Ariens Snow Blower 920 User's Manual
Contents
1. crush washer engagement area does not meet surface finish drawing specification of 6 3um Short Term Corrective Action LCT recommends increasing drain bolt torque to 23lb ft to allow crush washer to fill excessive ridges valleys caused by the out of specification surface finish 20 17 M10X1 25 M10X1 25 j C1 0 IR ARL Spe ee ke e Capability study was conducted on 30pc of Oil Drain Tubes removed from inventory product e Engines were filled with oil and monitored over a 24hr period e 5pcs of the 30 were observed to have an oil witness mark below oil drain bolt 35mm drain tube side e Oil Drain Tubes were removed from engines and service Oil Drain Tubes with correct surface fin ish installed and torqued and engines were placed back into inventory e Removed Oil Drain Plugs were then torqued to 23lb ft and pressurized in a submerged state to look for joint seal failure No failures were observed after torque was increased to 23lb ft 30pc Oil Drain Tube Samples Samples were torqued to 231b ft Samples were pressurized and sub merged No leaks were detected Long Term Corrective Action e Currently working with supplier to determine root cause of oil drain tube missing the facing operation e Will update with full 8D report once final root cause has been determined Containment Activities e Inventory audits were conducted with product in South Carolina war2. Date September 29 2011 No B 2079 Service Bulletin Ariens Company 655 W Ryan St Brillion WI 54110 www ariens com Product Family 920 Series Sno Tek Snow Throwers Subject LCT Engine Oil Drain Tube Seepage Dealer Action Inspect and Correct as Necessary Ariens Company has been notified by LCT Engines Liquid Combustion Technology that there is a poten tial for oil seepage from the oil drain tube on some engines used on Ariens Sno Tek snow throwers LCT has released the following Technical Service Bulletin which identifies the issue and explains steps to take if a machine displays this defect Please read the attached bulletin and inspect and repair all Sno Tek models in your inventory per the instructions in the bulletin If you need to contact LCT USA customer service please have the Ariens model and serial numbers and LCT engine model and serial numbers available Dealers can contact LCT USA customer service at 800 552 8094 for information on any warranty claims Page 1 of 1 LGI LIQUID COMBUSTION TECHNOLOGY GLOBAL BY DESIGN i 100 Roe Road Phone 864 660 8036 Ligu id Com bu ST zon Travelers Rest SC 29690 Fax 864 834 6670 Technology E mail dougglass lctllc com Oil Drain Tube Oil Seepage 9 28 2011 PROBLEM DEFINITION Oil Seepage from 35mm Drain Tube Reported by customer After internal inventory audit seepage was con firmed Further Investigative Analysis determined 35mm Oil Tube Face
3. ehouse e Product with May 25th date code gt 15000 engine serial number was discovered to have the non faced machining condition e Product from August 6th lt 8000 engine serial number in August was discovered to have correct machined face surface area e Total engine exposure based on the 5 30 statistical sample 5689
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