COVER-ADVANCE 1W3861 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 250-6166 Tool Gp 1 Start By:
Install the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Remove and Install".
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "System Pressure - Release". Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be cleaned thoroughly to prevent dirt from entering the internal mechanism.Note: Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses, and all tubes to prevent fluid loss and keep contaminants from entering the system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Drain the hydraulic tank into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the capacity of the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the proper draining procedure.
Illustration 1 g01096430
View of the main control valve from the articulated hitch area
Disconnect hose assemblies (1) and (2).
Illustration 2 g01096431
Disconnect hose assembly (4).
Remove tube assembly (3).
Illustration 3 g01096432
Disconnect hose assemblies (5) and (6).
Illustration 4 g01096433
Disconnect hose assembly (7).
Remove tube assembly (8).
Illustration 5 g01096446
Disconnect hose assemblies (9), (10), (11), (12), (13) and (14).
Illustration 6 g01099003
Install Tooling (A) and a suitable lifting device to main control valve (16). The weight of main control valve (16) is approximately 65 kg (145 lb).
Remove three bolts (15) and main control valve (16).