Lull LD-50, LL-40 1985 Parts Catalog – OEM Factory Manual

If you’re wrenching on a Lull LD-50 or LL-40 from 1985, you need the actual factory parts breakdown, not a third-party reprint that guesses at part numbers. This Lull LD-50, LL-40 1985 Parts Catalog is the same binder that rolled off the Lull line in June of ’85 – 255 pages, spiral-bound logic, and every figure drawn to the spec the assembler used. I’ve seen aftermarket manuals that call a 52-212-3 decal “stripping” when the factory clearly lists it as “Stripping” on page 1. That kind of mistake costs you time and money when you order the wrong part. This catalog eliminates that guesswork.

255 Pages of Factory Diagrams and Part Listings

Every page in this manual is a direct scan from the original Lull press. The Table of Contents alone runs from Figure #1 Decals and Parts Assembly (page 6) through Figure #21 Deutz wiring schematic (page 114). The index on page 8 gives you reference numbers and page numbers for every assembly – cab, shields, drivetrain, engine mounts, you name it. Need the part number for the pressurizer assembly? Page 22 has the A-30812 breakout. Want the Deere 31640 diesel engine installation? That’s page 36. The catalog doesn’t skip sections; it covers the Continental TM27 gas engine installation (page 46), the Deutz 3FL912 diesel (page 40), and the Deere installation (page 38). Each engine section includes separate installation and alternator pages – something aftermarket catalogs often merge into one messy drawing.

Engine Installations Covered: Deere, Deutz, Continental

This catalog devotes 16 pages to engine installations alone. Starting at page 36, you get the Deere 31640 diesel engine installation with a full parts list. Page 38 gives the Deere engine installation (likely a variant). Then the Deutz 3FL912 diesel engine installation on page 40, followed by the Deutz engine installation on page 42 and the alternator installation on page 44. Finally, the Continental TM27 gas engine installation on page 46 and its installation page on 48. Each one shows the engine mount brackets, the cooling lines, and the correct fastener callouts. The parts list on page 8 references these sections with figure numbers – 8 for Deere, 8 for Deutz, 8 for Continental. If you’re swapping an engine or rebuilding one, this is the only way to get the correct part numbers for the oil pan, flywheel housing, and alternator bracket.

Decals and Parts Assembly: Page 1 Data

Figure #1 on page 1 lists every decal and caution plate that came on the LD-50 and LL-40. Part numbers like 52-212-3 (Stripping), B-31128-01 (Decal, LD-50), and A-30832 (Decal, LL-40) are spelled out with quantities. The note at the top: “Read and observe all warnings on the unit before operating it.” That warning is on the unit itself, but if the decal is missing, this manual tells you exactly which one to order. The gold paint (part number not listed but referenced) and spray cans are also included. This section matters because safety decals are not optional – if you’re restoring a Lull for resale or site use, missing decals can get you flagged during inspection.

Wiring Schematics: Deutz and Deere

Two wiring diagrams are included: Deere wiring assembly schematic on page 113 and Deutz wiring assembly schematic on page 114. These are specific to the engine packages. Wire colors, connector part numbers, and routing are shown. If you’re chasing an electrical issue that’s causing the ether injection system (A-14824, page 56) not to fire or the dash assembly (page 32) to read incorrectly, these schematics are your map. Generic wiring diagrams from a Chilton’s won’t match the Lull harness layout – the cab pressurizer assembly (page 22) routes wires differently than a standard forklift. This catalog shows the factory routing.

Who Needs This Manual?

If you own an LD-50 or LL-40 – whether it’s a Lull, a Manito, or a Prime-Mover badged unit – and you’re doing any tear-down for repair, restoration, or part replacement, you need this catalog. Home garage guys who buy these at auction often find missing parts or swapped components. Without the factory part numbers, you’re either measuring and guessing or buying from someone who claims it fits. I’ve had a dozen calls from guys who ordered a “rear window assembly” from a supplier and got the wrong frame because they didn’t know the part number referenced on page 20. The catalog also covers the cradle installation assembly (page 110), which is critical if you’re replacing the boom cradle. That section alone saves hours of cross-referencing.

Source Validity: OEM vs. Aftermarket

This is an original OEM parts catalog from Lull, issued June 1985. The manual part number is 31393002. It was printed for the LD-50 and LL-40 models, including the Manito and Prime-Mover variants. Aftermarket parts catalogs for these units are often compiled from later revisions, sometimes missing the early production differences. The page numbering and figure references in this manual match exactly what Lull used in their assembly line. When a part appears in multiple assemblies (like the B-31179 single caliper brake caliper on page 82 and the A-31097 master cylinder on page 80), the manual cross-references them by figure number. Aftermarket catalogs don’t do that – they list parts in alphabetical order with no context. This manual lets you see the part within its assembly, which is the only way to confirm you’ve got the right component.

Related Manuals

• Lull L-812 1983 Parts Catalog – OEM Factory Parts Breakdown
• Lull LD50, LL40 1985 Parts Catalog – OEM Factory Specs
• Lull 944E-42 644E-42 2009 Parts Catalog – OEM Factory Manual

For broader industry context, Automotive Industry Overview give you a sense of how these machines fit into the heavy equipment world. Also check Automotive Industry Overview for standards.

Does this manual cover the LD-50 with a Continental gas engine?

Yes. The manual includes the Continental TM27 gas engine installation on pages 46-48, as well as the Deere and Deutz diesels. The parts list covers both gas and diesel air cleaner assemblies (pages 50-52).

Are the part numbers in this manual still current?

Many of these parts have superseded numbers. Lull changed hands multiple times (acquired by Manito, then by JLG, now part of Haulotte), so original Lull part numbers may have been replaced. However, the OEM catalog gives you the base number that any dealer or parts house will recognize. For example, the A-31097 master cylinder assembly on page 80 is still available under that number from some sources. If a part is discontinued, the cross-reference from this catalog helps you find a replacement using the same fastener threads, bore sizes, and overall dimensions. Without the OEM number, you’re shooting in the dark.

This catalog is not a reprint, not a copy – it’s the original factory document. If you want to order parts, rebuild an engine, or replace a cracked cab shield, you need the exact factory data. Download the Factory Manual and stop relying on forum posts that might be wrong.