GUARD AS-CLUTCH 1539156 - Caterpillar

(S/N: RHL1-UP; KES1-UP)312D2 (S/N: KLE1-UP)Reference: Special Instruction, SEHS0086, "Installation Procedure for an Additional 449-7135 Load Control Valve Gp on Certain 312D Excavators".The Special Instruction contains a procedure for improving stick cylinder drift in applications where heavy attachments are used and stick cylinder drift is deemed to be excessive. The procedure includes the addition of an additional 449-7135 Load Control Valve Gp. Reference 312D and 313D Excavators Hydraulic System , KENR6555, "Testing and Adjusting", "Cylinder Drift - Check - Empty Bucket" for stick cylinder drift specifications.For the complete list of parts and procedure to install an additional 449-7135 Load Control Valve Gp, refer to Special Instruction, SEHS0086.The special instruction can be found on the Caterpillar service information system (SIS) and through the normal literature distribution system at your local Cat dealer.