Description

GEHL 602 Parts Catalog – The Only OEM Parts Manual You Should Trust

If you’ve ever tried to order parts for a GEHL 602 mini-excavator using an aftermarket parts list, you already know the headache. Wrong part numbers, missing variants, torque values that don’t match the factory fasteners. That stops here. This is the actual GEHL 602 Parts Catalog – Form No. 908543 – printed when the machine was new. 106 pages, OEM origin, not a scan of a photocopy from someone’s uncle’s shop. Every exploded view, every bolt, every seal is listed as GEHL designed it.

I’ve been turning wrenches for 28 years. ASE Master. I’ve seen what happens when a shop uses a third-party parts PDF on a 602 undercarriage. The track tension bolts come out wrong, the support roller gits the wrong seal, and suddenly you’re billing the customer for extra labor while you wait for the real part. That’s not how you run a shop. This factory catalog gives you the reference numbers that match the parts bin.

GEHL 602 Parts Catalog: What You Get

This is not a service manual. This is a parts catalog. That means every page is an exploded diagram with a numbered list of components. Section A covers the undercarriage – the area most prone to wear on a compact excavator. You get exploded views for the undercarriage assembly, support roller, track tension mechanism, and track roller. The dozer blade section is also included, though the OCR sample cuts off part way. The catalog runs 106 pages, so you can verify every bolt, nut, washer, and seal before you call the dealer.

The Table of Contents (page 3) lays it out: Section A – UNDERCARRIAGE, MODEL 602 — SUPPORT ROLLER, MODEL 602 — TRACK TENSION, MODEL 602 — TRACK ROLLER. If you need to rebuild the track frame, you’ll find the stator tube weldment, the flanged cap screws, and the lock nuts with the right thread pitch.

Why OEM Torque Specs Matter on a Mini-Excavator

Torque values aren’t suggestions. On track tension bolts, the difference between 200 ft-lb and 250 ft-lb can crack the housing or strip the threads. GEHL put the factory torque specifications in this catalog so you don’t guess. The TORQUE SPECIFICATIONS section is bookmarked in the PDF – you can jump straight to it. Use the correct grade of fastener (Cap Screw, Flanged Lock Nut) and torque to factory spec. No aftermarket substitution. Check the abbreviations table on page 2 – it decodes every fastener type used in the catalog: FCS (Flanged Cap Screw), FLN (Flanged Lock Nut), SHCS (Socket Head Cap Screw). That table alone has saved me from ordering the wrong bolt more times than I care to count.

3 Key Sections for Undercarriage Repair

Most wear on a 602 happens below the cab. Here are the three sections you’ll live in:

MODEL 602 — UNDERCARRIAGE (page 6): Contains the main frame, sprocket, idler, and hardware for the track chain. If you’re replacing the track chain, cross-reference the part numbers here against the serial number break (Before S/N AB00473). The catalog alerts you if a part changed mid-production.

MODEL 602 — TRACK TENSION (page 9): Tension springs, adjusting rods, grease cylinder components. The torque spec for the track tension adjuster lock nut is in the TORQUE SPECIFICATIONS section. Don’t skip it – a loose track will derail on a job site.

MODEL 602 — TRACK ROLLER (page 10): Single-flange and double-flange rollers, seals, and bearings. The exploded view shows the proper order of flat washers and lock washers. Order the genuine GEHL roller assembly, not a generic fit.

Check the Abbreviations Table Before Ordering

Page 2 of this GEHL 602 Parts Catalog has an abbreviations table that lists every fastener description used in the catalog. AR (As Required), CS (Cap Screw), FLN (Flanged Lock Nut), FW (Flat Washer), SHCS (Socket Head Cap Screw), etc. If you’ve ever stared at a parts list thinking “FCS” means something else, this page puts you straight. I keep a printed copy in my toolbox. When a junior tech asks “What size cap screw for the sprocket?” I point to the abbreviation and the exploded view. No guessing.

Track Tension Adjustment: Factory Procedure

The manual doesn’t just list parts – it shows you how they go together. The track tension assembly uses a grease cylinder and a tension spring. To adjust, you pump grease into the cylinder until the track sag matches the spec in the operator’s manual. This parts catalog gives you the exact seal kit number for the cylinder so you can rebuild it instead of replacing the whole assembly. That’s the kind of detail aftermarket catalogs leave out.

Related manuals worth having in your library: GEHL 602 Compact Excavator Parts Catalog, GEHL 602 2009 Parts Catalog, and the GEHL 502, 602, 652 Service Manual – Factory Specs for Compact Excavators. For background on diesel engine basics, see this Wikipedia article on diesel engines or read this Wikipedia article on diesel engines.

Frequently Asked Questions

Does this manual contain torque specs for the undercarriage bolts?

Yes. The TORQUE SPECIFICATIONS section is bookmarked in the PDF. You’ll find torque values for cap screws, flanged lock nuts, and other fasteners used in the undercarriage assembly. Use those numbers – not a generic chart.

Can I use this catalog to order parts from a dealer?

Yes. That’s what it’s designed for. The part numbers are factory GEHL numbers. Give them to your dealer and they’ll pull the bin stock. No ambiguity.

What if my 602 serial number is higher than the break point shown?

The catalog covers machines before S/N AB00473. If your serial number is newer, some parts may have changed. GEHL often revises components mid-production. Check the introduction page for updates. If uncertain, call your dealer with your serial number.

Is this a service manual with step-by-step repair instructions?

No. This is strictly a parts catalog. It contains exploded diagrams, part numbers, and quantities. For service procedures – disassembly, reassembly, troubleshooting – you need the corresponding GEHL 602 Service Manual. The parts catalog and service manual work together. Having both is ideal, but if you’re ordering parts, start here.

You don’t have to guess what bolt goes where or fight with aftermarket part numbers that don’t cross-reference. This is the factory document. 106 pages, original OEM print, direct from the GEHL archives. Access the Factory Manual now and keep it on your shop tablet or printed out. When the undercarriage needs attention, you’ll have the right number for every flange, seal, and cap screw.