User's Manual

Date of Origin – 02/01/08

• Use the trap door operator shaft to close the trap door.

• Locate a torque wrench onto the hex drive nut on the operator shaft.

• Rotate the wrench to close the trap door until the door is completely closed (decals).

• Locate the pawl lock to a position approximately 1/2 tooth away from the next gear ratchet

wheel locking position (pictured).

TRAP DOOR LATCH (PAWL) - Setup and Adjustment

• Rotate the torque wrench in the ‘close’ direction, torque wrench set point at 80 ft-lbs

(max), until pawl drops into gear ratchet wheel tooth to lock door closed. Pawl lock must be

set to drop into the gear ratchet wheel lock at a torque < or = 80 ft-lbs latching torque.

• Adjust pawl position side to side to fine-tune pawl latching torque set point.

• Release the door lock by rotating the operator shaft toward the ‘close’ direction, easing the

locking pressure on the pawl. Raise the pawl lock out of the ratchet wheel tooth and rotate the

pawl in the opposite direction. Open the trap door by rotating the operator shaft, with the crank

arm, opposite the ‘close’ direction (decals). Unlatching torque should not exceed 80 ft-lbs

torque.