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Maintenance guide Maintenance Guide HMIS Top Drive System TON HMIS HP DOCUMENT NAME REV C CMAINTENANCE GUIDE COPYRIGHT AND DISCLAIMER Tesco Corporation ??TESCO ? has made every e ?ort to ensure that this document contains accurate and current information

Maintenance Guide HMIS Top Drive System TON HMIS HP DOCUMENT NAME REV C CMAINTENANCE GUIDE COPYRIGHT AND DISCLAIMER Tesco Corporation ??TESCO ? has made every e ?ort to ensure that this document contains accurate and current information for the TESCO top drive however the document is intended to be used in conjunction with a complete training program and on-site supervision and TESCO does not warrant or guarantee that the information contained herein is either complete or accurate in every respect and the reader hereby protects indemni ?es and holds harmless Tesco Corporation together with its directors o ?cers employees and agents from and against all liability for personal injury death or property damage to any person arising directly or indirectly from the use by the reader of the information contained in the document Tesco Corporation ? Contact Information Corporate Head O ?ce W Sam Houston Parkway No Suite Houston Texas USA www tescocorp com Telephone - Fax - REV TON HMIS HP ?TESCO CORPORATION I CREVISION INFORMATION MAINTENANCE GUIDE Revision Information Version Date Rev A June Rev B March Rev C June Rev D May Rev February Rev March Rev June Rev October Rev November Description of Changes HMI model general engineering review with updates and additions for All models updated the Service Checklist Appendix to re ect information in the Maintenance and Service Schedules chapter updated the Mudsaver Valve and Actuator Inspection chapter All models added information about how to adjust the preload when the top drive is installed in the derrick HMI model added information on how to perform three separate preload checks for the HMI top drive units separated non- destructive testing images from text to conform with Tesco technical documentation standards HMI model updated non-destructive testing and inspection schedules as per ICD HLR- Added note about checking gauges and uid levels to Maintenance and Service Schedules chapter as per ECN- - Updated version numbering from alphabetic to numeric Updated Non-Destructive Testing and Inspection Schedules chapter as per ECN - Updated Non-Destructive Testing and Inspection Shedules chapter as per ECN - added sentence about accordance with API C ISO Added caution symbols to all Warning Caution and Danger notes Added more safety warnings New revision to remove CE-ATEX standards from manual ?TESCO CORPORATION II TON HMIS HP REV CMAINTENANCE GUIDE TABLE OF CONTENTS TABLE OF CONTENTS LIST OF FIGURES VII LIST OF TABLES IX CHAPTER ABOUT THIS DOCUMENT CHAPTER MAINTENANCE AND SERVICE SCHEDULES Top Drive Service Requirements Daily Top Drive Service Requirements Swivel Lubrication Requirements Weekly Top Drive Service Swivel Inspection Requirements Monthly Periodic Top Drive Service Service Loop Service Requirements Weekly Service Loop Service Requirements Monthly Periodic Service Loop Service Requirements Torque Arrest System Service Requirements Daily Torque Arrest System Service Requirements Weekly Torque Arrest System Service Requirements Power Unit Prime Mover Service Requirements Daily Prime Mover Service Weekly Prime Mover Service Monthly Periodic Prime Mover Service Power Unit Pump Drive Service Requirements Daily Pump Drive Service Weekly Pump Drive Service Monthly Periodic Pump Drive Service