773E and 775E Off-Highway Truck Hydraulic System: Electronic Control (Body Down or Up Switch) - Adjust

View A (1) Magnet assembly (2) Body down or up switch electronic control(3) Bracket

6. Note: Before making adjustments to body down or up switch electronic control (2), the pad assembly and the shims must be installed and the dump body must be in the DOWN position. Refer to the Hydraulic System Systems Operation/Testing and Adjusting, "Pad Assembly (Dump Body) - Install and Adjust" for the proper installation of the pad assemblies.

Adjust bracket (3) in order to get the correct distance (X) between magnet assembly (1) and body down or up switch electronic control (2). Distance (X) should be 4.0 ± 1.0 mm (0.16 ± 0.04 inch).

Raise the dump body above the frame in order to get the correct height (B). The height (B) should be 360 mm (14 inch).

Use blocking to support the dump body.

Adjust body down or up switch (2) until the second light on top of the switch illuminates.Note: The second light is yellow.

Remove the blocking.

Lower the dump body onto the frame.

Pad Assembly (Dump Body) - Install and Adjust

6. Proper installation of the body support pads will effectively balance the load weight. This will reduce the risk of possible damage to the chassis. If the body support pads indicate uneven wear, readjusting the shims may correct the problem. Also, if the paint on the frame indicates uneven wear, readjusting the shims may correct the problem.

Procedure To Install Pad Assemblies To The Main Frame

View B (1) Pad assembly(2) Shim

6. Note: The truck should be on a level surface. The pivot pin for the truck body should be installed. The hoist cylinders should be installed.

Mark the location of pad assemblies (1) on the frame rail using the center mounting block on the dump body as a guide.

Raise the dump body and install the proper safety device in order to secure the dump body in the RAISE position. Stack one pad assembly (1) and one shim (2) at each location for a pad assembly (1) on the frame rail.

Remove the safety device and lower the dump body. Locate any gaps and add shims (2) in order to close the gaps.

Raise the dump body and install the proper safety device in order to secure the dump body in the RAISE position. Bolt pad assemblies (1) and the shim packs to the dump body. Remove the safety device and lower the dump body.
Procedure To Install Pad Assemblies To The Top Of The Main Crossbeam

View A-A (1) Pad assembly (2) Shim(3) Shoe

2. Note: The truck should be on a level surface. The pivot pin for the truck body should be installed. The hoist cylinders should be installed.

Place a pad assembly (1) on each shoe (3) at the front of the dump body. Install as many shims (2) as possible between pad assembly (1) and shoe (3). Remove pad assembly (1) and the shim pack. Add one shim (2) to each shim pack.

Raise the dump body and install the proper safety device in order to secure the dump body in the RAISE position. Bolt pad assemblies (1) and the shim packs to shoes (3). Remove the safety device and lower the dump body. No gaps should be visible between pad assemblies (1) and the dump body.

If you need more information, You can visit:
http://www.cat.com

773E and 775E Off-Highway Truck Hydraulic System: Electronic Control (Body Down or Up Switch) - Adjust 2013-01-10T19:22:00-08:00 Rating: 4.5 Diposkan Oleh: Unknown