H4-VV16A using design Nominal torque range Monoblock design Helical gear Reduction Box H4

Flender/Flender Gear Units/Helical gear Reduction Box H4

ge of the overrunningclutch turned by 1 and/or replace it. Contact Customer Service. Fitting new overrunning clutch. 5 / 7BA 5 en 0/2.2.1 Leakage and leak tightness In standard "DIN 3" information is given on the subject of leakage on gear units. Based on this and building on the extensive experience gained at Siemens* and other FVA member companies, brief descriptions, required measures and notes on this subject are included in the following overview. Table 1: Notes on the leak tightness of radial shaft seals (RWDR ) Condition Description Measures Notes Leaktight, dry No moisture to be seen on radial shaft seal.None Leaktight, damp Film of moisture formedfunctionally in the area ofthe sealing edge but notextending beyond thebottom side of the radialshaft seal.Only if dirt adheres, cleanbelow the sealing lip witha clean rag. The sealing lip must not be soiled. Monitor.The radial shaft seal often dries by itself in furtheroperation. No reason for complaint. Leaktight, wet Moisture film extending beyond the bottom side ofthe radial shaft seal butnot dripping.Clean below the sealinglip with clean rag. The sealing lip must not be soiled. Monitor.The radial shaft seal often dries by itself in furtheroperation. No reason for complaint. Measurable leak Small trickle to be seen on the bottom side of theradial shaft seal, dripping.Replace radial shaft seal ifnecessary;identify possible cause ofradial shaft seal failureand rectify.May be reason forcomplaint; one drop of oil aday is acceptable. Short-term leak Short-term failure ofthe sealing system. Clean below the sealinglip with clean rag. The sealing lip must not be soiled. Monitor.. . through small particles on the seal edge,which are removed againin further operation. No reason for complaint. Apparent leak Temporary leak. Clean below the sealing lip with clean rag. The sealing lip must not be soiled.Mostly due to excessivegrease filling between sealand dust lip or oilsecretions from the greasefilling of la