Description

Doosan D100, D120, D150, D110S-5, D130S-5 2011 Technical Manual

You’ve got a Doosan D100 or D120 on the lift, the customer’s waiting, and the aftermarket PDF you obtained doesn’t list a single torque value for the cylinder head. That’s the kind of shortcut that gets a head gasket replaced twice. This Doosan D100, D120, D150, D110S-5, D130S-5 2011 Technical Manual isn’t a generic rewrite. It’s the factory binder from 2011, 108 pages, stamped with the Doosan part number SB4097E02. If you’re rebuilding a DE08TS diesel or chasing a fuel system air lock, you need the OEM sequence, not some third-party guess.

Engine Specific Character – Omega Combustion Bowl

Page 5 of the manual covers the Omega combustion bowl design specific to the DE08TS. That’s the piston bowl shape that determines fuel atomization and compression pressure. If you swap pistons or re-ring without verifying that bowl geometry, you’re guessing at combustion quality. The manual gives the engine serial number ranges and the exact bowl dimensions. Pair that with the valve clearance adjust procedure on page 15 – intake 0.25 mm, exhaust 0.35 mm – and you’ve got a solid baseline. Don’t trust a spec that isn’t printed on a Doosan document.

6 Major Maintenance Sections

The Major Maintenance chapter (page 13 through 18) isn’t a light service schedule. It steps through cooling water checks, fan belt tension, engine oil and filter changes, fuel filter replacement, and the injection nozzle testing procedure. Page 17 outlines the fuel injection pump removal and air removal of the fuel system – a step most DIYers skip and then wonder why the engine won’t start after a filter change. The manual also includes the cylinder compression pressure test procedure on page 16. You’ll find that information nowhere in the aftermarket junk I’ve seen. For related engine manuals, check the Doosan D100 D120 D150 D110S-5 D130S-5 2006 Technical Manual if you’re working on an older build.

Engine Disassembly Procedures (Page 27)

Page 27 starts the actual teardown: heed at disassembly, oil level gauge, engine oil drain, cooling fan removal, belt, thermostat. It’s procedural – no shortcuts. The manual calls out specific tools: a puller for the vibration damper, a socket for the cylinder head bolts (torque sequence is on page 32). You get the water pump removal, oil cooler, turbo charger, and cylinder head cover steps. Each component is listed in order, with torque values where required. If you’re pulling a D150 or D110S-5 engine for a rebuild, this is the sequence that prevents broken bolts and damaged gasket surfaces.

Diagnosis and Remedy (Page 18)

Page 18 is a dedicated troubleshooting table. It lists symptoms – engine won’t start, low power, excessive smoke, overheating – and the factory‑recommended remedy chain. No generic “check fuel system” advice. It ties each symptom to a component test on a specific page. Low compression? Go to page 16. Fuel injection pump issue? Page 17. This diagnostic chapter alone justifies the price of the manual. I’ve had techs tell me aftermarket sources gave them a list of twenty possible causes with no priority. Doosan’s table is ranked by probability. That’s the difference between a 20‑minute fix and a whole afternoon of chasing ghosts.

Why Factory Specs Matter for This Doosan Manual

I’ve been burned by aftermarket documentation that lists torque values rounded to the nearest foot‑pound. Doosan’s manual gives you the exact OEM tightening sequence: for cylinder head bolts, the angle‑tightening method, the final torque (in N·m, but you convert to ft‑lb – the manual doesn’t do that for you, and that’s fine). The specifications table on page 6 lists compression pressure, injection timing, and valve clearances. Every number came from Doosan’s engineering lab, not a copy‑paste job from a Chilton book. That’s why I tell every home garage guy: spend the money on the factory document. A single wrong torque value on a D130S-5 can cost you a head or a cracked block. The extra hundred bucks for the genuine manual is insurance.

If you’re comparing this to the 2006 edition, the Doosan D100 D120 D150 D110S-5 D130S-5 2006 Technical Manual OEM Specs shares the same engine family but the 2011 revision adds an updated safety chapter and a revised injection pump procedure. The Doosan D110S-5, D130S-5, D160S-5 2006 Technical Manual | OEM Specs is for the forklift models only; this 2011 manual covers D100 through D150 plus the D110S-5 and D130S-5. Verify your model year before buying.

For background on diesel engine maintenance fundamentals, the Manual Transmission section of the Doosan training materials covers power flow basics, but that’s a separate document. If you need a refresher on general diesel fuel system air bleeding, the Manual Transmission article on Wikipedia gives a decent overview, though it won’t match the step‑by‑step for the DE08TS fuel supply pump on page 17 of this manual.

Frequently Asked Questions

Does this manual cover the D160S-5 as well?

The cover lists D160S-5, but the index doesn’t include a separate spec table for it. Use the D130S-5 data as a baseline – the engine displacement is the same DE08TS – but verify injection timing with a dealer if you’re building a D160S-5.

Are torque values given in imperial units?

No. The factory manual uses Newton‑meters. You’ll need to convert to ft‑lb. I carry a conversion chart in my toolbox. Don’t guess – a 10 N·m error on a main bearing cap will fail.

What page has the fuel injection pump timing?

Page 17.

Is this manual the same as the one Doosan dealers use?

Yes, it’s the exact same PDF that ships with the factory service tooling. The dealer may have a later revision (2020+), but for the 2011 model year engines, this is the authoritative document.

Stop chasing bad readings from a third‑party copy. Access the Factory Manual and keep it pinned to your digital toolbox. The 108 pages are indexed, the wiring diagrams are legible, and the torque values are correct. Your engine rebuild will thank you.