Description

Deutz F3M 2011F, BF3M 2011F, F4M 2011F, BF4M 2011F, SL4640 2005 Service Manual

If you’re tearing into a Deutz 2011F series engine – whether it’s the F3M, BF3M, F4M, or BF4M – and you don’t have the factory book in your hand, you’re guessing. And guessing on a cylinder head fastening sequence or a camshaft timing event costs you time and parts. I’ve seen it a hundred times. A shop down the road lost a whole engine because they used an aftermarket torque chart for the Deutz F3M 2011F, BF3M 2011F, F4M 2011F, BF4M 2011F, SL4640 2005 Service Manual engine family. Snapped head bolts. Leaked coolant. Wasted weekend. This manual is the real deal – printed in 2005, 86 pages, straight from the OEM that built the engines for Gehl skid-steer loaders. No reprints, no third-party edits. Just the factory data you need.

Cylinder Head Fastenings: Torque Procedures and Sequence

Page 17 covers the cylinder head fastenings – not just a torque value, but the tightening sequence and step increments. For the BF4M 2011F you need the exact angle after initial torque. The manual lists fasteners by part number, not generic cap screws. If you’re reusing bolts, check the length specs listed on that page. Don’t trust a generic chart from a forum.

Camshaft Drive and Valve Timing

The camshaft drive section (page 20) shows gear alignment marks and backlash tolerances. The valve drive (page 24) includes rocker arm bracket torque and clearance for both intake and exhaust valves. On a BF3M 2011F, incorrect valve lash can bend pushrods inside 20 hours of operation. This manual gives you the cold and hot specs in inches and degrees.

Fuel Injection Pump and Injector Service

Fuel injection pump removal and install are on page 34. The injector section (page 36) includes pop pressure and spray pattern requirements. For the SL4640 loader, the injection timing is critical – the manual marks the flywheel and pump flange. High-pressure pipe routing is on page 42; use the exact bend angles shown or you’ll get a fuel leak that won’t seal.

Crankshaft and Connecting Rod Assembly

Crankshaft page 10 includes main bearing journal diameter and end play limits. Connecting rod (page 14) gives the big-end bore tolerance and the bolt stretch specification. The piston section (page 15) lists ring gap ranges and pin location. If you’re rebuilding an F4M 2011F without these numbers, you are putting a grenade together.

One section I see skipped often is the oil pump and filter fastenings (pages 25-26). The lubrication oil pump gear backlash matters. The filter base bolts need a specific torque – overtighten and you crack the housing. Page 26 has the exact values in ft-lbs.

Turbocharger and Charge Air System

The turbocharger section (page 53) covers the oil supply and return lines, and the charge air elbow (page 48) and pipe (page 49) show clamp torque and alignment. For the BF4M 2011F, the wastegate actuator adjustment is given on page 55 under Torque Capsule. Miss that and you’ll overboost, melt a piston.

Source Validity: OEM vs Aftermarket

This is the 2005 edition published by Gehl under Form 917108 Revision B. The serial number ranges are printed on page 1: F3M 2011F above 0654097, BF3M above 0590544, F4M above 0529127, BF4M above 0550682. The parts listed are genuine OEM numbers – not aftermarket cross-references that might fit wrong. If you’ve ever tried to match a camshaft using a third-party catalog, you know the headache. This manual eliminates that guesswork.

Factory spec. Period.

Who Needs This Manual

If you run a shop that services Gehl SL4640, SL4840, SL5640, or SL6640 skid-steer loaders, you see these Deutz engines weekly. The DIY owner who does his own maintenance on a SL4640 will save the cost of the manual the first time he avoids a head gasket failure. Beginners: don’t open the valve cover without this book. The instructions assume you know the difference between a socket and a wrench, but the torque and part data are foolproof if you follow them line by line.

Related Manuals

• DEUTZ FAHR Agrovector Operation & Safety Manual
• Deutz-Allis 6240-6275 1990 Service Manual
• SAME Deutz FAHR EXPLORER3 90 & 105 2012 Operators Manual

External Reference

For background on manual transmission principles relevant to the PTO (Power Take-Off section, page 11), see Manual Transmission and Manual Transmission on Wikipedia.

Does this manual cover the SL4640 skid-steer loader?

Yes. The introduction (page i) specifies the F3M and BF3M 2011F engines used in SL4640. The F4M and BF4M are for SL4840, SL5640, and SL6640. The manual applies to all those loader models.

What torque specs are included for the cylinder head?

Page 17 lists the fastening sequence and torque in ft-lbs and angle degrees for each engine variant. You cannot find these values in a generic diesel manual.

Can I use this for the BF4M 2011F with serial number 0550682 and later?

Yes. The manual explicitly covers BF4M 2011F engines with serial number 0550682 and later. Check your engine plate on the valve mechanical cover.

How is this different from aftermarket manuals?

Aftermarket manuals often copy old data or use generic torque ranges. This is the original OEM 2005 print with exact part numbers, updated serial number ranges, and factory tolerances for every component from the crankshaft to the fuel injector. There is no substitute.

Everything you need to rebuild, service, or repair a Deutz 2011F series engine is in these 86 pages. Access the Factory Manual and keep it on your bench. It’s the one reference that won’t steer you wrong.