Preventive
Maintenance
Page 4-3
Drive Belt Maintenance
There are two drive belts that may become loose,
worn or cracked. See Figure 1.
Primary Belt - This is the wider of the two belts.
It has grooves that keep it aligned on the large upper
pulley. Unless the unit has been serviced and not put
back together properly, it is unlikely that the primary
belt will need to be re-tensioned.
Secondary Belt - This is the narrower of the two
belts. It has grooves that keep it aligned on the
flywheel’s drive pulley. It is unlikely that the
secondary belt will become loose because it is a
stretch-fit belt. Unless the unit has been worked on
and not put back together properly, it is unlikely the
tension will change.
Follow this Drive Belt Maintenance procedure to
ensure that the belts are tensioned properly and in
good condition. See the Service Schedule in this
chapter for a minimum schedule for checking the
belt tension and condition. NOTE: If a belt has cracks
or appears worn, it must be replaced immediately by
a qualified service technician.
Tools Required
• Phillips head screwdriver
! WARNING: Disconnect the power cord before beginning this procedure. Keep wet items away
from inside parts of the unit. Electrical shock could occur even if the unit is
unplugged.
1. Read and understand this Drive Belt Maintenance section thoroughly before proceeding to
step 2.
2. Disconnect the external power source.
A. If your unit has the optional AC Power Kit, Unplug the power cord from the power outlet.
3. Remove the access cover.
A. Using a Phillips screwdriver, remove the two lower screws securing the access cover.
Primary
Drive Belt
Figure 1
Secondary
Drive Belt
Cybex Arc Trainer 630A Owner’s Manual
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