VALVE AS 2172811 - Caterpillar

Installation Procedure
Note: Cleanliness is an important factor. Before the assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
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.
Illustration 1 g00616418
Typical Example
Inspect all of the O-ring seals for damage or wear. If any of the seals are damaged use new parts for replacement.
Position stick lowering control valve (3) on the stick cylinder and install bolts (4).
Install hose assembly (2) and hose assembly (6).
Install hose assembly (1) and hose assembly (5).
Fill the hydraulic oil tank with oil to the correct level. Reference: Operation and Maintenance Manual, SEBU6941, "Lubricant Viscosities and Refill Capacities".