SEAL AS 3W1848 - Caterpillar

General Instructions
The following instructions will prove helpful to disassemble and assemble machine components. The information should be read and then referred to as necessary.Safety
The safety symbols in the manual indicate an item or procedure where the use of caution and safety is necessary. ALWAYS heed these symbols.Your safety and that of others is always the number one consideration when working around machines. Safety is a matter of thoroughly understanding the job to be done and the application of good common sense; not just a matter of "do's" and don'ts."Cleanliness
Clean the connection and the adjacent area before disconnecting hydraulic, fuel or air lines. As soon as the disconnection is made, cap, plug or tape the line or opening to prevent entry of foreign material. The same recommendations for cleaning and covering apply when access covers or inspection plates are removed.Clean and inspect all parts. Be sure all passages and holes are open. Cover all parts to keep them clean. Be sure parts are clean when installed. Leave new parts in their containers until ready for assembly.Removal And Installation
Unless otherwise specified, all removals should be accomplished using an adjustable lifting beam. All supporting members (chains and cables) should be parallel to each other and as near perpendicular as possible to the top of the object being lifted. When it is necessary to remove a component on an angle, remember that the capacity of an eyebolt diminishes as the angle between the supporting members and the object becomes less than 90°. Eyebolts and brackets should never be bent and should only have stress in tension. A length of pipe and a washer can be used, as shown, to help relieve these stresses on eyebolts.Forged eyebolts are available. Each size eyebolt has a maximum load recommendation. Some removals require the use of lifting fixtures to obtain proper balance and to provide safe handling.If a part resists removal, check to be certain all nuts and bolts have been removed and that an adjacent part is not interfering.Cleaning And Handling Of Parts
Use caution during removal and installation of parts to prevent damage when handling. Many parts may be used again if not damaged by removal methods. Never discard an expensive part without first cleaning it to see if it can be used again.Parts that are to be reused should be protected with a coating of oil or corrosion preventive material until they are installed. Do not store parts outside unless they have corrosion protection and they are covered.Before installation of new or reusable parts, clean the corrosion preventive material from the machined surfaces. Use a cleaning solvent that will not destroy the material being cleaned (an example is aluminum).Inspect the parts for damage caused by handling. Many nicks and burrs can be removed with crocus cloth or a fine grain polishing stone.See the correct Service Manual or Guideline for Reusable Parts for more information.Disassembly And Assembly
When assembling a machine, complete each step in turn. Do not partially assemble one part and start assembling some