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TUBE AS 4646853 - Caterpillar

4646853 TUBE AS Caterpillar parts TUBE
Alternative (cross code) number:
Caterpillar 4646853 TUBE AS

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Number on catalog scheme: 28
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Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
B 8H-8581 Feeler Gauge 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01422812
Install plug (10) in both ends of rocker shaft (11). Install the plug to a depth of 12.7 1.0 mm (0.50 0.04 inch) from the end of the shaft.
Illustration 2 g01422810
Install screw (9) and nut (8) on each of rocker arms (4).
Illustration 3 g01422808
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Put the retainer, the original washer, and rocker arm (4) in position on one end of the rocker shaft. Put bracket assembly (5) in position on the shaft so the dowel hole in bracket assembly (5) is in alignment with the hole in the shaft.
Install dowel (1) that holds bracket assembly (5) in place.
Install the remainder of rocker arms (4), springs (7), and brackets (6). Push rocker arm (4) to the left of the hole on the shaft. Install the other bracket assembly (5). Ensure that the dowel hole in bracket assembly (5) is in alignment with the hole on the shaft.
Install dowel (1) through bracket assembly (5) and into the hole in the shaft.
Illustration 4 g00789045
The dowel (11) must be installed so that Dimension (X) is 12.7 1.0 mm (0.50 0.04 inch).
Illustration 5 g00788907
Install the last rocker arm (4), original washer (2), retainer (3), and dowel (1).
Illustration 6 g01422841
Use Tooling (B) to check the clearance between the rocker arm and the washers. Add or subtract washers until the clearance is 0.30 to 1.40 mm (0.012 to 0.055 inch). Check the clearance at the other end of the rocker arm assembly. End By:
Install the rocker shaft and the pushrod. Refer to Disassembly and Assembly, "Rocker Shaft and Push Rod - Install".

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