Description

Mercedes-benz 230 G Workshop Manual — Factory Print for the G-Wagen

Listen, I’ve seen too many G-wagens come in with stripped threads because some kid used a generic manual that guessed the torque. If you’re working on a 230 G, you need the actual factory data. This Mercedes-benz 230 G Workshop Manual is the original Daimler-Benz document. 236 pages of what the engineers wrote, not what some third-party rewriter thought you wanted to hear.

Engine Identification: Low-Compression vs. Standard

Page 2 of this manual gives you the hard specs. Engine 115.973 comes in two flavors: low-compression at 8:1 and standard at 9:1. You can’t tell them apart by looking at the engine model number — the manual tells you to check the plate on the cylinder head cover. The standard-compression engine (9:1) gets an additional code number 752. If you’re rebuilding one of these and you don’t know which you’ve got, you’re going to set the timing wrong or use the wrong fuel. The manual also shows the yellow sticker near the fuel filler that indicates ROZ minimum 91 or 98. That kind of detail saves you from a melted piston. I’ve seen it.

Does This Manual Cover the Transfer Case and Axles?

Yes. The workshop manual is organized by design groups. The table of contents includes sections like 030_1 (likely transfer case), 040_1 (front axle?), 050_1, and so on. You’ll find exploded views of the drivetrain components, including the Manual Transmission section — that’s our Manual Transmission portion. If you’re pulling the gearbox on a 230 G, you want the factory diagrams, not a Chilton drawing that’s been redrawn three times. The manual also covers the cross-country vehicle specifics like the 002/1 designation. Don’t skip the installation survey on sheet 01.61 — it lists the engine output: 66 kW (90 PS) for low-compression, 75 kW (102 PS) for standard, both at 4600 RPM.

7 Systems Covered Across 236 Pages

I counted the major sections from the bookmarks: engine (group 1), clutch and transmission (group 2), axles and suspension (group 3), steering and brakes (group 4), electrical (group 5), body (group 6), and special equipment (group 7). That’s seven distinct systems. Each section has its own exploded views, torque values, and adjustment procedures. For example, the engine section includes longitudinal and cross-section drawings (TCS 9596 and TCS 9599) that show you exactly where every seal and bearing sits. When you’re working on a 4×4 that’s been in the mud for 30 years, those drawings are your roadmap. The manual is 236 pages — not 50, not 100. It’s comprehensive enough to do a frame-off restoration if you take it slow.

Get the Right Torque Data Before You Turn a Bolt

I’ll tell you straight: most head gasket failures I see on these old G-wagens come from under-torqued or over-torqued head bolts. This manual gives you limit values — the factory’s own numbers for all critical fasteners. The text says flat out: “The data given in the text and in the tables are limit values, intended for basic overhauls.” That means you get the exact ft-lb or Nm targets, not a range that’s wide enough to drive a truck through. Need the charge pressure for the injection pump? Page 73 might have it (the manual doesn’t provide a flat page index, but the sections are logically numbered). You have to cross-reference the group numbers, but that’s how factory manuals work — they expect you to read them, not skim them. Manual Transmission procedures, for example, give you the clutch adjustment specs in detail.

OEM Documentation: Why the 230 G Manual Matters

I trust aftermarket manuals about as far as I can throw a loaded tool chest. They re-write, they misinterpret, they leave out the stuff that doesn’t fit their template. This one is a direct scan of the Daimler-Benz Kundendienst (customer service) publication from Werk Wörth. The part numbers listed are for identification only — for actual parts ordering, you need the valid spare parts lists. But the assembly sequences, the adjusting values, the illustrations — they’re all original. No reprints, no copy. If you’re a shop owner or a serious DIY guy, you keep this on the bench next to your torque wrench. Don’t rely on a YouTube video that says “just tighten it until it feels right.” That’s how you snap a bolt in a G-wagen block at 3 PM on a Saturday. Related manuals you might need: Mercedes-benz 200, 230, 260, 300 1994 Workshop Manual – Factory Specs, Mercedes-benz 108D, 110D Workshop Manual – OEM Engine Specs, and Mercedes-benz Sprinter 2011 User Manual – Warranty & Service Info.

Is this manual in English?

No, the original factory print is in German. However, the diagrams, torque tables, and part numbers are universal. If you can read a spec sheet, you can use this manual.

Can I use this for a 1980 230 G?

Yes, the manual covers production up to the early 80s. Check the yellow sticker reference — October 1979 is mentioned.

Does it include wiring diagrams?

Yes, electrical group 5 covers wiring. The exact pages are not numbered continuously, but the section 1561 (page numbers 065_1 onwards) includes electrical components.

What if I need torque specs for the differential housing?

The axle section (group 3) has the values. For the 230 G’s front and rear diffs, you’ll find the assembly limits under the 030_1 and 040_1 bookmarks. You have to trace the section numbers, but that’s how OEM manuals work. No shortcuts.

236 pages. That’s what you get. No fluff, no filler — just the factory’s own instructions. If you’ve got a Mercedes-benz 230 G on your lift or in your garage, this is the only manual you should trust for engine overhaul, drivetrain repair, or electrical troubleshooting. Don’t waste time guessing. Access the Factory Manual from AutoRepairManuals and get the original documentation on your bench.