GASKET 3S1811 - Caterpillar

Illustration 1 g00687600
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
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 attachments have been lowered, 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.
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.
Introduction
Effective fluid cleanliness management is the single most important factor and single greatest opportunity in maximizing component life, increasing reliability and durability, and lowering component life cycle costs. Scheduled Oil Sampling (SOS) Services is a highly recommended process for Caterpillar customers to use to minimize owning and operating costs. Customers provide oil samples, coolant samples, and other vehicle information. The dealer uses the data to provide the customer with recommendations for management of the equipment. SOS Services can help detect a potential problem before a failure and help determine the cause. Your Caterpillar dealer may administer an Extended Oil Drain program with a Customer Support Agreement (CSA) based on routine Scheduled Oil Sampling (SOS) results and the use of genuine Cat parts, filters, fluids, and Scheduled Maintenance Services.
Illustration 2 g06179225
Typical example of a CX38–P892 Petroleum Transmission (shown without integral pump drives)
(1) Filter inlet pressure coupler (S O S port)There are filter inlet and filter outlet pressure taps on the transmission filter base. Refer to Illustration 2. The inlet pressure tap is also a dual purpose scheduled oil sampling (SOS) port (designated by a purple dust cap). Use this port when sampling oil for SOS purposes. To prevent damage to the seal in the port and a subsequent leak, use 169-8373 Fluid Sampling Bottle when using the fluid sampling port.The following tests are used to obtain a scheduled oil sample of the hydraulic system by use of the scheduled oil sampling port that is located on the filter base.Note: If insufficient oil pressure is measured anywhere in the transmission hydraulic control system, test the filter inlet pressure on the oil filter base. The oil filter base can be found in the back left-hand side of the transmission.Required Tools
Table 1
Required Tools
Tooling Item Part
Number Description Qty
A A1