SET-BELT(FAN) 3550152 - Caterpillar

This safety alert symbol means:Pay attention!Become alert!Your safety is involved.The message that appears under the safety alert symbol explains the hazard. Operations that may cause product damage are identified by "" labels on the product and in this publication.Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. You must determine that the tools, procedures, work methods, and operating techniques are safe. You must determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, you must determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.Summary
This guideline provides proper handling procedures for new crankshaft seals. Proper use of this guideline will prevent leaks and failures due to contamination and improper handling.Best Practices
Background
To reduce the risk of leaks and failures, it is important that crankshaft seals are properly installed. Proper operation of a crankshaft seal is dependent on many factors such as:
Cleanliness of the seal, tooling, and all other mating components.
Appropriate protection and handling of the crankshaft seal.Mating Component Storage
Crankshafts and housings should be stored in a manner that will reduce contamination and damage to the sealing surfaces. Storage should also conform to the Cat dealer Contamination Control Compliance Guide (PEBJ0002).Mating Component and Tooling Cleanliness
The housings, crankshafts, and all installation-related items must be free of all contamination. The housing bores and crankshafts must be free of scratches, nicks, dents, or any other feature that will compromise sealing.Each housing bore and shaft should be wiped clean with a lint-free wipe before installation.Inventory of subassembled crankshaft seals should be minimized to reduce risk of contamination and damage.Handling of Crankshaft Seals
Some crankshaft seals arrive with a supplier-applied sealant around the outer diameter of the seal case and/or the inner diameter of the wear sleeve. This coating will typically be red, blue, or green depending on the supplier and seal location. This coating is critical for sealing against the bore and shaft, and must not be scratched or removed from the seal.
Illustration 3 g02860196
Proper crankshaft seal handling.To avoid contamination, seals should be handled only by touching uncoated metal surfaces whenever possible. To reduce the risk of damage, never touch the seal on the sealing surface. If necessary, seals may be carefully handled on coated metal surfaces. Ensure that the coating does not get scratched nor contaminated.
Illustration 4 g02860461
(1) Wear sleeve (2) Sealing lipSome seals are supplied with a plastic sleeve around the interior diameter. The sleeve holds the PTFE (Polytetrafluoroethylene) sealing lips in place and the sleeve