POST AS 1244237 - Caterpillar

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     FT-1451     Retraction Bolt     1    
1A-7774 Washer     1    
B     1U-9200     Lever Puller Hoist     1    
ZZ     9U-7079     Tapered Cap/Plug     2    
9U-7075 Tapered Cap/Plug     2    Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
Pressurized air can cause personal injury. The air supply lines are pressurized to 830 kPa (120 psi).Purge the air from the system before performing any maintenance to the air system.
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Note: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
Park the machine on a hard, level surface. Lower the scraper bowl to the ground and chock the wheels.
Start the engine in order to build air pressure in the brake system. Stop the engine. Turn the engine start switch key to the ON position. Release the parking brake.
Illustration 1 g01083939
left side of machine
Loosen bolt (1) (not shown). Remove bolts (3). Disconnect tube assembly (2) .
Illustration 2 g01081664
Remove cover (4) and plug (5) (not shown) from brake actuator (6) .
Illustration 3 g01081680
Install Tooling (A) to brake actuator (6) .Note: Repeat Steps 4 and 5 for the brake actuator on the other side of the machine.
Apply the parking brake.
Turn the engine start switch key to the OFF position.
Illustration 4 g01081660
Open air tank drain valves (7) in order to purge the air from the system.
Illustration 5 g01083946
Disconnect hose assemblies (8) from brake actuator (6) .
Illustration 6 g01081682
Install Tooling (B) and a suitable lifting device to bracket assembly (9). Remove bolts (10) .
Illustration 7 g01081708
Remove cotter (11) (not shown). Remove pin (12). Remove bolts (13). Remove the brake actuator (6) and bracket assembly (9). The weight of brake actuator (6) and bracket assembly (9) is approximately 66 kg (145 lb).
Illustration 8 g01081719
Remove nuts (14). Remove brake actuator (6) from bracket assembly (9) .Note: Repeat Steps 9 through 12 for the brake actuator on the other side of the machine.