SWITCH AS-PUSH BUTTON 4416544 - Caterpillar

Introduction
When replacing the 8N2501 Governor Housing Assembly in the 3300 Family Of Engines with Scroll Fuel Systems, it is possible to have an interference between components within the governor or the rack may not move all the way to the "Fuel Off" position. These conditions may exist because of casting shifts during the manufacturing process of the governor housing.To ensure that the governor will function properly, it is necessary to check the assembled dimension for rack lever travel and possibly replace the original 8N3087 Stop and 2W9305 Plate. Follow the procedure in this instruction to perform this check.Reference: Service Manual, Parts Book.Recommended Additional Parts
Installation
1. Assemble the components of the governor group using a new 8N2501 Governor Housing Assembly and the original 8N3087 Stop and 2W9305 Plate. Refer to the Service Manual for the assembly procedure.
Dimension (A).2. Measure the distance between the face of the governor housing assembly and the rack lever dimension (A). This dimension should be 18.6 1.0 mm (0.73 .04 in).3. If dimension (A) is within the specified limit of 17.6 to 19.6 mm (0.69 to 0.77 in), install the governor assembly.* If dimension (A) measured in Step 2, is greater than 19.6 mm (0.77 in), proceed to Step 4.* If dimension (A) measured in Step 2, is less than 17.6 mm (0.69 in), proceed to Step 5.
(1) 8N3087 Stop. (2) 2W9305 Plate. (3) Grind location.4. Remove 2W9305 Plate (2) and grind some material from the plate at area (3) shown shaded in above illustration. Re-install plate (2) and check for correct dimension (A).Install the governor assembly when the correct dimension (A) has been achieved.5. Remove the original 8N3087 Stop (1) and 2W9305 Plate (2), and replace with new parts.Check dimension (A) per Step 2 above. Install the governor assembly when the correct dimension (A) has been achieved.