.