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Mercedes Vito/Viano W639 Transmission Oil Pump Replacement (722.6 | OM646) – Step-by-Step Guide

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Added by MiAmigo
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In this detailed DIY guide, we show you how to replace the automatic transmission oil pump on a Mercedes Vito / Viano W639 equipped with the 722.6 5G-Tronic gearbox and OM646 diesel engine.

Whether you're facing low transmission pressure, shifting issues, or just performing preventative maintenance, this video walks you through the full process — from disassembly to reinstallation.

Parts list:
Febi 46395 sump bolts x 6 in a bag
Febi 10098 transmission filter kit - Filter, sump gasket + filler cap safety clip
Febi 36449 ATF 5L bottle (2 x needed) 8L for a dry transmission fill
Febi 38023 Dip stick

???? Topics Covered:

Symptoms of a failing transmission oil pump

Tools required

Step-by-step removal & installation

Transmission fluid tips

Common mistakes to avoid

???? Vehicle Compatibility:

Mercedes-Benz Vito W639

Mercedes-Benz Viano W639

2.2 CDI & 2.1 CDI OM646 engine models

5-speed 722.6 automatic gearbox

???? Don’t forget to like, comment, and subscribe for more Mercedes DIY repair tutorials!

???? Need help? Drop your questions below!

#MercedesDIY #7226Transmission #W639Repair
#MercedesVito #MercedesViano #W639 #7226Transmission #OM646 #TransmissionRepair #MercedesDIY #GearboxFix #AutoRepair #CarMechanic
Category
722.6
Tags
Mercedes Vito transmission repair, Mercedes Viano transmission, W639 oil pump replacement
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