Usage:
RR-250 (6ED) Road Reclaimer, SS-250 (6DD) Soil Stabilizer
Description of Change: New parts are added to the speed sensor group to act as an encoder gear mesh adjuster. The new parts are used to prevent gear teeth from operating in the tooth root. The adjuster operation improves the service life of the encoder gear.
Adaptable To: The new gear mesh adjuster parts that are shown in the chart are effective with RR-250 (6ED364-Up) Road Reclaimers and SS-250 (6DD324-Up) Soil Stabilizers. The gear mesh adjuster parts are adaptable to RR-250 (6ED216-363) Road Reclaimers and SS-250 (6DD222-323) Soil Stabilizers.
Illustration 1. Locations for the new gear mesh adjuster parts (see chart for identification). (6) 1G-5426 Guard Assembly.
Parts Required
Procedure To Install Adjuster
1. Remove guard assembly (6) and drill two holes as shown in Illustration 2.
Illustration 2. Modify guard assembly (6). (B) 9.5 mm (.37 in) Diameter holes, two places. (C) 40.0 ± 2.0 mm (1.57 ± .08 in). (D) 50.0 ± 2.0 mm (1.97 ± .08 in).
2. Install stop assembly (3) as shown in Illustration 1.
3. Install modified guard assembly (6).
Illustration 3. Detail (A) of gear engagement. (E) Gear engagement 1.0 mm (.04 in).
4. Adjust bolt (5) until stop assembly (3) touches the encoder bracket. Continue to adjust the bolt until the gear engagement is 1.0 mm (.04 in) from maximum (Illustration 3).
5. Lock the bolt in place with nut (4).