AXLE AS-FRONT 2G8606 - Caterpillar

Illustration 4 g03693343
Install O-ring seal (21) to piston housing (13).
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Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install spring guides (15) and springs (16) to piston housing (13).
Use Tooling (A) and a suitable press in order to compress springs (16).
Install retaining pins (14) (not shown) into spring guides (15). Note: Steps 9 through 12 are for the installation of the service brake wear indicator.Note: The service brake wear indicator must be installed into the correct location of the brake piston. If the service brake wear indicator was removed, use Steps 9 through 12 in order to install the service brake wear indicator correctly .
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Hollow dowel locations. The current view shows the hollow dowel in the "RF/LR" location.
Locate the correct position in order to install the service brake wear indicator. The piston housing has identification marks that indicate the placement of the wear indicator pin. The indication marks are "RF/LR" and "LF/RR". Install the indicator pin in the appropriate location. "RF/LR" - The identification mark on the piston housing for the installation in the right front service brake or installation in the left rear service brake."LF/RR" - The identification mark on the piston housing for the installation in the left front service brake or installation in the right rear service brake.
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Back Face of Piston
(17) Retaining Ring
(18) Hard Washer
(19) Wear Indicator Pin
(27) Identification Mark
Place hard washer (18) on the head of wear indicator pin (19). Install retaining ring (17) in order to hold wear indicator pin (19) and hard washer (18) to the piston.
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End view of the piston housing portion of the service brake.
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Service Brake Wear Indicator
(13) Piston Housing
(19) Wear Indicator Pin
(20) Hollow Dowel
(22) Piston
(B) Visible Length of the Wear Indicator Pin
Apply Tooling (B) to the threads of hollow dowel (20).
Thread hollow dowel (20) into piston housing (13) until Dimension (B) is equal to 7.25 0.25 mm (0.285 0.010 inch). The amount of wear indicator pin (19) that is exposed is critical to determine when the brake disc life has been exceeded. Note: Piston (22) must be fully retracted into piston housing (13) in order to set the correct hollow dowel (20) length.
Illustration 12 g03692297
Apply the lubricant that is being sealed to friction discs (11), (9), and (7).
Install outer plate (12), friction disc (11), outer plate (10), friction disc (9), outer plate (8), friction disc (7), and outer plate (6) to spindle assembly (1).
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Install damper plate (5). Note: Note the orientation on damper plate (5).
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Install hub (4) into spindle assembly (1).
Install retaining ring (3).
Install O-ring seal (2). End By:
Install the final drive, the wheel, and the service brake piston housing.