ENGINE AR 1527468 - Caterpillar

IMPORTANT: Because of the design of the seal lip in this new seal group, special handling and installation procedures that follow are necessary, to help prevent additional failures.1. USE THE PROPER TOOLS FOR SEAL INSTALLATION IMPORTANT Seals are supplied mounted on two different types of sleeves. NYLON (usually red or clear) sleeves have seals that use the pulley, harmonic balancer, or crankshaft as the sealing surface. The NYLON sleeve must remain inside the seal during the installation process. The NYLON sleeve needs to be removed before installing the pulley, or harmonic balancer. STEEL wear sleeves are not to be separated from the seal. The STEEL wear sleeve seals only on the crankshaft. The NYLON installaiton sleeves are used to guide the seal onto the crankshaft during installation. The NYLON sleeve and seal should only be separated after the installation of the seal. The STEEL wear sleeve should never be separated from the seal. STEEL WEAR SLEEVE2. SEPARATION OF THE STEEL WEAR SLEEVE AND THE SEAL WILL DAMAGE THE SEAL. THE SEAL MUST BE DISCARED AND REPLACED WITH A NEW SEAL IF SEPARATION OCCURS. THE SEAL MUST ALSO NOT BE USED IF THE WEAR SLEEVE IS REMOVED. NYLON INSTALLATION SLEEVE3. SEPARATION OF THE NYLON SLEEVE AND THE SEAL PRIOR TO INSTALLATION WILL DAMAGE THE SEAL. THE SEAL MUST BE DISCARED AND REPLACED WITH A NEW SEAL.4. NYLON SLEEVES MUST BE REMOVED BEFORE THE ENGINE IS RUN.5. USED SEAL GROUPS ARE NOT TO BE REUSED.6. SEALS GROUPS ARE TO BE INSTALLED DRY (NO LUBRICATION).When installing the seal in a D334, D336, D342, 1674 or 1676 Engine refer to from SMHS6959 for the proper installation procedure. For all other applications, refer to Special Instruction Form SMHS8508 as well as refer to the proper Disassembly and Assembly manual for your application.