Description

GEHL SL5635, SL6635, 5635 1999 Parts Catalog

Aftermarket parts catalogs get part numbers wrong. I’ve seen guys order a camshaft for a SL5635 based on a third-party PDF and end up with a piece that doesn’t match the gear train. That costs you a day and a hundred bucks in return shipping. This is the original 1999 GEHL SL5635, SL6635, 5635 1999 Parts Catalog – the same book the dealership counter uses. It covers the Deutz F4M1011F engine (GEHL part number 130321) used in SL5635SX and SL5635DX skid loaders before engine serial number 0275761. 66 pages of factory-sourced part numbers, exploded diagrams, and index.

If you’re rebuilding a Deutz F4M1011F in a SL6635 or 5635, you need the right piston, connecting rod, and gasket set numbers. Page 12 shows the connecting rod. Page 19 covers the Camshaft assembly. Aftermarket catalogs swap bearing sizes. This doesn’t.

Camshaft and Valve Train: Page 19 Reference

Look at page 19 for the Camshaft section. Opposite page 18 covers the Camshaft Drive. You get the exact GEHL part number for the camshaft, plus the rocker arm bracket (page 21), valve drive (page 22), and valve mechanical cover. If you’re replacing a camshaft in a SL5635, having the factory diagram means you see the thrust washer and gear orientation. I’ve torqued enough head bolts to know that a misidentified camshaft gear wrecks oil pump alignment. This manual eliminates that guesswork.

Engine Block and Rotating Assembly: What’s Listed

The table of contents includes ENGINE BLOCK (page 5), CRANKSHAFT (page 8), CRANKSHAFT ACCESSORIES (page 7), CONNECTING ROD (page 12), PISTON (page 13), FLYWHEEL (page 11). Each section lists the part number, description, and quantity. You need a piston for a 5635? Page 13 gives you the factory number. No cross-referencing. No calling the dealer to ask if the aftermarket part matches. The manual also includes CYLINDER HEAD FASTENINGS (page 15) and CYLINDER HEAD (page 16). If you’re doing a head gasket on a SL6635, you want the correct head bolt set. This catalog lists the fastenings individually.

Oil system is covered: LUBRICATION OIL PUMP (page 23), LUBRICATION OIL FILTER (page 24), OIL FILTER FASTENINGS (page 25), OIL SUCTION LINE (page 26), OIL PAN (page 6). The CRANKCASE BREATHER (page 4) is often overlooked. I’ve seen guys install the wrong breather and pressurize the crankcase. This manual gives you the right part.

Fuel System Coverage: From Pump to Injector

Fuel injection systems on Deutz engines are sensitive. The manual includes FUEL INJECTION PUMP (page 31), FUEL SUPPLY PUMP (page 32), FUEL INJECTOR (page 34), HIGH PRESSURE PIPE (page 38), FUEL LINE (page 37), OVERFLOW LINE (page 36), and FUEL SUPPLY PUMP. If you’re diagnosing a no-start on a GEHL SL5635 after a fuel pump replacement, you need to verify the correct pump part number. Aftermarket catalogs often list a generic number that doesn’t match the governor linkage. This catalog shows the exact pump configuration for your engine serial number range.

Cooling and electrical: RADIATOR CONNECTIONS (page 28), HEATER CONNECTION (page 27), ALTERNATOR (page 51), ALTERNATOR BRACKET (page 52), ALTERNATOR FASTENINGS (page 53), STARTER (page 50), GLOW PLUG (page 41). The GLOW PLUG section is critical for cold starting in San Antonio mornings – get the right plug or you’ll be pulling the intake manifold again.

Why a 1999 Factory Parts Catalog Beats Aftermarket

Third-party parts catalogs often copy old data, leave out revisions, or use generic illustrations. This is the factory OEM document from GEHL, Form No. 907764 Revision B 09/99. The introduction clearly states that part numbers may change and your GEHL dealer has the latest number. That’s honest. The manual includes a GASKET SET (page 59) section that lists the complete engine gasket kit – aftermarket sites sometimes split it into separate head gasket and manifold gasket sets, missing the valve stem seals. This manual shows you the full kit.

The INDEX (page 60) helps you find any part fast. Items without a part number are reference only. The manual also covers ADAPTER HOUSING, POWER TAKE-OFF, FRONT COVER/GOVERNOR, SHUTDOWN DEVICE, and TORQUE CAPSULE. If you’re swapping a PTO on a 5635, you need the adapter housing parts listed on page 49.

Audience Fit: Who Needs This 66-Page Manual

Home garage guys rebuilding a Deutz engine, shop owners maintaining a fleet of GEHL skid loaders, and mechanics who want to stop ordering wrong parts. The manual is specific to the F4M1011F engine used in SL5635 and SL6635 models before SN 0275761. It’s not a generic “fits-all” catalog. You get exploded diagrams with labeled part numbers. This makes it easier to identify what you need when you’re elbow-deep in grease.

For context on diesel engine basics, this Wikipedia article on diesel engines explains the injection cycle. But for ordering parts, you stick with the factory document.

Frequently Asked Questions

Does this manual include the serial number cutoff?

Yes. It covers engines before SN 0275761 only. Check your valve mechanical cover plate.

Does it list torque specs for the cylinder head?

The manual is a parts catalog, not a service manual. It gives part numbers for CYLINDER HEAD FASTENINGS (page 15) but not torque values. You need the service manual for specs.

Can I use this to order parts for a SL6635 with a later engine serial number?

No. The manual explicitly states it only covers engines before SN 0275761. Later engines may have different part numbers for the CAMshaft, fuel injection pump, and gasket set. Ordering based on this catalog could give you the wrong components. Check your engine serial number first.

What is the page count?

66 pages including the index and introductory notes.

Get the right parts the first time. GEHL SL5635 SL6635 1999 Engine Parts Book and GEHL 5635, 6635 1999 Parts Catalog – Factory OEM Skid Loader Manual are identical. Also see GEHL SL5635 SL6635 SL4635 SL4835 2005 Parts Catalog – OEM Engine Parts for later models. Access the Factory Manual.