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Instruction ER8485 6/9684/85/86 Series2The following Instructions should be thoroughly reviewed and understood prior to installing,operating or performing maintenance on this equipment. Throughout the text, safety and/orcaution notes will appear and must be strictly adhered to, otherwise, serious injury orequipment malfunction could result.84Air to Extend(Direct)85Air to Retract(Reverse)86Double Acting Cylinder (No Springs)Actuator Type1. IntroductionThe following instructions are designed to assist maintenancepersonnel in performing most of the maintenance required onModels 84, 85 & 86 cylinder actuators. Masoneilan has highlyskilled service engineers available for start-up, maintenance andrepair of our actuators and component parts. In addition, a regu-larly scheduled training program is conducted at the TrainingCenter to train customer service and instrumentation personnelin the operation, maintenance and application of our control valvesand instruments. Arrangements for these services can be madethrough your Masoneilan Representative or Sales Office. Whenperforming maintenance, use only Masoneilan replacement parts.Parts are obtainable through your local Masoneilan Representa-tive or Sales Office. When ordering parts, always include Modeland Serial Number of the unit being repaired.2. GeneralThe following is a step by step procedure for the assemblyand disassembly of the Models 84, 85 and 86 cylinder actuators.Hydraulic manual override instructions are included on page 7.The intent of this procedure is to provide all the specializeddata necessary to properly assemble, disassemble and testthese actuators.These instructions are written for use by a qualified person. There-fore, proper use of lifting and fixturing devices are assumed to b...