Description

Lombardini LDW 502, LDW 602, LDW 702, LDW 903, LDW 1003 2006 Workshop Manual

You’ve got a Lombardini LDW series on the bench. Maybe it’s an LDW 502 from a generator, or an LDW 1003 off a pump. You need the right torque for the cylinder head, the exact clearance for the valve train, and the proper diagnostic sequence when the engine won’t start. Guessing costs you parts and billable time. Aftermarket PDFs with rounded-off specs get you a blown gasket or a snapped stud. This is the Lombardini LDW 502, LDW 602, LDW 702, LDW 903, LDW 1003 2006 Workshop Manual – the genuine OEM factory book, not a translation by someone who never turned a wrench. 92 pages of what Lombardini wrote for their own techs.

Hauptsächliche Anzugsdrehmomente: Torque Tables That Matter

Flip to the section HAUPTSÄCHLICHE ANZUGSDREHMOMENTE. That’s the chapter you’ll wear out first. Every fastener – head bolts, connecting rod nuts, flywheel – with values in Newton-meters. The manual also gives you FESTZIEHEN DER DREHKRAFT-TABELLEN (tightening torque tables) so you know the sequence and angle if it’s a torque-to-yield joint. Page 73 in the PDF shows the charge pressure specs for the LDW 702 and 1003. Don’t trust a third-party summary; the factory data is right there.

Störungsbehebung: Diagnose According to Lombardini

Section STÖRUNGSBEHEBUNG covers the step-by-step troubleshooting procedure. It starts with the fuel system – lift pump pressure, injector opening pressure, bleed sequence. Then electrical: starter draw, alternator output, glow plug resistance. Each step tells you what to measure, what tool to use, and what the factory acceptable range is. No guesswork. If the engine cranks but won’t fire, you go through that list in order, not jump to replacing parts.

Warnungszeichen and Sicherheitsvorschriften: Safety First

Right after the guarantee, you get Warnungszeichen (warning symbols) and Sicherheitsvorschriften (safety regulations). Lombardini spells out the hazards – hot coolant, rotating belts, high-pressure injection. The manual expects you to have the proper personal protective equipment and to lock out the machine before opening the fuel system. Ignoring these sections gets you hurt. I’ve seen guys skip them. Don’t be that guy.

Motordaten LDW 502-602-903: Specs You Need for Ordering Parts

The MOTORDATEN tables list cylinder bore, stroke, displacement, compression ratio, firing order, and injection timing for each model. LDW 502 and 602 share the same bore? Check the table. Oil capacity for the LDW 903? It’s in WARTUNG – VORGESCHRIEBENES SCHMIERÖL – FROSTSCHUTZMITTEL – FÜLLMENGEN. That’s the maintenance section with prescribed oil grades and capacities. Also covers antifreeze concentration for San Antonio winters (or anywhere else).

Spezialwerkzeuge: The Tools List You Can’t Skip

Pages 4-5 (the MONTAGE/DEMONTAGE introduction) list the special tools required: puller for the injection pump gear, dial indicator for injection timing, torque angle gauge for head bolts. The manual assumes you have these or can make them. If you’re a home garage guy, at least know what you’re missing before you start. Nothing worse than getting halfway through a job and realizing you need a Lombardini-specific flywheel holder.

This manual covers the full Lombardini FOCS engine family – LDW 502 through LDW 1204/T. The 2006 edition is the sixth release, with updates through September 18, 2006. Every section marked with a revision date. Lombardini FOCS Series Workshop Manual is the companion for the earlier models, but this one supersedes it for the LDW 702, 1003, and 1404. For other Lombardini models, check the LOMBARDINI 8LD600-2/665-2/740-2 Workshop Manual. If you work on vintage tractors, the Manuel d’Atelier Tracteurs Ferguson TEF20 has its own torque procedures.

Outside of Lombardini engines, a solid understanding of Manual Transmission principles helps when you’re bolting a gearbox to the flywheel housing. The Automotive Industry Overview covers standards that Lombardini follows too – ISO metric threads, standard torque classifications.

Don’t waste time on aftermarket reprints that omit data. This 92-page workshop manual gives you the original factory information – torque values, diagnostic flows, wiring diagrams, special tool numbers, and even storage procedures for long-term layup. Access the Factory Manual and keep it within arm’s reach of your workbench.

Is this manual in English?

No, it’s in German. But the torque tables and diagrams are universal. If you can read a spec sheet, you can use this.

Does it cover the LDW 1204/T?

Yes, the manual includes data for LDW 1204 and LDW 1204/T as part of the FOCS series. The section MOTORDATEN 502/602 – 903 – 1204 – 1204/T has those specs.

What type of oil does Lombardini recommend for the LDW 702?

The WARTUNG section lists viscosity grades based on ambient temperature. For example, SAE 10W-30 or 15W-40 depending on climate. The manual gives the Lombardini part numbers for the approved oils.

Are the wiring diagrams in color?

They are black-and-white line drawings with component labels. Each wire is numbered and color-coded with abbreviations. Enough detail to trace a short circuit.