Daewoo D1146, D1146TI, DE08TIS 2001 Service Manual

If you are wrenching on one of these six-cylinder inline diesels—whether it’s the D1146, the turbocharged D1146TI, or the DE08TIS—you already know the frustration of chasing specs that don’t match. Aftermarket reprints mess up torque values, skip wiring details, and leave you guessing on clearances. This Daewoo D1146, D1146TI, DE08TIS 2001 Service Manual is the real deal: factory-issued by Daewoo Heavy Industries & Machinery Ltd., printed in Feb. 2001, and scanned from an original maintenance manual. 147 pages of verified data, not some third-party compilation.

Engine Disassembly: Starting on Page 33

The manual doesn’t waste space. Section 3.1 (page 33) walks you through engine disassembly in the order Daewoo intended—removal, inspection, cleaning, with directional indicators and warning symbols for steps that need special tools. Page 33 gets you into the block. You get the factory sequence for lifting the head, pulling the pistons, and cracking the main bearing caps. No shortcuts. The section includes pay-close-attention icons for steps that can ruin a liner if you rush. I’ve seen techs skip the alignment marks on the timing gear; this manual flags that on the same page. Follow it, and you won’t be buying a new camshaft.

Cooling System and Fuel Injection: What This Manual Covers

Section 4.1 is the cooling system—radiator, water pump, thermostat checks, and coolant disposal guidelines that keep you out of trouble with local regulations. Page 98 onward. Section 4.3 dives into the fuel injection pump: removal, installation, timing, and the special tool list on page 132 that tells you exactly which Daewoo part numbers you need. No guessing. I’ve had to order the wrong puller because an aftermarket book said “use standard tools.” This manual says “use special tools of manufacturer’s,” then lists them. That saves a trip to the parts store. The turbocharger section (4.4, page 122) covers the D1146TI and DE08TIS variations. Wastegate rod adjustment? It’s in there. Oil return line torque? Factory spec.

147 Pages of Factory Data

147 pages—that’s not padding. The table of contents runs from general repair instructions (page 1) through engine specific character, specifications, assembly, major maintenance, diagnosis and remedy, engine inspection, disassembly, measurement and inspection of major parts, reassembly with breaking-in procedure (page 96), cooling, lubrication, fuel injection pump, turbocharger, and a special tool list. Appendix finishes it. Every page has original Daewoo part numbers and torque values in Nm and lb-ft—because the engineers who built these engines wrote it. You rely on that when you’re torquing a cylinder head on a bus engine that sees highway miles. One wrong value and you’re pulling a head gasket ten thousand miles later.

Why OEM Documentation Beats Aftermarket Reprints

I have a stack of aftermarket manuals on my shelf that quote the wrong compression ratio for the D1146. They copy from each other and introduce errors. This is the original PDF from Daewoo’s own service publication. Page 2 has the foreword with the February 2001 date. Page 4 shows the contents. You get the actual symbols for removal, adjustment, inspection, measurement—not a generic icon set. The PDF includes the worldwide network list at the back, so you can find an authorized dealer if you need a part. When I see a manual that still says “pay close attention—important” in the factory typeface, I know it’s the real thing. That’s why you buy from AutoRepairManuals: they license verified OEM scans, not recycled photocopies.

D1146, D1146TI, DE08TIS: Audience Fit

This manual fits two groups. First: the home garage mechanic who bought a used bus or industrial engine and needs to do a rebuild. You are not a pro, but you know how to turn a wrench. The step-by-step procedures with cleaning, inspection, and measurement sections (3.2) show you how to check cylinder bore wear, ring end gap, and bearing clearance. Second: the shop owner like me who keeps a library for the odd job. If a DE08TIS rolls in with a fuel knock, you need the diagnosis chart in section 2.2. This manual gets you paid. Pair it with the related manuals for other Daewoo models: Daewoo D2366 D1146 Diesel Engine Service Manual – Section: Section Index and Daewoo D1146 D1146TI DE08TIS Diesel Engine Shop Manual. For a broader view of the D1146 family, Daewoo D2366, D1146, D1146T, D2366T Service Manual – 197 Pages covers additional variants.

Understanding how an Internal Combustion Engine works helps, but this manual assumes you already know the basics. It doesn’t teach you valve timing theory; it tells you exactly how to set the Daewoo four-stroke direct-injection unit. If you need transmission data alongside the engine work, check Manual Transmission resources separately—this is strictly engine and its ancillaries.

Frequently Asked Questions

Does this manual include torque specifications for the cylinder head?

Yes. The reassembly section (page 69) lists head bolt torque in a step sequence with the specified angle. Tighten to specified torque, then turn the specified angle. Factory data only.

Is the fuel injection pump covered in enough detail to replace seals?

Section 4.3 (page 106) covers removal, disassembly, inspection, reassembly, and timing of the fuel injection pump. It includes the special tool numbers from Daewoo. If you have the tools, you can do the job. This section also lists the injection timing specifications for the D1146, D1146TI, and DE08TIS separately—they are not the same. Use the wrong timing and the engine will knock. The manual warns you with a pay-close-attention symbol on page 110. I would not attempt pump work without this guide.

Can I use this manual for the D1146TI turbo version?

Yes. The manual covers all three models: D1146, D1146TI, and DE08TIS. The turbocharger section starts on page 122. Wastegate adjustment, oil line routing, and torque values for the turbo mounting bolts are included. Different models have different compressor housing part numbers; the manual lists them in the appendix.

Does the PDF have bookmarks for quick navigation?

The file is scanned from the original printed manual. Page numbers are clear. The table of contents on page 4 shows section start pages. You can jump to any section by typing the page number. No interactive bookmarks, but the OCR allows searching for keywords like “cooling” or “fuel injection.” Works fine on a tablet or laptop in the shop.

You don’t have time to hunt down specs from a dozen forums. You need the one authoritative source that Daewoo put together for its own service network. This 147-page factory manual gives you the engine specifics, maintenance schedules, and the exact clearances that make these diesel engines run reliably for hundreds of thousands of miles. Click the button below to download the manual and get the real data onto your workbench.

Download the Factory Manual.