MANIFOLD GP-CONTROL 3082156 - Caterpillar

Table 1
Required Tools
Tooling Item Part
Number Description Qty
A A1 169-8373 Fluid Sampling Bottle 1 If the oil becomes contaminated, premature component failure could result. Contaminated oil can also contribute to overheating.A scheduled oil sample can be taken from the oil bypass valve which is located at callout (1) or from the manifold of the oil cooler which is located at callout (4). The pressure of the oil at callout (1) is the same pressure that is coming out of the transmission pump. This oil is going to the transmission oil filter. The pressure of the oil at callout (4) is the same pressure as the oil that is exiting out of the torque converter and going to the transmission oil cooler. To take a scheduled oil sample, use the required tools and testing procedures that are described below.Note: If insufficient oil pressure is measured anywhere in the transmission hydraulic control system, test the pressure of the oil at the oil filter bypass valve. The pressure that is measured at the oil bypass valve will be the same pressure that is measured at the transmission hydraulic control relief valve.
Illustration 1 g01331818
Illustration 2 g01654816Use the following procedure to determine the contamination of the oil in the hydraulic system.
Start the engine. Warm up the oil until the oil reaches 47 °C (116 °F).
Ensure that the transmission control is in the NEUTRAL position and place the throttle in the LOW IDLE position.
Remove cap (2). Obtain an oil sample from scheduled oil sampling tap (3) by use of tooling (A).
Stop the engine.
Check the hydraulic filter element for foreign materials.
Replace the hydraulic filter element.
Bronze colored particles give an indication of sleeve bearing failure.
Shiny steel particles give an indication of bearing or gear failure.
Rubber particles indicate a seal failure or a hose failure.
Aluminum particles indicate a failure of the torque converter impeller.
Plastic particles give an indication of thrust washer or rotating seal failure.Note: If any of these particles are found in the hydraulic filter element, all components of the hydraulic oil system must be cleaned. Do not use any damaged parts. Any damaged parts must be removed, and new parts must be installed.Refer to Caterpillar Operation and maintenance Manual, SEBU6250, "Machine Fluids Recommendations" for more information about obtaining a proper scheduled oil sampling, scheduled oil sampling Oil Analysis guidelines, oil sampling intervals, contamination control, and component life cycle management. Refer to Special Publication, PEHP6001, "How To Take A Good Oil Sample" for more information about obtaining a sample of oil.