PIPE 4N6230 - Caterpillar

Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Personal injury or death can result from improper lifting or blocking.When a hoist or jack is used to lift any part or component, stand clear of the area. Be sure the hoist or jack has the correct capacity to lift a component. Install blocks or stands before performance of any work under a heavy component.Approximate weights of the components are shown. Clean all surfaces where parts are to be installed.
Park the machine on a level surface. Partially extend the ejector cylinder. Install the steering frame locks. Refer to Operation and Maintenance Manual, "Steering Frame Lock".
Lower the tailgate. Refer to Operation and Maintenance Manual, "Lowering the Tailgate with Engine Stopped".
Illustration 1 g01191962
Start the engine. Extend the ejector cylinder until the ejector blade is halfway up the ejector body. Allow sufficient space for the placement of Tooling (A). Refer to Step 8. Stop the engine and turn the disconnect switch to the OFF position.
Illustration 2 g01191971
Loosen nuts (2) on both sides of the ejector blade. Turn bolts (1) on both sides of the ejector blade in order to raise the floor rollers off the floor of the truck body. Note: Raising the floor rollers prevents movement of the ejector blade during the removal and installation of the ejector cylinder.
Illustration 3 g01191975
Disconnect hose assemblies (3). Remove bolts (4). Remove covers (5) from both sides of the ejector blade.
Illustration 4 g01191978
Attach a suitable lifting device to ejector cylinder (6).
Remove bolts (7) and bearing caps (8) that retain ejector cylinder (6) to gimbal assembly (9).
Illustration 5 g01191988
Use a suitable lifting device in order to support ejector cylinder (6). Start the engine and slowly retract ejector cylinder (6). When the ejector cylinder is fully retracted, install Tooling (A). The weight of ejector cylinder (6) is approximately 318 kg (701 lb).
Illustration 6 g01193575
Install Tooling (B), Tooling (C) and a suitable lifting device onto carriage (10).
Illustration 7 g01193635
Raise ejector blade (11) until the floor rollers at the front of the ejector blade are approximately 20.0 mm (0.78 inch) clear of the ejector body. It may be necessary to adjust the rollers (pitch) in order to achieve the correct clearance. Refer to Operation and Maintenance Manual, "Ejector Blade Alignment - Check/Adjust". The weight of ejector blade (11) is approximately 1738 kg (3832 lb).
Adjust Tooling (C) in order to raise the rear of the carriage.
Illustration 8 g01193636
Remove bolts (12) and plates (13) from both sides of the ejector body.
Illustration 9 g01193632
Remove ejector blade (11) from the machine. The weight of ejector blade (11) is approximately 1738 kg (3832 lb).
Illustration 10 g01193627
Lower ejector blade (11) onto Tooling (D).