Description

TYM T420, T500 2009 Parts Catalog – Factory Numbers, Not Guesswork

You’ve been there. A customer brings in a TYM compact tractor – T420 or T500 – needs a water pump gasket. You pull up some aftermarket parts site, it shows a picture that might match, but the part number isn’t printed anywhere you trust. You order it, it comes wrong, and you lose a day. That stops here. This is the TYM T420, T500 2009 Parts Catalog, straight from the factory that built these tractors. 249 pages of numbered figures, group codes, and OEM part numbers that actually match what came off the line. No reprints, no third-party translations. If you’re buying parts for a 2009 TYM T420 or T500, this is the only document you should touch.

What This Parts Catalog Actually Covers

It’s not a service manual. It’s a parts catalog. That means exploded views and factory part numbers for every assembly. The Table of Contents breaks it into ten groups, each with its own [Compatibility Mode] notation (don’t ask – it’s a Dassault Systemes thing). Engine and engine accessories (GROUP 01 and 02), clutch, brake, steering (GROUP 03), transmission (GROUP 04), front axle (05), hydraulics and 3-point link (06), sheet metal and cab (07), electricals and harness (08), weight and label (09). 249 pages means each group has enough detail to identify every bolt, bushing, and seal. Need a part number for the brake pedal return spring? That’s inside GROUP 03. The catalog tells you which illustration, which callout, and the exact TYM part number to give your dealer.

How to Use the Group System for Ordering

Flip to the foreword (GROUP 00). TYM designed this like a parts manual should be: you start by knowing the assembly where the part is used. If the part lives in the transmission, you go to GROUP 04. Inside transmission you find a figure – say, figure 4-10 – with numbered callouts. Below the figure is a table listing callout number, part number, description, and quantity. You take that part number to your dealer or cross-reference it online. That’s it. No guessing which “just” fits. The catalog even includes the exact model IDs – T420 and T500 NC variants – so you don’t accidentally order a part meant for a later production run.

Engine (404D-22) and Accessories: What You Need

GROUP 01 covers the core engine – the Yanmar-sourced 404D-22. This is the diesel that powers both the T420 and T500. You’ll find piston rings, cylinder head gasket, injection pump components, oil pan, and all the internal hardware. GROUP 02 extends to the accessories: starter motor, alternator, fan, radiator, air cleaner, and exhaust manifold. For any engine-overhaul job – head gasket replacement, injector rebuild, cooling system refresh – this catalog gives you the factory numbers. No aftermarket catalog has ever shown me the correct number for the 404D-22 injection pipe clamp. This one does.

Why OEM Beats Aftermarket for Parts Numbers

Aftermarket parts catalogs – the ones you find on some forum or aggregated site – are often recycled data from old TYM dealer CDs with missing supersessions. This is the original 2009 print from TYM, made under the Dongyang Moolsan machinery division. The part numbers are the ones that appear on the factory packing list. If there’s a revision, it’s noted in the book. You want to know the difference between an early T500 clutch disc and a late one? This catalog shows it in the exploded view. Aftermarket sources don’t. I’ve torqued my share of bolts and I’ve also ordered my share of wrong parts from sketchy online databases. This document eliminates that waste. Automotive Industry Overview – that’s the level of traceability you get from OEM documentation. Automotive Industry Overview

3 Critical Mistakes This Catalog Prevents

First, ordering a part that was superseded without knowing it. The catalog includes the current part number as of 2009. Second, using a generic part that fits but fails because the tolerance wasn’t designed for it – happens all the time with hydraulic seals. Third, wasting time calling a dealer and reading off a description instead of a number. With this catalog, you read the number. Your dealer punches it in, and the part shows up. That’s the kind of repeatable process that keeps a shop profitable.

Does This Manual Cover the T603 or Other Models?

No. This catalog is specific to the T420 and T500 2009 production. The TYM platform splits into size classes, and the parts rarely interchange. For larger models you need the TYM T603, T603NC, T603NP Parts Catalog – OEM Factory Manual. The T420 and T500 share some engine components (404D-22) but the chassis, hydraulics, and sheet metal are different. If you have a T433 or T503 from 2010, use TYM T433, T503 2010 Parts Catalog – OEM Factory Parts Breakdown. And for the T303/T353 group, TYM T303, T353 2008 Parts Catalog – OEM Factory Manual is your match. Mixing catalogs between model years guarantees a wrong part.

What years does this parts catalog cover?

Only the 2009 model year for TYM T420 and T500 tractors. Not earlier, not later.

Can I use this catalog for parts on a TYM T603?

No. The T603 is a different chassis with a larger engine. The part numbers, brake assemblies, transmission internals, and even the sheet metal part numbers are unique. If you need the T603 breakdown, the TYM T603, T603NC, T603NP Parts Catalog – OEM Factory Manual is the right document. