Assemble Abdominal Crunch Bench

  1. Attach the pivot arm base assembly to the lower base assembly, check for level and tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 Pivot Arm Base Assembly 1
    2 Lower Base Assembly 1
    3 M10 x 1.5 x 25mm Screw 2
    4 3/8 Washer 2
    5 M10 Hex Nylock Nut 2
  2. Attach the cross member assembly and work arm stop assembly to the base frame and tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 M10 x 1.5 x 135mm Screw 2
    2 3/8 Washer 6
    3 M10 x 1.5 x 25mm Screw 2
    4 Work Arm Stop Assembly 1
    5 M10 Hex Nylock Nut 4
    6 Cross Member Assembly 1
  3. Attach the back support assembly to the base frame and tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 Back Support Assembly 1
    2 M10 Hex Nylock Nut 4
    3 3/8 Washer 4
    4 M10 x 1.5 x 25mm Screw 4
  4. Attach the foot rest assembly to the base frame, check for level and tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 Foot Rest Assembly 1
    2 M10 Hex Nylock Nut 2
    3 3/8 Washer 2
    4 M10 x 1.5 x 25mm Screw 2
  5. With the pivot arm assembly's square-stop facing the pivot arm base assembly, attach the pivot arm assembly with the pivot shaft to the pivot arm base assembly and tighten hardware to 20-25 ft-lbs (27-34 Nm). Slide bolt retainers over hex head screws and tighten hardware to 25-29 in-lbs (2.8-3.2 Nm).
    Item Description Qty.
    1 Pivot Arm Base Assembly 1
    2 M6 Washer 8
    3 M6-1.1 X 12 Button Screw 2
    4 M10 X 1.5 - 25mm Hex Head Screw 2
    5 Bolt Retainer 2
    6 25mm Flange Bushing 2
    7 Pivot Shaft 1
    8 Pivot Arm Assembly 1
    Note: Pivot shaft found in pivot arm assembly.
  6. Attach the work arm assembly to the pivot arm assembly with the pivot shaft, then tighten hardware to 20-25 ft-lbs (27-34 Nm).. Slide bolt retainers over hex head screws and tighten hardware to 25-29 in-lbs (2.8-3.2 Nm).
    Item Description Qty.
    1 Pivot Arm Assembly 1
    2 M6 Washer 8
    3 M6-1.1 X 12 Button Screw 2
    4 Bolt Retainer 2
    5 M10 X 1.5 - 25mm Hex Head Screw 2
    6 25mm Flange Bushing 2
    7 Work Arm Assembly 1
    8 Pivot Shaft 1
    Note: Pivot shaft found in pivot arm assembly.
  7. Attach the rod end link assembly to the pivot arm assembly and work arm assembly, then tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 M10 x 1.5 x 25mm Screw 2
    2 3/8 Washer 2
    3 Rod End Link Assembly 1
    4 Work Arm Assembly 1
    5 Pivot Arm Assembly 1
  8. Make sure the work arm assembly is centered on the bumper of the work arm stop assembly. If not, adjust the work arm stop assembly (see Step 2).
    Item Description Qty.
    1 Work Arm Assembly 1
    2 Work Arm Stop Assembly Bumper 1
  9. Make sure the work arm assembly is centered on the bumper of the work arm stop assembly. If not, adjust the rod end link assembly (see Step 7).
    Item Description Qty.
    1 Work Arm Assembly 1
    2 Work Arm Stop Assembly Bumper 1
  10. Attach the weight horn assembly to the work arm assembly, then tighten hardware to 20-25 ft-lbs (27-34 Nm)..
    Item Description Qty.
    1 Work Arm Assembly 1
    2 Weight Horn Assembly 1
    3 3/8 Washer 2
    4 M10 x 1.5 x 20mm Screw 2
  11. Install the head pad and 18 X 19 pad onto the work arm assembly, then tighten hardware to 40-50 in-lbs (4.5-5.6 Nm).
    Item Description Qty.
    1 M10 x 1.5 x 70mm Screw 2
    2 CM/MJ Retainer 2
    3 1-1/4 OD x 1/4 Spacer 2
    4 Head Pad 1
    5 18 X 19 Pad 1
    6 Work Arm Assembly 1
    7 3/8 Washer 2
    8 M10 x 1.5 x 25mm Screw 2
  12. Install the back pad onto the back support assembly, then tighten hardware to 40-50 in-lbs (4.5-5.6 Nm).
    Item Description Qty.
    1 M10 x 1.5 x 100mm Screw 3
    2 CM/MJ Retainer 3
    3 1-1/4 OD x 1/4 Spacer 3
    4 Back Pad 1
  13. Gently tap 1" hole plugs into place.
    Item Description Qty.
    1 1" Hole Plug 7
  14. If desired, peel and stick label from the multi-language general warning sheet and carefully place over the English (default) label.
    Item Description Qty.
    1 Multi-Language General Warning Sheet 1
Parent topic: Assembly Procedure