Description

GEHL 303 2008 Parts Catalog – The Only Parts List You Should Trust

If you’ve ever tried to order a part for a GEHL 303 compact excavator using a generic aftermarket parts list, you already know the frustration. Wrong numbers, missing revisions, bolts that don’t fit. That’s why the 2008 GEHL 303 Parts Catalog — the official factory document — is the only thing I trust on the bench. 158 pages of exploded views, part numbers, and torque specs that come straight from GEHL’s engineering. No third-party guesswork.

Torque Specifications: Where the Real Work Starts

Page 26? Actually, the torque table is tucked near the back of this manual — standard attaching hardware torque values for Grade 8.8 bolts. Metric values are shown in Newton-meters; multiply by 0.738 to get foot-pounds. The manual tells you right there in the introduction. Too many guys skip this, then wonder why a bolt strips or a joint leaks. GEHL didn’t hide this information; they made sure it’s in there. Use it.

Alphabetical Index: Finding Parts Without the Headache

Two alphabetical indices cover A–M and O–W. Plus a numerical index. That means you can look up a part by name or by existing part number — either way, you land on the correct exploded view. No flipping through pages hoping the aftermarket catalog guessed the same grouping. The manual organizes everything by assembly, so if you need the final drive seals, you go to that section, not some random “seal kit” entry.

Does This Manual Cover Tier I and Tier II Models?

Yes. The serial number range is spelled out: Engine Tier I models from AD00001 to AD01819, and Tier II from AD01820 to AE02400. The introduction explains exactly how to read serial number breaks — inclusive, exclusive, the works. If your machine falls in that range, this Parts Catalog matches. If it doesn’t, you need a different revision. Simple.

3 Sections That Separate OEM from Aftermarket

First, the torque specification table — aftermarket catalogs never include fastener torque because they just copy exploded views without context. Second, the alphabetical index plus numerical index — try finding a part number in a third-party PDF; you get a text search that misses the drawing number. Third, the serial number break system — GEHL marks exactly which parts changed at which serial number. Aftermarket reprints blur those lines or skip them entirely. That’s what costs you a Saturday afternoon and a return shipping fee.

Introduction: What GEHL Expects You to Know

The first two pages tell you: order by part number and serial number, use only genuine GEHL service parts, right and left are from the operator’s seat facing forward. Also lists abbreviations — ASSD for assembled, AR for as required, CS for cap screw. A small bag icon in the illustrations means a seal kit. That kind of detail keeps you from ordering individual o-rings when a bagged kit is cheaper and faster. For background on the engine family itself, check out this Wikipedia article on diesel engines. And for a deeper dive into how diesel power works, this Wikipedia article on diesel engines covers the fundamentals.

FAQ

Can I use this parts catalog for a 2010 model GEHL 303?

No, this is a 2008 publication covering serial numbers up to AE02400. Later machines had different revision letters.

How do I convert the metric torque values to foot-pounds?

The introduction on page 2 states: metric torque values in the illustrations are in Newton-meters and are converted to foot-pounds by multiplying by 0.738. For example, 100 N·m × 0.738 = 73.8 ft-lb. That’s for standard attaching hardware. Always cross-reference the fastener grade shown in the illustration — the manual uses Grade 8.8 cap screws unless otherwise noted. If you’re working on a hydraulic component, check that section’s specific torque because some assemblies have their own callouts that override the general table.

Related manuals you might need in the shop: GEHL 303 Compact Excavator Parts Catalog, GEHL 253 303 353 373 2011 Operators Manual – Factory Specs, GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog.

Stop wasting time with aftermarket reprints that miss serial number breaks and torque data. Access the Factory Manual directly — it’s the same PDF the dealer uses, 158 pages, no omissions.