Description

JLG L2906H, 2906H, 3507H, 619A, 723A 2011 Service Manual

If you’re turning wrenches on a JLG L2906H, 2906H, 3507H, 619A, or 723A and you don’t have the factory service manual, you’re flying blind. I’ve watched guys snap bolts on boom cylinders using generic torque charts from the internet. That’s how you turn a routine job into a 100-hour mess. This is the 2011 OEM JLG L2906H, 2906H, 3507H, 619A, 723A 2011 Service Manual – 208 pages of exact factory procedures. No guesswork. No aftermarket garbage.

Section 2 Torque Specs – SAE and Metric Fastener Charts

Page 2-3 in this manual has the torque charts JLG signed off on. SAE and metric fastener torque values, plus a dedicated hydraulic hose torque chart. You want to torque a boom pivot bolt? That chart tells you the ft-lbs for that specific grade of fastener. I keep a copy of this page laminated in my toolbox. Don’t walk up to a job thinking your memory of a generic chart is good enough – it’s not.

What’s the Boom Removal Procedure?

Section 3 covers the boom system for all models. If you need to pull the boom off a 619A or 723A, you follow the sequence on page 3-9: boom removal, second section boom removal, and the extend/retract cylinder work. Each step lists the required tools – and the safety warnings are right there in red. Never skip the boom prop procedure (Section 3.8). I’ve seen a boom drop on a tech because he thought he could hold it with a floor jack. Read the manual.

Get the Right Hydraulic Cylinder Performance Data

Section 2.3.2 gives you hydraulic cylinder performance specs – bore diameter, stroke, and operating pressures. If you’re rebuilding a lift cylinder on a 2906H, you need those numbers to set the relief valve correctly. This manual spells them out in imperial units: psi and inches. Don’t trust aftermarket rebuild kits that claim “fits all” – they don’t.

Transmission: Factory Replacement Procedure

Section 6 walks through the transmission removal and installation for every model listed. Transmission specifications on page 6-3 include fluid capacities and torque values for the bellhousing bolts. If you’re pulling a transmission on a L2906H, you need the Manual Transmission section in this manual – it’s specific to the JLG powertrain. For general background on how a Manual Transmission operates, that’s your own study. But when you’re under the machine, use the factory step-by-step.

7 Systems Covered in This 208-Page Manual

Safety practices (Section 1), general specs and maintenance schedules (Section 2), boom (Section 3), cab and covers (Section 4), axles/drive shafts/wheels/tires (Section 5), transmission (Section 6), and a full wiring diagram section. That’s seven main sections. Each one contains disassembly, inspection, and assembly instructions with part numbers. This is the same binder JLG dealers use.

Who Needs This Manual – And Who Doesn’t

If you’re a DIY owner who services your own 3507H or 723A, you need this. The 10-hour and 50-hour lubrication schedules in Section 2.6 tell you exactly which grease fitting gets what. If you’re a shop owner with a fleet of JLG units, this manual pays for itself on the first transmission job. Beginners: don’t attempt boom removal without reading Section 3.9 on emergency boom lowering first. That section could save your life.

Factory JLG vs Aftermarket Reprints

This is a direct scan of the original JLG publication (part number 31200568, revised March 7, 2011). It carries the JLG copyright and all the OEM warnings. Aftermarket manuals often omit the safety decal diagrams (Section 1.7) and the Loctite® application notes – JLG updated all Loctite® 242TM to 243TM in this revision. A third-party reprint won’t tell you that. Stick with the factory document.

Does this manual cover the 29.6LP and 35.7 models?

Yes. The effectivity page lists models L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, and 35.7. The 208-page manual includes all updates from the March 2011 revision B.

Are the wiring diagrams in color?

No. The diagrams are black-and-white factory line drawings with component callouts. That’s standard for JLG service manuals. If you need color diagrams, you’re reading the wrong document – but these schematics are accurate enough to trace a short on a 619A in 20 minutes.

I’ve been turning wrenches for 28 years. When I train a junior tech on a JLG machine, I hand them this manual and tell them to read the task they’re about to do before they touch a tool. It cuts rework and keeps everyone safe. You want the same advantage? Access the Factory Manual from AutoRepairManuals. Also check the JLG L2906H, 2906H, 3507H, 619A, 723A 2014 Parts Catalog for part numbers, the JLG RS10 2013 Service Manual – Factory Specs & Diagnostics for a different model, and the JLG 544D-10 2007 Service Manual – 392 Pages OEM Factory Specs for older units. Get the factory data.