Using a step by step approach, this video will show you how to DIY change the transmission oil and filter in a Mercedes 7Gtronic (also knows as 722.9) Transmission / Gearbox. Also, how to achieve the correct fluid level adjustment after the oil change.
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Recommended oil: It is important that your oil has MB-approval 236.14 on the label. Some of the most common MB-approval red fluid 236.14 oils are as follows:
Fuchs Titan ATF 4134
Mobil ATF 134
Pentosin ATF 1345
Shell ATF 134
Valvoline ATF Pro 236.14
Recommended parts and fluids
Pre 2010 no stop / start You will need up to 7 litres of red fluid.
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👉 USA Link: [ Ссылка ]
From mid-2010 onwards a 7G Tronic plus auto transmission was fitted and this one used blue transmission fluid. NOT FEATURED IN THIS VIDEO. This fluid is 236.15, designed for cars with Start / Stop feature.
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Transmission Service Set: Pan Gasket, bolts set, internal filter etc
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Specialist Tools for this job:
Infra-red thermometer - Essential for checking that the oil temperature is right prior to the level check / adjustment
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Small torque wrench (capable of 4Nm as a lowest setting) - The Aluminium oil pan bolts are easy to shear if not torqued correctly
👉 UK link: [ Ссылка ]
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Hand fluid pump and hose for refilling the gearbox
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Long Arm Allen keys (size up to 10mm required) - Used for the sump plug removal
👉 UK link - [ Ссылка ]
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Set of trim removal tools - makes removal of the undertray plastic fittings much easier
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👉 USA link: [ Ссылка ]
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Standard Tools:
(If you are using a trolley jack and axle stands)
Trolley / Floor Jack (2 or 3 metric Ton rating recommended)
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Trolley / floor jack sill / pinch weld adaptor (To AVOID damaging the sill / pinch weld)
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Axle / Jack stands (pair of)
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(I was using a manual 4 poster lift) Hamer lift - [ Ссылка ]
Breaker bar (1/2” drive) 450mm / 18" long
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½” drive metric socket set
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¼” drive metric socket set
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Torx "bits" to fit screwdriver or small socket set
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👉 USA link: [ Ссылка ]
Here is a list of some of the models where you will find the 7G tronic transmission.
C-Class (model 203/204/205)
CLK-class (Type 209)
CLS-class (Type 218/219)
E-class (Type 207/211/212)
S-Class (Model 220/221/222)
SL-Class (model 230/231)
SLK-Class (model 171/172)
Sprinter (Type 906)
Viano / Vito (Type 447)
Refilling kit:
M12x1.5 (male thread) to 6mm ID (internal diameter) hose – Hosetail
0.5m Length of 6mm ID hose
2 x ¼” BSP (male thread) to 6mm ID hose – Hosetails
Mini ball valve with ¼” BSP female threads on both sides
0.5L capacity Hand operated / Syringe type pump
4x 7-9mm ID hose clamps
PTFE tape – apply to all threaded joints
00:00 - Mercedes Automatic Transmission Fluid Change
00:10 - Mercedes W203 C209 7G tronic 722.9 transmission fluid change
02:50 - Remove Mercedes W203 C209 722.9 Transmission Pan
06:19 - Mercedes 7G tronic 722.9 transmission filter
12:46 - Mercedes 7G tronic 722.9 Transmission fluid fill
17:58 - Mercedes 7G tronic 722.9 Sump Plug Torque
Affiliate links: This video and description contains affiliate links, which means that if you click on one of the product links, I may receive a small commission.
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