Scania DI16 500, 400 Series Engine Service Manual (TP6676)

These DI16 engines usually live in hard service—heavy trucks, industrial powerpacks, or marine work where they sit under load for long stretches in heat, dust, or salt air. This Scania DI16 500/400 Series Engine Service Manual helps you trace faults logically, strip and refit components in the right order, and set critical adjustments so the engine goes back to work first time. For example, if you’ve got a hard‑starting hot engine with uneven idle, you’d use this manual to isolate whether you’re dealing with a fuel, timing, or compression issue before you touch any major parts.

Applications & Use Cases

• Verify suspected failures (turbo, injectors, pumps) with step‑by‑step checks before replacing anything.
• Follow the correct disassembly/assembly sequence for heads, timing gear, and auxiliaries to avoid damage.
• Use adjustment procedures to set linkages, clearances, and timing so the engine runs smooth after repair.
• Trace oil, coolant, or fuel leaks by following routing diagrams and sealing points.
• Support full overhauls by keeping components aligned, torqued, and reinstalled in the proper order.

FAQ

Q: Can I keep this manual open on a tablet in the workshop?

A: Yes, it’s practical to use on a tablet or laptop; just keep the device protected from dirt and fluids.

Q: Is it worth printing sections of this manual?

A: Many techs print the pages for the job they’re doing so they can mark notes and keep them at the engine.

Safety Note

Always lock out the starter and secure all rotating components before working on the DI16 engine.

Scania DI16 500, 400 Series Index:

. . . Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
SI Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Markings on bolts and nuts . . . . . . . . . . . . . . . . 8
Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Bolted joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Left-hand threads. . . . . . . . . . . . . . . . . . . . . . . . 8
Tightening torques . . . . . . . . . . . . . . . . . . . . . . 6 Hexagon bolts . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Angle tightening . . . . . . . . . . . . . . . . . . . . . . . . 7 Generael tightening torques . . . . . . . . . . . . . . . 9
Retightening . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Union assemblies and plugs . . . . . . . . . . . . . . . 9
Re-use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thread inserts . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 and more

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