PISTON 1212083 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 5P-0960 Molybdenum Grease
B 1U-6396 O-Ring Assembly Compound Note: Make sure that the pin bores in the stick and in the boom are thoroughly clean and free of dirt and debris prior to the installation of the stick on the boom.
Put a thin coat of Tooling (A) on the sleeve bearings. Put a thin coat of Tooling (A) on the lips of lip type seals.
Illustration 1 g00687835
Start the machine. Raise the boom. Swing the boom over the stick. Align the pin bores for the boom to stick pin.
Install a shim (7) on each side of the boom between the boom and the stick at the pin bore. Shim (7) is identified by the tab on the shim.
Temporarily install pin assembly (5).
Illustration 2 g00687906
(B) Boom
(S) Stick
Measure the total clearance between the stick and the boom at the pin bore. The total clearance is Dimension (X) plus Dimension (Y). The total clearance must not be more than 0.8 mm (0.03 inch). If the total clearance is less than 0.8 mm (0.03 inch), the addition of shims will not be necessary. If the total clearance is more than 0.8 mm (0.03 inch), the addition of shims will be required.
If shims are required, remove pin assembly (5). Install the required amount of shims (8) and (9) between the stick and the boom on the side opposite retaining bolt (4). Locate shims (8) and (9) between the boom and shim (7). Install pin assembly (5).
Install bolt (4).
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.
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Illustration 3 g00687835Note: O-ring seals, gaskets and seals should always be replaced. A used O-ring seal may not have the same sealing properties as a new O-ring seal. A reconditioning procedure should not be degraded because of a low cost component such as an O-ring seal or a gasket. Use Tooling (B) during the assembly procedure.
Install new O-ring seals in the ends of all hose assemblies. Connect hose assemblies (6).
Illustration 4 g00687890
Fasten a lifting sling to the rod end of stick cylinder (1). Extend stick cylinder (1) until the pin bore lines