Description

GEHL 603 2009 Parts Catalog – Factory OEM Manual

If you are ordering parts for a GEHL 603 compact excavator, you need the right numbers the first time. I have been inside more Tier II and Tier III engines than I can count, and aftermarket parts catalogs have sent me the wrong seal more than once. This GEHL 603 2009 Parts Catalog is the factory-issued document — 228 pages of exploded views, part numbers, and serial number breaks that match what the dealer uses. You chase a cylinder head gasket? It is on page 16. Crankshaft and piston assembly? Page 28. You get the exact reference number from the illustration, not some third-party guesswork.

Diesel Engine Parts Breakdown

The Diesel Engine section starts on page 12, covering the complete power unit. From engine mounts (page 14) to the cylinder block (page 20) and the seal, crankshaft (page 22), this catalog shows you every bolt, gasket, and o-ring in factory order. The OCR excerpt confirms the manual uses metric torque values in Newton-meters, with a conversion to foot-pounds by multiplying by 0.738. Standard attaching hardware torque values are listed near the back. Do not skip that page — it saves you from snapping a bolt in the block. I have seen it happen when guys trust aftermarket charts.

What Serial Number Range Does This Cover?

This catalog covers GEHL 603 models with serial number ranges: Engine Tier II Models AC02513 to AD07207, and Engine Tier III Models AH00645 and up. The introduction explains how serial number breaks are annotated: (SN 999 and before), (SN 1000 – 2000), (SN 999 and up), and even exceptions like “(SN 999 and before except 997)”. You match your machine’s serial plate to the correct parts list. No guessing — if your unit falls outside these ranges, look for the matching GEHL 603 2006 Parts Catalog – OEM Factory Manual or the GEHL 503Z, 603 2011 Operators Manual – Factory OEM.

228 Pages of Factory Specs

Two hundred twenty-eight pages. That is what you get, bound as an original OEM print. The table of contents runs from Decal Locations (page 4) through Tools/Service Kits, Filters, Gaskets and Seals, Battery, and all the way to the Relay Box and Horn sections. Each part is illustrated in an exploded view with a reference number. If the reference number is circled, that indicates a complete assembly. A small bag icon in the drawing means a seal kit is available. You want the hydraulic pump internal parts? Section 69. Control valve segments? Sections 74 and 76. This catalog does not leave anything out.

Order Parts Without Guesswork

When you call a dealer, they ask for the part number, full description, quantity, model, and serial number. This manual gives you that data. For example, the Cylinder Head & Valve Cover section (page 16) includes every cap screw, gasket, and valve component with its specific part number. The same goes for the Oil Pan (page 24), Camshaft (page 26), and Lubrication section (page 30). If you need to replace a fuel injection component, section 34 lists the injection pump and injectors. I keep a copy in my toolbox — it eliminates the back-and-forth with parts counters.

Cylinder Head & Valve Cover: Section 16

Page 16 of this catalog covers the cylinder head assembly and valve cover. If you are rebuilding a GEHL 603 engine, you need the correct head bolts, valve stem seals, and rocker arm parts. The exploded diagram shows each piece with its reference number. Note that unless otherwise specified, all cap screws and bolts are Grade 8.8, cadmium or zinc plated. That is important for retorque procedures. The catalog also includes the required tool lists and service kit references in the Tools / Service Kits section (page 8).

For an authoritative overview of how diesel engines operate, see this Wikipedia article on diesel engines. It gives you the theory; this catalog gives you the parts numbers.

Related Manuals

• GEHL 503Z, 603 2011 Operators Manual – Factory OEM
• GEHL 603 2006 Parts Catalog – OEM Factory Manual
• GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog

Frequently Asked Questions

Does this parts catalog include torque specifications for the cylinder head?

Standard attaching hardware torque values are provided near the back of the manual. Metric torque values shown in illustrations are in Newton-meters, converted to foot-pounds by multiplying by 0.738. The cylinder head section on page 16 references those values.

Will this manual work for my GEHL 603 with a Tier III engine?

Yes, if the serial number is AH00645 and up. Check your serial plate.

How do I find the right part number for a leaking hydraulic hose?

Look in the Hydraulic Oil Tank Hoses section (page 66) or the Control Valve Fittings (page 73). Each hose is identified by reference number and part description. Match your serial number range.

Is this a reprint or a scanned copy?

This is a digital access of the original factory PDF, direct from the OEM. No aftermarket modifications. Form number 918072, Revision E, September 2009.

Stop wasting money on wrong parts and wasted time. Access the Factory Manual and get the exact OEM data your shop needs.