Linkarm Replacement

About

This procedure provides instruction to remove and install the Moving Arms.

Specifications

System Component	Specification
Moving Arm/Link Arm Bolt	300 +/- 90 in-lbs (34 +/- 10 Nm)

Procedure

Review entire procedure before starting.

Removal Instructions

Repeat this procedure for both the right and left Moving Arm removal.

1. Disconcert the Linkarm from the Moving Arm:
   1. Remove the #2 Phillips screw and the Outer Linkarm cover. Retain part(s) and/or fastener(s) for installation.
   2. Loosen the 9/16" Linkarm hex bolt and remove the Linkarm from the Moving Arm. Retain part(s) and/or fastener(s) for installation.
   3. Remove the Inner Linkarm cover from the Moving Arm. Retain part(s) and/or fastener(s) for installation.



2. Remove the Linkarm from the Moving Stairarm:
   1. Remove the #2 Phillips screw fastener and remove the Outer Linkarm Cover. Retain part(s) and/or fastener(s) for installation.

    

   2. Remove the 9/16" hex head screw and remove the Linkarm from the Stairarm weldment - Linkarm bracket and carefully lay onto the floor.
   3. Remove the Inner Linkarm cover, and Linkarm Transition cover from the Stairarm weldment - Linkarm bracket. Retain hardware and fastener for installation.
3. Loosen the top half of the side cover from the front tower weldment:
   1. Remove the front upper corner and the middle front #3 Phillips side cover weldment screws.
   2. Then remove the two #2 Phillips screws and the Upper Pivot Anchor bracket.



4. Remove the Moving Arm:
   1. Loosen, but do not remove, the 3/16" hex key pivot shaft outer set screw.
   2. Then remove the 3/16" hex key pivot shaft inner set screw and gently pull the Moving Arm outward and over the side cover to remove. Retain part(s) and/or fastener(s) for installation.

Installation Instructions

1. Reinstall the Moving Arm pivot shaft into the weldment moving arm pivot mount bar.



2. Then reinstall the 3/16" hex key pivot shaft inner set screw.
3. If the 3/16" hex key pivot shaft outer set screw was removed, reinstall the outer set screw.
4. Tighten both the inner and outer set screws and torque to 300 in-lbs (34 Nm).
5. Reinstall the upper corner and middle front #3 Phillips side cover weldment screws, torque to 30 +/- 9 in-lbs (3.4 +/- 1 Nm).



6. Reinstall the Upper Pivot Anchor bracket and secure using the two #2 Phillips screws, torque to 30 +/- 9 in-lbs (3.4 +/- 1 Nm).
7. Reattach the Linkarm to the Moving Arm:
   1. Reinstall the Inner Linkarm cover onto the Moving Arm - Linkarm mount.
   2. Then attach the Linkarm to the Moving Arm and secure using the 9/16" bolt, torque to 300 +/- 90 in-lbs (34 +/- 10 Nm).
   3. Reinstall the Outer Linkarm cover and secure using the #2 Phillips screw.



8. Reinstall the Lift Rear cover (see Covers and Panels Replacement), Accessory Tray (see Accessory Tray Cover Replacement), and Lift Front Cover (see Front Lift Cover Replacement).
9. Verify machine operation and return to service, see Standard Service Menus.