Stryker Medical 1020, Maintenance Manual

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Service Information
6
PNEUMATIC FOWLER ADJUSTMENT
Required Tools:
3/32 Hex Allen Wrench 5/8 Open End Wrench
1/8 Hex Allen Wrench Channel Lock Pliers
3/16 Hex Allen Wrench Towel or Cloth
7/16 Open End Wrench Thread ”Locktite”
Adjustment Procedure:
1. Refer to drawing 1020–31–10 (Pneumatic Fowler Assembly, page 57).
2. For easier access, move Fowler to 75 degrees or higher.
3. Using a 3/32 hex Allen wrench, remove set screws (R), located in center of yokes (E).
4. Wrap a towel or cloth around the gas cylinder actuator shaft(s) so as not to mark the shaft. Using channel
lock pliers, turn actuator shaft(s) into yoke(s) (E) until tight.
5. Using thread locktite, reinstall set screws (R).
6. While holding the jam nut spacers (H) with a 5/8 open end wrench, turn the adjustment screws (J) using
a 3/16 hex Allen wrench until they JUST touch the cylinder pins.
7. Bring the Fowler fully down, and with the handle fully released, using a 1/8 hex Allen wrench, tighten the
bottom set screws (P) so the handle is lifted 1/8–1/4 inch above the spine tube. Both set screws must
touch the handle. Using a 7/16 open end wrench, tighten the jam nuts (O) on these set screws.
8. Be sure the Fowler will travel from flat to at least 90 degrees. If it doesn’t, turn each adjustment screw (J)
clockwise 1/2 turn. Repeat until at least 90 degrees of travel is achieved.
9. Lower the Fowler to a 5–10 degree angle and release the handle. Apply approximately 50 pounds down-
ward to the end of the Fowler. If either side drifts down, turn the adjustment screw (J) on that side 1/4
turn counterclockwise. Repeat until the Fowler is firm with 50 pounds applied.
10. While holding the adjustment screws (J), tighten the jam nut spacers (H).
TRANSFER BOARD COUNTERBALANCE ADJUSTMENT
Required Tools:
7/16 Open End Wrench
Adjustment Procedure:
1. Raise the transfer board to the full up position.
2. Unhook the extension spring at the eye bolt.
3. Using a 7/16 open end wrench, loosen the jam nut at the eye bolt.
4. Adjust the eye bolt to the desired position.
5. Tighten the jam nut.
6. Hook the extension spring to the eye bolt.
7. Allow the transfer board to lower on its own.
8. Repeat steps 1–7 until the desired counterbalance is achieved.