Description

GEHL 680 2006 Parts Catalog – Factory OEM Parts Manual

If you’re tracking down a part for a GEHL 680 All-Wheel-Steer Loader without the factory catalog, you’re working blind. I’ve seen guys waste half a day trying to match a hydraulic fitting by eye – then order the wrong one twice. This is the GEHL 680 2006 Parts Catalog, 116 pages of OEM part numbers, torque specs, and hydraulic fitting data. It’s the same book the dealer uses. Don’t waste your time guessing.

GEHL 680 2006 Parts Catalog: Torque Specs and Part Numbers

Standard attaching hardware torque values are printed on the inside back cover. Metric torque values appear in the illustrations in Newton-meters – multiply by 0.738 to get foot-pounds. Every cap screw and bolt listed is Grade 8.8, cadmium or zinc plated unless noted. If you’re torquing cylinder head bolts or engine mounting fasteners, you need those numbers. I’ve seen stripped threads on loaders because someone used a generic chart. Don’t be that guy.

Order Genuine GEHL Parts Only

The introduction on page 2 spells it out: order with the correct part number, full description, quantity, model number, and serial number. This catalog covers beginning serial number 343010083. Right and left are from the operator’s seat facing forward. Use only genuine GEHL service parts – aftermarket replacements often fail under loader loads. The Alphabetical Index (A through P, Q through W) and Numerical Index make finding any part quick. For additional operational details, check the GEHL 680 2007 Operators Manual – Factory Specs & Safety Data.

116 Pages of OEM Part Numbers and Torque Specs

Contents include Decal Locations, Engine Mounting, Cylinder Head, Engine Block, Engine Lubrication, and more. The Hydraulic Fitting Data section is critical for any loader – wrong fitting thread can cause leaks or component damage. Each exploded view has reference numbers with part descriptions. A circled number means a complete assembly. A bag icon indicates a seal kit. For service procedures, get the GEHL 680 2005 Service Manual – Factory OEM Specs for Wheel Loader. For similar loader models, see GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog. If you need to understand diesel engine fundamentals, this Wikipedia article on diesel engines is a useful reference.

Does This Catalog Include Hydraulic Fitting Data?

Yes – there is a dedicated section called “Hydraulic Fitting Data.” That alone can prevent buying three different fittings. The torque specs for hydraulic connections are listed in the illustrations. Use a torque wrench, not your calibrated elbow.

Source Authenticity: OEM vs. Aftermarket

This is an original GEHL publication, form number 918122, revision C from 08/06. Aftermarket reprints often have blurry numbers or outdated part cross-references. For deeper reading on diesel engine architecture, this Wikipedia article on diesel engines provides good coverage. Don’t trust a third-party scan when the factory original is available.

Frequently Asked Questions

Can I use this parts catalog for a GEHL 680 with a serial number before 343010083?

Not fully – it covers beginning serial number 343010083 and later. For earlier models, you need the correct serial number range manual.

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

The conversion is on page 2 of the manual – multiply Newton-meters by 0.738 to get foot-pounds. For example, 100 Nm equals 73.8 ft-lb. But don’t rely on conversion alone; the illustrations in the catalog may list torque in Nm, and you need to apply the correct value for each fastener grade (Grade 8.8 cap screws are standard). Always cross-reference with the standard torque table on the inside back cover. Using incorrect torque on hydraulic fittings can lead to leaks or component failure. If you don’t have a conversion chart, keep this manual open – it’s the only source you should trust for this loader. A torque wrench is not optional.

Don’t waste time chasing part numbers from memory or aftermarket databases. Get the factory reference. Access the Factory Manual now and keep it on your tablet or printed out in the shop. Your 680 will thank you.