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Fitting the TiLite CR1
Center of Gravity
Parts:
1. Camber Tube Bracket
2. Bottom Clamp Screws - M5x25 SHCS
3. Camber Tube
4. Strut
5. Strut Clamp
6. Strut Clamp Screw - M4x12 SHCS
7. Strut Bracket
8. Strut Spacers
9. Frame Clamp
10. Frame Clamp Screws M5x16 SHCS
Adjustment:
The CR1 allows for minor adjustment to the center of gravity to fine tune the wheelchair's feel
and responsiveness to the user's preference. If an adjustment is desired, follow these steps:
1. Loosen, but do not remove, the bottom clamp screws located at the base of the strut
assembly on both sides.
2. Loosen the frame clamp screws located on the inside of the assembly where the strut
bracket connects to the frame on both sides. It is recommended to undo the rear strap of
the seat upholstery and lift the back portion of the seat sling off of the support straps.
This helps to allow their repositioning after the adjustment to the center of gravity position
is complete.
3. Make the desired adjustment forward or backward.
4. Retighten the frame clamp bracket screws. Torque to 8Nm / 6 ft lbs. It is important to make sure the
left and right strut assemblies are adjusted symmetrically to ensure proper alignment and performance.
If a large enough adjustment is made, it will be necessary to add (if adjusting forward) an additional strut
spacer to both vertical struts to ensure the caster forks remain square. If adding a spacer, it is important to
make sure the strut clamp sits flush with the strut, just below the spacers, to ensure proper tightening of the
strut onto the lower CG Bracket. If a large enough adjustment is made backward, it will be necessary to
remove the existing strut spacer to ensure squareness. To determine if adding or removing a spacer is
required for the desired change to the center of gravity position, please refer to the chart at the bottom of
this page. The extra spacers (2) are included in the Owner's Packet.
a. If strut spacers were added or removed, make sure the strut clamp is torqued to 4Nm / 3.0 ft lbs.
5. Install the replacement camber tube with camber tube bracket and bottom clamp screws into the strut.
6. Tighten the bottom clamp screws enough to secure the camber tube, but DO NOT fully torque. Check that the
camber tube is centered and that the wheels are properly towed.
7. Progressively torque screws in 2Nm / 1.5 ft lb increments, switching between screws until torque listed in the images below pertaining to type of clamp
on the wheelchair is achieved. If clamp gaps are significantly different, loosen screw on smaller clamp gap side by at least one turn, re-torque opposite bolt
to specified value, then re-torque loosened bolt to specified value. It is acceptable to exceed specified torque value by 2Nm / 1.5 ft lb to achieve better
equivalence in clamp gaps or until clamp gaps are nearly equal.
8. Re-check that the camber tube is centered and that the wheels are properly towed.
Rear
Clamp
Gap
Permobil TiLite CR1 Service Manual
Non Anti-Tip Camber Clamp
Torque to 6Nm / 4.5 ft lbs
Front
Clamp
Gap
Center of Gravity Adjustment Range Chart
-1"
-3/4"
Frame 1
-1 Spacer
Frame 2
-1 Spacer
Frame 3
-1 Spacer
Please note: The initial center of gravity position is shown as 0" in the chart above.
Tools:
1. 4mm Hex Wrench
2. 3mm Hex Wrench
3. Torque Wrench
Strut Bracket
Strut Spacer
Strut Clamp
Strut Clamp Screw
Anti-Tip Camber Clamp
Torque to 8Nm / 6ft lbs
Rear
Clamp
Gap
-1/2"
-1/4"
0"
1/4"
1/2"
3/4"
No Change
+1 Spacer
No Change
+1 Spacer
No Change +1 Spacer +2 Spacers
4
Frame Clamp
Frame Clamp
Screws
Strut
Camber Tube
Camber Tube
Bracket
Bottom Clamp Screws
Strut
Spacer
Front
Clamp
Gap
1"
Strut clamp is
flush with the
end of strut
below spacer
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