Chapter 7: Repair Procedures
Left Rail Internal Repairs
Service Manual 7-29
7.5.3 Replacing Rollers, Tension Springs, and Cable Carrier Links
Refer to “Figure 7-26 Rollers and Tensioning Spring”.
1. The rollers can be removed one at a time by removing the screw (4 mm hex key) at their hub and pulling
off the roller and bearing. When reinstalling, torque the screws to 45 in. lbs (reference).
2. To replace the roller tensioning spring, first use pliers to pull the tension spring off the roll pin at the end
of the lift rail. Then take off the 2 center rollers and slide the tensioning plate out of the lift rail. Remove
the old spring.
3. Reinstall the 2 center rollers. Use a hex key in the center access slot to lift the tensioning plate up so
that you can screw the rollers into the holes in the plate. Torque the screws to 45 in. lbs (reference).
4. Using pliers, pull the tensioning spring up onto the roll pin at the end of the rail.
5. Individual links of the flexible cable carrier snap out of the belt by unfolding them from their center. To
replace the link that fastens the carrier to the channel, drill out the rivet and replace it with a M3 x 8
screw.
7.5.4 Reassembling the Left Upright
Refer to “Figure 7-23 Rail Decorative Strips, End Caps, and Wire Cover”, “Figure 7-28 Left Inner Rail”,
“Figure 7-29 Left Rail Springs and Spools”, and “Figure 7-30 Re-attaching the Upright”.
1. Reinstall the pinch guard. Be sure to orient the pinch guard with the holes in the keyhole slots at the
bottom of the rail.
2. Position the lift rail and the cable carrier channel so that the plastic boss is past the metal stop block
and the coil springs have a slight tension. Slide the channel and lift rail together so that the last
tensioning roller is just entering the upright. Align the screws with the holes. Slide the assembly back
Intermediate locking hole (horizontal)
FIGURE 7-30. Re-attaching the Upright
Mounting studs
Bracket casting
Shipping locking hole
Upright
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