Hammer Strength

HS-ABC to HS-AB Retrofit Kit

1027644-0001 AA

1.1 HS-ABC to HS-AB Retrofit Kit

This instruction sheet describes how to install the HS-ABC to HS-AB Retrofit Kit to the Hammer Strength Hammer Select Abdominal Crunch.
Tools Required:
  • 7 mm Allen wrench
  • 17 mm wrench
  • Torque wrench
  • Rubber mallet
Estimated Time Required: 1 hour
Description Qty.   Description Qty.
Cap, 2" x 3" 11-14GA, End 4   Screw, M10 x 1.5 50mm 2
Bumper, 2-1/8 x 4-5/8 1   Screw, M10 x 1.5 75mm 12
Cap, End 1.00 DIA RD 10-12 GA 2   Screw, M10 x 1.5 110mm 2
3 x 6 Flange Rubber Slipper 2   Nut, M10 Hex Nylock SS 18
Grip, 1.00 ID x .125 x 7 2   Washer, Spacer 2
Sleeve, Accordion 1.0 ID x 1 4   Cap, Grip 1.25 OD 2
Assembly, Pillow Block 4.88 x 2.75 4   Ring, Grip 1.25 OD 2
Assembly: HS-AB Linkage 1   Spacer, 0.630 ID x 0.20 2
Shaft, .625 x .406 x 1.200 2   Label, Warning, Triangle 1
Washer, 3/8 SAE SS 20   Weldment, Rear Frame 1
Washer, 3/8 ID x 1.25 OD SS 8   Weldment, Workarm 1
Screw, M10 x 1.5 35mm 6   Weldment, Cam 1
Screw, M10 x 1.5 45mm 2      

1.1.1 Assembly Procedure

Two people will be required for this procedure.

Tip: Read and understand all instructions thoroughly before assembling this unit.

1.1.2 Remove Weldments

  1. Remove cable end into cam weldment.
    Item Description Qty.
    1 Cable End 1
    2 Weldment, Cam 1
  2. Remove screws and washers securing pads to work arm using a 7mm Allen wrench.
    Item Description Qty.
    1 Pad, 8 x 6 1
    2 Pad, 18 x 10 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Screw, M10 x 1.5 35mm 2
    6 Screw, M10 x 1.5 75mm 2
  3. Remove screws and washers securing counterweight to cam weldment using a 7mm Allen wrench.
    Item Description Qty.
    1 Counterweight 1
    2 Weldment, Cam 1
    3 Washer, 3/8 SAE SS 2
    4 Screw, M10 x 1.5 45mm 2
  4. Set pads and counterweight aside for reuse.
  5. Grab top of tower weldment and tip unit towards weight stack side.
    Caution: Tip unit only far enough to remove hardware in following step.
  6. Remove screws, washers, and locknuts securing rear frame weldment to back support weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Back Support 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2
  7. Tip unit back down so it rests on foot pads.
  8. Remove screws, washers, and locknuts securing rear frame weldment to back support weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Back Support 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2
  9. Remove screws, washers, and locknuts securing rear frame weldment to tower weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Tower 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2
  10. Slide rear frame weldment out from under back support weldment.
  11. Discard old weldments and hardware.
  12. The unit should now look like the following image.

1.1.3 Install Components to Rear Frame

  1. Press rubber slippers and triangle warning label onto rear frame.
  2. Install end caps to rear frame using a rubber mallet.
  3. Install screws, washers, and locknuts securing bumper to rear frame using 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 3 x 6 Flange Rubber Slipper 2
    3 Cap, 2" x 3" 11-14GA, End 3
    4 Label, Warning, Triangle 2
    5 Bumper, 2-1/8 x 4-5/8 1
    6 Washer, 3/8 ID x 1.25 OD SS 4
    7 Nut, M10 Hex Nylock SS 2
    8 Screw, M10 x 1.5 110mm 2

    Tighten hardware to 8-10 ft-lb / 10.8-13.5 Nm.

