Description

GEHL 502 2007 Parts Catalog

Let’s get one thing straight. If you’re ordering parts for a GEHL 502 compact excavator without the factory parts catalog, you’re gambling with downtime and busted threads. I’ve seen guys swap in a generic bolt that looked close, only to have it snap because the grade or the pitch was wrong. This is the 130-page GEHL 502 2007 Parts Catalog – Form 908542 Revision B, printed July 2007. It covers serial numbers AA01022 to AA01890. That catalog saves you those headaches.

Torque Specifications: The Numbers You Can Trust

Torque specs in this catalog come straight from Gehl’s engineering department. The fastener torque section lists values for Grade 8.8 cap screws and bolts. Metric torque values are given in Newton-meters; multiply by 0.738 to get foot-pounds. I’ve seen aftermarket charts that round that conversion to 0.74, but that little difference can over-torque a critical bolt on a hydraulic pump. This catalog also includes a dedicated “Hydraulit Fitting Data” section – hydraulic fitting torque specs you will not find in a generic PDF. Don’t guess – use the factory number.

Serial Number Range: AA01022 to AA01890 – Don’t Confuse Your Machine

Every GEHL 502 has a serial number tag on the front cab panel. This catalog splits part numbers by serial breaks. The table of contents clearly marks exceptions: “SN 999 and before except 997” and similar. If you order a hydraulic line for the wrong serial range, it won’t fit. You’ll waste a day. This catalog removes that uncertainty.

Alphabetical Index Saves Time

The index is split into two sections: Numerics through O, then O through W. That covers everything from “Arm Cylinder” to “Washer.” Each part number in the index directs you to the right exploded view and reference number. No flipping through 130 pages blind. The index alone is worth the access.

130 Pages of Factory Part Numbers – Not Aftermarket Guesses

You get exploded-view illustrations with circled reference numbers for complete assemblies. Small bag icons indicate seal kits – o-rings, seals, etc. The parts list includes descriptions, quantities, and part numbers. Every bolt grade is specified (mostly 8.8). The back of the book lists standard attaching hardware torque values. This is not a reprint of someone else’s scan – this is the original Gehl Parts Manual, 130 pages, binding intact.

Aftermarket vs. OEM: The Part Number Difference

I’ve had customers hand me aftermarket “cross-reference” sheets that list the wrong hex nut grade for a track tensioner. The factory catalog uses abbreviations like CS (Cap Screw), HN (Hex Nut), HLN (Hex Lock Nut). These are critical when ordering. For background on why hardware grade matters in compact excavators, see this Wikipedia article on diesel engines – the same principle applies to bolt metallurgy.

If you also need service procedures, check the companion GEHL 502, 602, 652 Service Manual – Factory Specs for Compact Excavators. For the skid steer line, GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog has similar accuracy. And this parts catalog itself – Gehl 502 2007 Parts Catalog – is the one you need now.

Frequently Asked Questions

Does this catalog include engine internal parts like pistons and rings?

Yes. The alphabetical index lists engine components under “C” for crankshaft, “P” for piston, etc. Part numbers and quantities are given. You can order exact Gehl replacements.

Are torque specs for hydraulic fittings included?

Yes. There is a dedicated “Hydraulit Fitting Data” section.

Don’t waste another afternoon cross-referencing parts only to get the wrong bolt grade. Access the Factory Manual now from AutoRepairManuals and get back to wrenching with the right numbers in front of you.