Description

Mercedes-benz G 210/16, G 211/16, G 240/16 Training Manual

You are pulling a G 240/16 out of a Freightliner because the driver lost fourth gear and you are staring at a planetary carrier you have never seen before. Without factory documentation you are gambling on clearances and snap ring depths that will cost you a redo if you guess wrong. This Mercedes-benz G 210/16, G 211/16, G 240/16 Training Manual is the exact binder Mercedes-Benz hands to dealer techs during transmission school. Forty-four pages of schematics, exploded views, and measurement callouts that take you from the input shaft to the rear oil pump without missing a single circlip.

I have rebuilt truck transmissions since before most of you were born. Every time I see a aftermarket reprint of a Mercedes manual I cringe—they drop half the torque values and the lubrication circuit detail is always wrong. This copy is scanned from an original Mercedes-Benz Global Training document. The paper might be a little aged but the data is the same data the factory used to certify technicians.

Transmission Model Designation – What the Numbers Mean

The manual opens with a breakdown of commercial designations for each model. G 210/16, G 211/16, and G 240/16 share the same basic architecture but differ in torque capacity and output shaft configuration. Page 5 of the training manual lists the exact gear ratios, PTO drive options, and clutch housing patterns. If you are swapping a 240 into a chassis that originally had a 210 you need these dimensions to mate the bellhousing correctly.

Lubrication Circuit and Oil Flow

Transmission oil is your only coolant inside those gearboxes. The manual dedicates three pages to the lubrication circuit: oil pickup, pump location (rear cover for 240 and 210 variants), and the internal galleries that feed the planetary sets and synchronizers. Page 10 shows the complete flow path with pressure tap locations. Skip this section and you will starve the rear bearings on a long downhill grade.

Planetary Gear Set Breakdown

This is where most DIY guys get into trouble. The planetary group (page 15) is assembled in a specific order of sun gear, planet carrier, and ring gear with selective washers for end play. The manual gives the factory shim selection procedure using a depth micrometer. No guesswork. You measure the gap between the carrier and the case, then pick the washer that puts preload in the sweet spot.

Interlock System – Preventing Gear Clash

The interlock (interbloqueador on page 24) is a mechanical safety that prevents engaging two gears at once. The manual shows the interlock pin positions for every shift rail combination. I have seen rebuilt transmissions that grind going into reverse because the interlock pin was installed backwards. This section also covers the neutral start switch adjustment – a job that requires a .004-inch feeler gauge and a specific voltage reading at the harness connector.

Electro-Pneumatic Control Schematic for GV and GP

Pages 36 and 37 contain the factory electro-pneumatic diagrams for the gearbox splitter (GV) and planetary range (GP) actuators. Two versions: one for 1938S chassis, one for LS1938. If your G 240/16 is in a vocational truck with a different ECU, the wiring colors and solenoid resistances still match what is printed here. These schematics are not reproduced in any aftermarket manual I have ever seen.

Related training materials that complement this manual include Mercedes-Benz Truck 2010 Training Manual – Air Brake & Suspension, Mercedes-benz 327 2004 Training Manual – Brake Assist System, and Mercedes-benz 212 2009 Training Manual – Factory Systems Guide. For a broader understanding of manual transmission fundamentals, refer to Manual Transmission theory and Manual Transmission design variations.

Audience Fit – When to Buy This Manual

Home garage enthusiasts who own a heavy truck or vocational rig with a G-series transmission need this document if they plan to pull the box themselves. Professional transmission shops will use it for training new hires or verifying stack heights on a rebuild. The manual is written for Mercedes-Benz dealer technicians, so you should be comfortable reading exploded views and hydraulic diagrams. If you have never split a truck transmission before, pair this with a hands-on course.

Source Validity – Why OEM Matters

Mercedes-Benz Global Training produces these documents for internal use. Every spec, every pressure value, every clearance callout comes from the engineering group that designed the gearbox. Aftermarket manuals cut corners to reduce page count. This one does not. You get the same 44 pages that a Stuttgart-trained mechanic studies. No condensation, no editorializing.

Is this manual in English?

No, the original is in Spanish.

What torque values are listed for the mainshaft nut?

The training manual does not list torque values in a separate table; instead, torque specs appear inline with assembly procedures on pages such as the planetary group section. You will need a torque wrench capable of at least 450 Nm (332 ft-lbs).

Does the manual cover both G 210/16 and G 240/16 differences?

Yes, each section compares the two models where internal dimensions differ—oil pump location, output shaft length, and synchronizer count. The G 211/16 is essentially a G 210 with a different PTO interface, and the manual notes those exceptions on page 5.

Can I use this manual to rebuild a G 240/16 without any prior transmission experience?

You can use it as a reference, but a training manual assumes you already know how to use dial indicators, snap ring pliers, and press tools. If you are a first-timer, I recommend watching a professional rebuild video first and then tackling the job with this manual open to the planetary assembly page.

Stop searching for blurry photocopies on forums. Access the Factory Manual from AutoRepairManuals and get the same information Mercedes-Benz pays its technicians to learn. Your transmission will last longer and you will not lose a weekend redoing a rebuild because a third-party manual left out the interlock pin orientation.