1.1.4 Install Weldments

  1. Align rear frame weldment with tower weldment and back support weldment.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Tower 1
    3 Weldment, Back Support 1
  2. Install screws, washers, and locknuts securing rear frame weldment to tower weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Tower 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2

    Hand tighten hardware.

  3. Install screws, washers, and locknuts securing rear frame weldment to back support weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Back Support 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2

    Hand tighten hardware.

  4. Grab top of tower weldment and tip unit towards weight stack side.
    Caution: Tip unit only far enough to install hardware in following step.
  5. Install screws, washers, and locknuts securing rear frame weldment to back support weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Rear Frame 1
    2 Weldment, Back Support 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Nut, M10 Hex Nylock SS 2
    6 Screw, M10 x 1.5 75mm 2

    Tighten hardware to 20-25 ft-lb / 27-34 Nm.

  6. Tip unit back down so it rests on foot pads.
  7. Tighten hardware securing rear frame weldment to back support welment and tower weldment to 20-25 ft-lb / 27-34 Nm.
  8. Install end cap to cam weldment using a rubber mallet. Slide accordion sleeves and pillow blocks onto cam weldment.
    Item Description Qty.
    1 Weldment, Cam 1
    2 Cap, 2" x 3" 11-14GA, End 1
    3 Sleeve, Accordion 1.0 ID x 1 4
    4 Assembly, Pillow Block 4.88 x 2.75 3
  9. Place cam weldment shaft into slots on rear frame weldment. Install screws, washers, locknuts and pillow block securing cam weldment to rear frame weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Cam 1
    2 Weldment, Rear Frame 1
    3 Assembly, Pillow Block 4.88 x 2.75 1
    4 Washer, 3/8 SAE SS 4
    5 Nut, M10 Hex Nylock SS 4
    6 Screw, M10 x 1.5 75mm 4

    Tighten hardware to 20-25 ft-lb / 27-34 Nm.

  10. Tighten pillow block set screws to 40-50 in-lb / 4.5-5.6 Nm.
  11. Install screws and locknuts securing workarm weldment to pillow blocks on cam weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Weldment, Workarm 1
    2 Nut, M10 Hex Nylock SS 4
    3 Screw, M10 x 1.5 35mm 4

    Tighten hardware to 20-25 ft-lb / 27-34 Nm.

  12. Tighten pillow block set screws to 40-50 in-lb / 4.5-5.6 Nm.
  13. Install screws, washers, spacer washers, shafts, spacers, and locknuts securing linkage to cam weldment and workarm weldment using a 7mm Allen wrench and 17mm wrench.
    Item Description Qty.
    1 Assembly: HS-AB Linkage 1
    2 Spacer, 0.63 ID x 0.20 2
    3 Shaft, 0.625 x 0.406 x 1.200 2
    4 Nut, M10 Hex Nylock SS 2
    5 Washer, Spacer 2
    6 Washer, 3/8 SAE SS 2
    7 Screw, M10 x 1.5 50mm 2

    Tighten hardware to 20-25 ft-lb / 27-34 Nm.

  14. Install screws and washers securing counterweight to cam weldment using a 7mm Allen wrench.
    Item Description Qty.
    1 Counterweight 1
    2 Weldment, Cam 1
    3 Washer, 3/8 SAE SS 2
    4 Screw, M10 x 1.5 45mm 2

    Tighten hardware to 40-50 in-lb / 4.5-5.6 Nm.

  15. Install screws and washers securing pads to work arm using a 7mm Allen wrench.
    Item Description Qty.
    1 Pad, 8 x 6 1
    2 Pad, 18 x 10 1
    3 Washer, 3/8 SAE SS 2
    4 Washer, 3/8 ID x 1.25 OD SS 2
    5 Screw, M10 x 1.5 35mm 2
    6 Screw, M10 x 1.5 75mm 2

    Tighten hardware to 40-50 in-lb / 4.5-5.6 Nm.

  16. Route cable from weight stack to cam weldment.
  17. Install cable end into cam weldment.
    Item Description Qty.
    1 Cable End 1
    2 Weldment, Cam 1

1.1.5 Test Unit For Proper Operation