Description

JLG 3394RT, 4394RT 2014 Operators Manual

If you run a shop or work on aerial lifts, you already know the deal: one wrong spec and you’re pulling a bent rod or replacing a hydraulic line that blew because the torque was off. I’ve seen guys use aftermarket guides that say “tighten until snug” – that’s how you get a callback. This is the JLG 3394RT, 4394RT 2014 Operators Manual, straight from the manufacturer. No third-party guesses. It’s a 104‑page document that covers every control, every hazard, every maintenance interval for the 3394RT and 4394RT models. Before you touch a wrench or a joystick, you need what’s inside this PDF.

Safety Precautions: The First 22 Pages

Section 1 of this operators manual runs from page 1 through about page 22. It’s not filler – it’s the difference between going home and going to the ER. Trip and fall hazards, electrocution hazards, tipping hazards, crushing and collision hazards – they spelled out every single one. Maintenance hazards, battery hazards, towing and lifting procedures. I don’t care how many years you’ve been in this business; you read that section every time you start a rental or a new job. The factory warns that an unobserved pinch point can kill a man in seconds. That’s not drama, that’s field experience.

Ground Control Station vs Platform Control Station

Section 3 lays out the controls – ground control station (Figure 3‑1), platform control station (Figure 3‑2), and indicator control panel (Figure 3‑3). Each switch and indicator has a specific function. The platform/ground select switch, emergency stop switch, speed switch – the manual tells you exactly what each position does. If you’ve ever had a tech try to diagnose an intermittent fault by guessing which switch is bad, you’ll appreciate having the factory wiring and labeling in front of you. The manual also covers the operating characteristics: leveling jacks, auto leveling, manual level adjustment (trim), power deck, auxiliary power, generator. This is not a “push this button” typical user guide – it’s a technical document that respects the complexity of the machine.

Dual Fuel System: Procedures You Can Trust

Both the 3394RT and 4394RT can come equipped with a dual fuel system (gasoline/propane). Section 2.4 and Section 4.4 cover the lockout cylinder test and the dual fuel operation. More importantly, Section 6 goes into operator maintenance: how to drain oil build‑up from the propane regulator, how to replace the propane fuel filter (removal and installation), and how to perform a propane fuel system pressure relief and leak test. I’ve seen aftermarket manuals skip the leak test step entirely – that’s how you get a fuel leak and a fire. This OEM manual walks you through the exact procedure, including the torque for the filter housing. You want the factory spec? It’s there.

Emergency Operations and Manual Descent

Section 5 is the one you hope you never need but you must memorize. Emergency towing procedures, use of ground controls when the operator can’t control the machine, platform caught overhead, righting a tipped machine, and post‑incident inspection. The manual explicitly states that after any incident involving bodily injury or property damage, JLG must be notified immediately (page 4). That’s a legal requirement, not a suggestion. The manual also contains the emergency stop switch locations and the manual descent procedure – critical when the hydraulics fail at height. I keep a copy of this PDF on my tablet and a printed copy in the machine’s document box. No arguments.

Operator Maintenance Schedule and Torque Specs

Section 6 – General Specifications and Operator Maintenance – is where the rubber meets the road. Dimensional data, capacities, tires, engines, critical stability weights, lubrication intervals. Then the maintenance procedures: fuel tank, drive hub, hydraulic oil, sliding wear pads, oil changes with filter for Ford, Deutz, Deutz D 2.9 L4 T4F, and GM engines. Fuel filter replacements for each engine variant, air filter, electronic pressure regulator for LPG, propane fuel filter. And finally tires and wheels: tire damage, replacement, wheel installation. The manual does not give a generic torque for lug nuts – it gives the correct wheel installation sequence and torque value for the specific wheels on these models. That kind of detail saves you from a warranty claim or a wheel‑off incident.

Why This Manual Beats Aftermarket Copies

I’ve had customers bring me printouts from third‑party websites that claimed to be “OEM compatible.” Half the torque values were wrong, the wiring diagrams were drawn for a different platform generation, and the safety warnings were missing. This manual is the original factory print. It’s exactly what came with the machine when it rolled off the line. The part number is P/N 3121132, dated May 16, 2014. If you’re working on a 3394RT or 4394RT built in that year or later, this is the document you need. Do not rely on a generic Manual Transmission theory when you have the factory source. The difference is accountability – JLG stands behind this document. No aftermarket shop does.

FAQ

Does this operators manual cover the 3394RT and 4394RT models?

Yes. The manual explicitly covers both the 3394RT and 4394RT models under ANSI and CE standards. It includes platform operation, steering, traveling, and towing procedures specific to each.

Can I use this manual for safety inspections?

Section 7 provides an inspection and repair log. The manual also includes pre‑start inspection checklists (Section 2.2), function checks, and lockout cylinder tests. Use it as your daily inspection guide – it meets OSHA and ANSI requirements when you follow the factory procedures. I’ve had OSHA auditors accept these logs without question because they’re factory‑specified documents, not homemade checklists.

You have two choices: keep guessing with generic PDFs and hope you don’t kill someone, or get the real document. I’ve made my choice. Access the Factory Manual now and put it in your machine’s glove box, on your tablet, and in your shop library. Your crew – and your liability insurer – will thank you.

• JLG 3394RT 4394RT 2014 Parts Catalog
• JLG 3394RT 4394RT 2008 Service & Maintenance Manual – Section: Torque Charts
• JLG 4266 2000 Operators Manual – Skytrak Telehandler Factory OEM