Description

GEHL SL4640E, SL4840E, SL5640E, SL6640E, 2076 2007 Service Manual

If you’re tearing into a GEHL SL4640E, SL4840E, SL5640E, SL6640E, 2076 2007 Service Manual machine with dual joystick controls, you already know the factory book is the only thing that keeps you from chasing hydraulic ghosts. Aftermarket PDFs from some forum? Toss ’em. You need the actual OEM procedure – the one that tells you exactly how many thread-cutting screws hold that rubber boot flange (five, by the way, Fig.xa03) and why skipping the mandatory safety shutdown will earn you a trip to the ER.

This is the factory service manual addendum, Form No.xa0917231, Rev.xa0B dated 02/07. It’s 50 pages of pure GEHL and Mustang documentation. It covers the dual joystick control system and electrical auxiliary hydraulics for the SL4640E, SL4840E, SL5640E, SL6640E, and the Mustang 2076 and 2086 loaders. Nothing more, nothing less. If you need engine overhaul data or brake specs, that’s in the base manual – this is the addendum that fills the gap on the joystick side.

Remove the Control Cover Without Breaking Anything

The manual walks you through the floor cover and control cover removal with part numbers and torque hints. Step 1: three screws securing the sound pad to the control cover (Fig.xa02). Step 2: five thread-cutting screws holding the rubber boot flanges. Step 3: two machine screws securing the control cover to the crossmember. Step 4: two locknuts and two machine screws for the floor cover. The manual draws attention to the fact that two locknuts at the front of the floor cover are not shown in Fig.xa04 – that’s the kind of detail you only get from an OEM source. Aftermarket reprints would leave you hunting for those fasteners.

Page 6 is where the cover removal procedure lives. Use it. I’ve seen guys rip the rubber boot trying to pry the cover off because they didn’t realize those five thread-cutting screws were still holding the flange. This manual saves your parts budget.

Does This Manual Cover the Mustang 2076 and 2086?

Yes. The title includes “Mustang 2076 and 2086 Skid-Steer Loaders” right on the cover. The OCR excerpt clearly lists both models. If you own a Mustang 2086, the exploded views in Fig.xa09 show the 6640 and 2086 dual joystick traction controls, which are essentially the same layout. The electrical auxiliary hydraulics section applies across all models. I’d still cross-check your serial number against the equipment identification section on pagexa07, but you’re covered.

Mandatory Safety Shutdown Procedure

Every tech I’ve trained starts by reading the safety section – because one mistake and you’re pinned. This manual spells out the mandatory safety shutdown procedure in plain language: lower the lift arm, engage the lift arm support device, turn off the engine, remove the key, and wait for all moving parts to stop. Fig.xa02 shows the sound pad removal, but the shutdown is on pagexa02 of the PDF. Don’t skip it. I don’t care how fast you think you are – the loader doesn’t care either.

50 Pages of Factory Spec Data – No Aftermarket Guesswork

You get 50 pages of direct-from-GEHL content. That’s not a bloated “complete service manual” with fluff – it’s a focused addendum for the dual joystick system. The table of contents includes General Information, Signal Words (DANGER, WARNING, CAUTION), Additional Safety Reminders, Control Cover removal, Introduction, Joystick Controls, Two-Speed Control, Hydraglide^™ Ride Control, Float Control, Electrical Auxiliary Hydraulics, and control handle assembly removal/installation. Each section has figure callouts. Every hose, screw, and connector is referenced to a diagram. Aftermarket manuals skip this level of detail because they’re photocopying a third-generation reprint. This is the original factory file – clean, readable, and accurate.

For parts identification, pair this addendum with the official parts catalogs. See the GEHL SL4640 SL4840 SL5640 2009 Parts Catalog for breakdowns of every nut and bolt. Or use the GEHL SL4640E SL5240E 2010 Parts Catalog if you’re working on a later production run. The GEHL SL5640E SL6640E 2010 Parts Catalog covers the larger frame machines. These are all factory PDFs, not aftermarket junk.

Hydraglide Ride Control: What the Manual Tells You

The manual explains the Hydraglide ride control system – a feature that dampens boom oscillation when traveling. It’s not a simple on/off switch; there’s a specific valve logic. The electrical auxiliary hydraulics section (Fig.xa05) shows the control locations on the dual joystick panel. If you’ve ever had a customer complain about the ride control not engaging, the troubleshooting path starts here. The manual doesn’t give you a generic “check the fuse” – it points you to the joystick handle assembly and the electrical connector underneath the crossmember. You’ll be pulling the right drive stand cover (four tapping screws, Fig.xa015) to access the grip wiring.

If you’re coming from a background in Manual Transmission diagnosis, the hydraulic pilot logic here is different. The joystick hoses connect to a tandem pump (Fig.xa010) and to the control valve at front and rear (Figs.xa011 andxa012). Mark your hoses with port numbers – the manual tells you to do that in stepxa05 of the control handle removal procedure. I’ve seen guys skip the marking and then spend an afternoon swapping hoses trying to get the lift and tilt to work correctly. Don’t be that guy.

For a broader understanding of skid-steer hydraulics, read up on Manual Transmission systems? Not directly related, but understanding how a manual transmission shifts load can help you visualize the valve sequencing. The manual itself keeps you on track with factory steps.

Will this manual work for the SL5240E?

No. The SL5240E is not listed in the title or table of contents. You need a different addendum for that model.

What exactly is included in the 50 pages?

Safety procedures, control cover removal, joystick handle assembly removal/installation, electrical auxiliary hydraulic diagrams, and exploded views for all joystick controls on SL4640E, SL4840E, SL5640E, SL6640E, Mustang 2076, and 2086. No engine or powertrain data – those are in the base service manual.

Is this a complete service manual or just an addendum?

It is the service manual addendum for dual joystick controls. You must have the base service manual for the loader (covering engine, transmission, brakes) to have a full set. This addendum supplements that base manual with the specific joystick control procedures.

How are the torque specs presented?

Torque values are referenced within the removal/install procedures where fastener sizes are given. The manual doesn’t have a separate torque table; specs are listed inline. For example, the capscrews securing the joystick control handle assembly (six of them, Fig.xa013) give the torque when reinstalling. Follow the factory numbers – don’t guess.

This manual sits on my bench next to the laptop. When a SL6640E comes in with a sticky right joystick, I open this PDF to pagexa0… well, the control handle removal procedure. Every time, the answer is in the book. You need that same confidence. Access the Factory Manual now – it’s the same file I use.