Caster Wheel Yoke Assembly Remove and Install

1. Park machine safely. (See Parking Safely in the Safety section.)

2. CAUTION: The machine can fall or slip from an unsafe lifting device or supports.

   • Use a safe lifting device rated for the load to be lifted.
   • Lower machine onto jack stands or other stable supports and block wheels before servicing.
   
   

   Raise and securely support the front of the machine.

3. NOTE: During removal, mark the top of the concave washer (C) with a permanent marker to be sure of direction for installation.

   
   TCAL43704-UN-26MAR13

   Remove cap (A), lock nut (B), concave washer (C), flat washer (D), and wheel assembly (I) from caster yoke (F).

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4. NOTE: It is not necessary to remove the bearing races for bearings (E and G), unless the bearings need to be replaced.

   Remove seal (H) and lower bearing (G).

5. Remove upper bearing (E).

6. Clean and inspect bearings; pack with clean grease. Replace bearings if needed.

Installation

1. Install lower bearing (G) and a new seal (H).

2. Install upper bearing (E).

3. Install caster yoke and wheel assembly (I), washers (C), and (D), and lock nut (B).

4. NOTE: Do not overtighten lock nut (B). The caster wheel yoke assembly must be free to rotate.

   Tighten lock nut to specification. Install cap (A).

   Item	Measurement	Specification
   Caster Yoke Lock Nut	Torque	51.5 N•m (38 lb.-ft.)

5. Apply grease to lubrication fitting (J).