GEHL 6625, 6625sx Parts Catalog

If you’re hunting down a part number for a GEHL 6625, 6625sx Parts Catalog and relying on a blurry photo from a forum, you’re burning time you could spend on a job. This is the actual 96-page factory service parts manual for the 6625 and 6625sx skid loaders, serial number 7605 and later, equipped with the Perkins 204-30 diesel engine. I’ve torqued enough bolts to know that the wrong part number means a second trip to the dealer – and that costs money. This catalog gives you the OEM part numbers, fastener grades, and torque specs straight from the guys who built the machine.

Torque Specifications: The Only Numbers You Should Trust

Right inside the front cover and again on the inside back cover, you get standard attaching hardware torque values. But the manual also includes a dedicated Torque Specifications section (page 73 in the PDF bookmarks) and an O-Ring Table, Coupling & Adapter Torque Table. If you’ve ever had a hydraulic fitting weep because you guessed at the in‑lb value, you know why this matters. The tables list torque in ft‑lb and in‑lb for Grade 5 cap screws, hex nuts, and even Nylon Insert Lock Nuts. Don’t assume aftermarket manuals carry these correctly – I’ve seen them off by 20%.

O-Ring Table and Coupling Adapter Torque: Why You Need Both

Hydraulic leaks on a skid loader are brutal. The O-Ring Table gives you dash sizes and cross‑section dimensions so you can match the right seal. Stack that with the coupling and adapter torque table, and you won’t oval‑bore a fitting. GEHL uses SAE O‑ring boss ports; the torque values here are factory‑verified. Use them.

Numerical Index: Find Parts Without Burning Daylight

The Numerical Index (second section after the Table of Contents) lists every part number in the catalog alphabetically and numerically. If you have a part number from a worn decal, flip to the index, get the page, and order. No flipping through every section. GEHL 6625 Parts Catalog – Factory OEM Parts for Skid Loader SN 7605+ covers this same ground but with exploded diagrams – keep it on the bench together.

6625 vs 6625sx: What Changes at Serial Number 7605?

The manual is split: 6625 -S/N 7605 & Later, #907286. The 6625sx shares the same chassis and engine but has different axle and hydraulics components. The catalog calls out variations in the parts lists – pay attention to the model column. If you’ve got a 6625 born before SN 7605, this won’t match; you need the earlier edition. GEHL 6625 Service Manual – Factory Specs for Skid Loader Repair gives you the repair procedures that go with these parts numbers.

Fastener Abbreviations: Decoding the Grade and Plating

Page 2 of the manual (Introduction) lists every abbreviation used: CS (cap screw), FHSCS (flat head slotted counter sunk), HFLS (hex flange serrated), and more. All cap screws are Grade 5, cadmium or zinc plated unless noted. Nuts for Grade 5 are Grade B. The manual says it – don’t sub a Grade 2 and expect the clamp load to hold. That’s how you pull threads in an aluminum housing. this Wikipedia article on diesel engines explains the Perkins 204-30 better than I can, but the parts catalog is what gets you the right injection pump seal.

Parts You Must Buy Locally: Battery and Tire Policy

GEHL doesn’t sell replacement tires or batteries. The manual states clearly: “ALL REPLACEMENT TIRES MUST BE PURCHASED LOCALLY” and “ALL REPLACEMENT BATTERIES MUST BE PURCHASED LOCALLY.” Battery specs are in the Battery & Engine Electrical Wiring section – read that before you buy. And if you need a wheel set, the catalog lists wheel assembly part numbers with tire size callouts so you can match locally. GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog covers a different chassis, but the torque tables there mirror the same standards – cross‑check if you’re stuck.

FAQs

Does this catalog cover the 6625sx after SN 7605?

Yes. The manual is titled “6625 -S/N 7605 & Later” and includes the 6625sx – parts lists differentiate between the two models where they diverge (axles, hydraulics).

What torque specifications are listed?

Standard attaching hardware torque values are on the inside back cover. A dedicated Torque Specifications section and an O-Ring Table, Coupling & Adapter Torque Table are also included – all in ft‑lb and in‑lb for Grade 5 fasteners and hydraulic fittings.

Can I order parts directly from this catalog?

No. The introduction instructs you to order through your GEHL dealer. The catalog gives you the part number, description, quantity, and model/serial requirements so your dealer can get the right piece.

Why aren’t batteries and tires listed in the parts catalog?

GEHL company policy prohibits sale of replacement tires and batteries. Battery specs are in the Electrical Wiring section; tire size callouts accompany wheel set part numbers – you purchase those items locally.

You’ve got the engine, axle, and hydraulic breakdowns here. Don’t chase ghosts on part numbers or torque values. Download the Factory Manual from AutoRepairManuals today – it’s the same 96-page PDF the dealer uses, no aftermarket edits, no guesswork.