Description

JLG 3394RT, 4394RT 2014 Parts Catalog

You have a JLG scissor lift in the bay with a blown hydraulic line, or a leaking steer cylinder, and you’re flipping through some third-party website trying to match a blurry photo. Half the part numbers don’t line up, and the other half are discontinued. I’ve been there. That’s why you need the JLG 3394RT, 4394RT 2014 Parts Catalog from the factory — not a reprint, not a scan of a scan. This is the exact PDF JLG issued February 7, 2014, P/N 3121134, covering machines prior to SN 0200191606.

Frame and Axle Breakdown – 2WD and 4WD

Section 1 opens with the frame. Figure 1-1 and 1-2 show the axle and steering installation for both 2WD and 4WD versions. If you need the drive motor/hub assembly, Figure 1-4 gives you the exploded view with every seal and bearing. Figure 1-5 covers the beacon light and the 4WD Valve installation mounted to the frame. The leveling jacks are in Figure 1-6. Everything is keyed to the part number index in the back — 212 pages of cross-referenced data.

Engine Installations Covered: Deutz, Ford, GM

Section 2 is where the Engine work lives. Figures 2-3 and 2-4 cover the Deutz engine and generator options. Figures 2-5 through 2-8 do the same for Ford and GM powerplants. If you’re swapping a generator or chasing a drive pump leak, the sub-assemblies are laid out in Figures 2-9 through 2-13. The ground control box and valve installations are broken down with callouts for every fitting. No guessing which o-ring goes where.

Hydraulic Diagrams and Valve Assemblies

Section 6 is pure gold for anyone who has ever wrestled with a hydraulic schematic drawn on a napkin. Figure 6-1 is the standard hydraulic diagram for 2WD, Figure 6-2 for 4WD. Figure 6-3 covers the leveling jack hydraulic circuit. The main control Valve assembly is detailed in Figure 2-2. When you need to trace a pressure line or identify a cartridge valve, these diagrams are the reference. The part number index lists every valve component — for example, part 0100011 appears on 28 different pages across the manual. That’s how thorough this thing is.

Source Authenticity: Why Factory OEM Beats Aftermarket

I’ve seen aftermarket parts manuals that show the wrong bolt length or omit a washer. This catalog came off JLG’s own servers. It’s the same document their dealer network uses. The revision log inside goes back to 2002, with every update tracked to a specific bill of material revision. If your machine falls in a serial number range that requires a different manual (like SN 0200186972 and up), the revision note on page 3 tells you exactly which P/N to use. That kind of traceability doesn’t exist in a scanned copy from a forum. For torque specs and service procedures, pair this with the JLG 3394RT 4394RT 2008 Service & Maintenance Manual – Section: Torque Charts. And if you need operator-level safety and daily inspection checks, grab the JLG 3394RT, 4394RT 2014 Operators Manual – Factory Safety & Specs. For other boom and scissor platforms, the JLG 8042, 10042, 10054 2012 Parts Catalog – Factory OEM Skytrak Manual follows the same factory format.

Every part number in this catalog is traceable. That matters when you’re ordering a $400 steer cylinder and need to know it fits prior to SN 0200137518. The notes are right there in the figure title.

Who Needs This 212-Page Manual?

If you own a JLG 3394RT or 4394RT scissor lift built before February 2014, this is your parts bible. Fleet managers use it to stock service parts — Section 9 lists recommended service parts stock by quantity and part number. Home garage enthusiasts who bought a used lift at auction will save weeks of cross-referencing. Even a dealership parts counter guy will pull this up when a customer walks in with a rusted tag. The audience is anyone who needs the right part the first time, without calling JLG support and waiting on hold.

For more context on the construction equipment industry and how OEM documentation standards evolved, the Automotive Industry Overview provides background on supply chain documentation. The Automotive Industry Overview is also a worthwhile read for understanding part numbering systems.

FAQ

Does this catalog cover both the 3394RT and 4394RT?

Yes. The manual covers both models with separate figures where they differ, such as scissors arms (Figure 3-1 for 3394RT, 3-2 for 4394RT).

Will it work for my machine built after SN 0200191606?

No. This edition covers machines prior to SN 0200191606. For newer units, JLG released later revisions. Check the revision log on page 3 for specific serial number cutoffs like SN 0200186972 where a different manual P/N applies.

Are torque specs included?

Torque values are not listed in a parts catalog. This manual provides part numbers and exploded views only. For torque specs, use the service manual listed in the related products section above.

What if I need a part that shows 30 different page references in the index?

Use the part number index (Section 11) which lists every occurrence. For example, part 0100011 appears on pages 1-3, 1-7, 1-21, 2-3, 2-4, 2-10, 2-11, 2-12, 2-17, 2-23, 2-31, 2-37, 2-41, 2-45, 2-63, 2-68, 4-3, 4-6, 4-10, 4-20, 5-3, 5-5, 5-7, 5-13. Cross-check each figure to confirm the exact application.

That’s the difference between a parts catalog and a parts guess. The OEM factory diagram shows you exactly which bolt goes where, with the correct part number linked to JLG’s supply chain. Stop wasting time on generic websites that re-label components. Access the Factory Manual from AutoRepairManuals and get the right part numbers on your bench today.