Vickers Cylinders Series TE/TF/TL Air & Hydraulic

Vickers CylindersSeries TE/TF/TL Air & Hydraulic CylindersInstallation & Service Manual

ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Cylinder Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Model Code (Cylinder Identification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Vickers, Incorporated 1997All Rights Reserved

IntroductionPurpose of manualCustom cylindersReplacement partsThis manual has been prepared toassist users of Vickers Series TE, TFand TL cylinders for properlymaintaining and repairing their units. Inthe sections that follow, instructions aregiven for proper installation,maintenance and overhaul.Although the model code has beenarranged to cover the vast majority ofavailable options, there will beoccasions when an option which cannotbe coded will be required. When suchan option has been specified, enter an“X” for the appropriate item in the modelcode. For example, an application whichrequires a custom thread on the end ofthe piston rod, an “X” is inserted for item7. The cylinder will include a unique fivedigit design number.Each design number has a completedbill of materials on file in a quick retrievalcomputerized storage system. Thisgives the Field Sales Representativesrapid access in identifying andspecifying genuine Vickersreplacements parts.General informationModel codes have many variationswithin a basic model series. They arecovered by variables in the model code.Service inquiries should always includethe complete model code number asstamped on the head or cap and threedigit plant code.How to orderVickers has developed an easy systemfor ordering cylinders. This system hasbeen developed to improve ease ofordering. The model code consists ofsixteen alpha-numeric digits which fullydescribe the most common standardoptions offered.To specify your cylinder, review theModel Code section for a full descriptionof each option available andcorresponding code.Replacement cylindersEvery custom cylinder is assigned aunique design number. This number iscontained in the last five digits of thesixteen digit model code. Item 12 isalways an alpha character. The “Stroke”and “Extra Rod Projection” positions(items 12 through 16) become the“Design Number” items for customcylinders. When ordering a replacementpart or cylinder, give the sixteen digitmodel code or the five digit designnumber to your local VickersRepresentative.Figure 1. Cylinder Section View1

Cylinder InstallationAll Vickers Series TE, TF and TLcylinders are individually tested andinspected before shipment to assurefreedom from defects. Plugs are insertedin the ports to protect threads and keepforeign matter from entering the cylinderprior to installation.Mounting and alignmentPosition the cylinder loosely in themounting and check the alignment of thepiston rod with the load connection atboth ends of the stroke. If the cylinderis too large to move by hand, proceedwith piping and installation and operatecylinder throughout the stroke prior toconnection.Trunnion and swivel mount bearingsshould fit closely for the entire length ofthe pin, and must be square with theload connection throughout the stroke.Flush or foot mounted cylinders may bepinned or keyed to prevent shiftingduring high shock loads.Always use the wrench flats whenconnecting piston rod to load to preventdamage to the sealing surface. Tightenpiston rod against shoulder or use alocknut on full size threads. If cylinderhas been pressurized, relieve allpressure prior to turning the piston rod.Piping connectionsAll piping connections should bedeburred and the system thoroughlyflushed to purge all contaminants prior toconnecting cylinder ports. Care shouldbe taken to prevent over tightening ofthe piping connections.Cylinder operationCycle cylinder a few times with reducedload and pressure. Hydraulic cylindersmay be erratic due to trapped air, but willnormally purge themselves after severalcycles. Some cylinders may beequipped with air bleed screws whichcan be slowly loosened with a male keywrench, then re-tightened after air ispurged.Cushioned cylinders are adjusted andtested prior to shipping, but usuallyrequire additional adjustment afterconnection to the work load. If cushionadjustment screw has a locknut, loosenand hold with wrench while turning thescrew.To increase effectiveness of the cushion,turn the adjustment screw clockwise. Toprovide less cushion, turn the screwcounterclockwise. Most orifices are fullyopen with two full turns of the screw fromthe closed position.The final position of the screw should bea balance between any shock or bounceat the start of the cushion and the finalimpact of the piston at the end of stroke.2

TroubleshootingMost problems in fluid power circuitsresult in a gradual or sudden loss ofpower in the work cylinders, which maycause them to stall or move slower thanrequired. This chart assumes that allother components of the circuit such asthe pump, relief valve, control valves,hydraulic supply, etc. have beenchecked and the problem has beenisolated to the cylinder.Properly installed and maintainedcylinders should function for millions ofcycles. Premature cylinder failures areusually caused by system or applicationproblems that can be prevented. Thepurpose of this chart is to aid in identifyingand correcting the most common causesof premature cylinder failure.Check Cylinder forEvidence of:Caused By:Action Required:Excessive wear onpiston rod.Side load due to misalignment between cylinderand load.Check alignment of rod with load connection atall points in stroke.Pivot mount cylinder without proper stop tubing.Follow Vickers cylinder catalog designrecommendations.Exceptionally dirty environment.Clean and flush the entire system, deburrconnections.Worn rod wiper/scraperShield piston rod area from direct contact withcontaminant.Lack of, or improperly adjusted cushions.Reference adjustment instructions in this manual.Load and piston speed combination exceedscylinder cushion capacity.Consult your Vickers Sales Engineer.Lack of, or improperly adjusted speed controls.Add or adjust flow controls to reduce piston speed.Excessive system pressure.Reduce pressure to minimum required to movethe load.Contamination incylinder.yImpact damageg orb k parts.brokentPerma

Vickers Cylinders . Some cylinders may be equipped with air bleed screws which can be slowly loosened with a male key wrench, then re-tightened after air is purged. Cushioned cylinders are adjusted and tested prior to