Description

Dynapac LG400 Parts Catalog – 66-Page OEM Spare Parts Guide

If you’ve ever ordered a replacement bolt for a plate compactor and got the wrong thread pitch because you trusted a generic parts list, you know why this catalog exists. I’ve seen guys bolt a Honda GX390 on an LG400 with mismatched isolators because some third-party site listed the wrong part number. Then they wonder why the machine shakes itself apart. Dynapac LG400 Parts Catalog – the OEM book – fixes that mess before it starts. This is the same document Dynapac hands to their dealers. 66 pages, factory exploded views, and part numbers that actually match the hardware on the machine.

Dynapac LG400 Parts Catalog: What You Get in 66 Pages

This isn’t a repair manual. It’s a parts identification catalog. Every page is built around exploded diagrams that show you exactly how each assembly goes together. You get a clear part number for every nut, isolator, belt, and engine component. The catalog covers two engine options: the Honda GX390 and the Lombardini 15LD 440. Each engine has its own section with separate part numbers. If you need a carburetor rebuild kit for the GX390, you’ll find the correct kit number. If you’re replacing the exciter on the Lombardini, it’s in there too. The layout follows the machine’s structure – base plate, engine mount, vibration assembly, handle, controls. Each group gets its own page or spread. Page 5 explains how to read the parts list, including the remarks column that flags superseded parts or special notes.

The ordering procedure is printed right on page 4. You need to give the machine type, serial number, quantity, part number, denomination, and dimensions if ordering by length. Miss one of those and your parts order gets kicked back. I’ve seen it happen. That page alone saves you a week of waiting.

Why OEM Part Numbers Matter for the LG400

Aftermarket parts catalogs copy from older editions or guess at interchangeability. They mix up the left and right handlebar grips. They list a belt that’s 2mm too short. Then you install it, the tensioner bottoms out, and you’re chasing vibrations that aren’t from the plate compactor – they’re from your own fist hitting the bench. The Dynapac LG400 Parts Catalog is the direct output from Dynapac (part of the Atlas Copco Group). Every part number in here was verified by the engineers who designed the machine. If they changed a bearing supplier mid-production, the catalog lists the supersession. You can’t get that from a reprinted PDF that was scanned from a 2005 copy.

For related equipment, check the Dynapac PL2000LS Parts Catalog (258 Pages) – OEM Factory Spec – it covers the cold planer with the same level of detail. Or the Dynapac PL2000LS Parts Catalog – Factory OEM Specs for Cold Planer if you need specs for that model.

How to Order Spare Parts Correctly

Page 4 contains the order form template. Write it down every time. You need: type of machine (LG400), roller serial number (stamped on the frame tag), quantity, part number, denomination (what the part is called), and dimensions if you’re buying by length (e.g., hydraulic hose cut to length). If you skip the serial number, you risk getting parts for an older revision. The serial number range that this catalog covers starts at 34000001. Check yours before ordering. I’ve had guys call me saying the catalog didn’t list their engine, then they realized their serial number was from a later production run. Dynapac also includes a “Valid from serial number” field in the front matter – pay attention to it.

3 Engine Options Covered in This Catalog

1. Honda GX390 – air-cooled, 13 hp, separate parts group with carburetor, ignition, and cylinder head details.
2. Lombardini 15LD 440 – the diesel option, with its own crankshaft, injection pump, and vibration isolator parts.
3. Both engine variants share the same base plate and handle assembly, but the mounting brackets differ. The catalog clearly marks which parts apply to which engine.

If you’re retrofitting one engine to the other, don’t guess. The mounting plate part numbers are different. Page 33 (approximately, without a numbered TOC) shows the engine group for the Honda. The Lombardini section starts a few pages later. You need the correct isolator kit for the diesel – it uses stiffer rubber to handle the extra torque. The catalog lists the isolator part number for each engine. No guessing.

What About Aftermarket Catalogs?

I’ll be blunt: aftermarket parts catalogs for the LG400 are a gamble. They often skip the “Valid from serial number” field, so you order a part that was superseded three years ago. They might list a generic vibration damping pad that fits ten different machines but doesn’t match the LG400’s bolt pattern. The OEM Dynapac LG400 Parts Catalog is printed by Dynapac (Atlas Copco). Every page is drawn to match the actual machine. The same principle applies across the Automotive Industry Overview – OEM documentation beats third-party copies. If you rely on a reprinted page that has the wrong belt length, you’ll waste three days and a rental fee. The 66 pages here cost less than one wrong part.

Does this catalog include torque specs?

No. This is a parts catalog, not a service manual. It identifies parts and assemblies. For torque values and adjustment procedures, you need the Dynapac LG400 service manual.

Can I use this catalog to rebuild the exciter assembly?

You can identify every part in the exciter – the bearings, seals, shaft, and eccentric weights – but you won’t find assembly tolerances or torques. Use it to order the correct bearing and seal kit, then get the service manual for the rebuild steps.

What if my LG400 serial number is after 34000001?

This catalog claims to be valid from serial number 34000001. If your machine is newer, call Dynapac dealer to verify if any parts changed. The catalog was published 2009-12, so later revisions might exist.

How do I find a part number for the handle grip?

Look in the “Handle” parts group. Each grip is listed with a part number and a diagram showing which side it goes on. The remarks column will note if the grip is handed left or right. Order both if you need a set.

Access the Factory Manual. Put it on your tablet or print it out. When you’re ordering parts for the LG400, open this catalog first. Match the part number to the exploded view. Write down the serial number. Then call your dealer. That process takes ten minutes and saves a return shipment. I’ve been turning wrenches for 28 years, and I still use OEM catalogs. This one is worth the digital space.