MAINTENANCE MANUAL - Meritor

Prepare Parts for AssemblyRepair or Replace PartsNOTE:Threads must be without damage and cleanso that accurate adjustments and correcttorque values can be applied to fastenersand parts.1. Replace any fastener if corners of the headare worn.2. Replace washers if damaged.3. Replace gaskets, oil seals or grease seals atthe time of axle or differential repair.4. Clean parts and apply new silicone gasketmaterial where required when the axle or differentialis assembled. Figure 3.7.5. Remove nicks, marks and burrs from partswith machined or ground surfaces. Use a finefile, india stone, emery cloth or crocus cloth.6. Clean and repair threads of fasteners and holes.Use a die, a tap of the correct size, or afine file.WARNINGWear safe clothing and eye protection whenyou use welding equipment. Welding equipmentcan burn you and cause serious personalinjury. Follow the operating instructions and safetyprocedures recommended by the weldingequipment manufacturers.Axle weld locations and welding proceduresmust adhere to Meritor‘s standards. Weldingat locations other than those authorized by Meritorwill void the warranty and can reduce axlebeam fatigue life. Serious personal injury anddamage to components can result.Meritor permits drive axle housing assemblyrepair welding in the following locations only.• Housing-to-cover weld joints• Snorkel welds• Housing seam welds between the suspensionattaching brackets• Bracket welding to the drive axle housingPrepare the AxleWARNINGThe high temperature caused by the open flamefrom the cutting torch can ignite the oil inthe axle housing and can cause serious personalinjury.1. Remove the oil drain plug from the bottom ofthe axle housing and drain the lubricant fromthe assembly.1 - REMOVE SILICONE GASKET FROM PARTSFigure 3.8Repair Welding on Axle HousingsFor Complete Welding Instructions on MeritorDrive Axle HousingsSee the Maintenance Manual 8, Drive AxleHousings. To obtain this publication, see theService Notes page on the front inside cover ofthis manual.CAUTIONRemove the differential from theaxle housing before you weld ontoan axle. Do not weld onto an axlewith the differential installed.Electrical arching and damage tocomponents can result.16 MAINTENANCE MANUAL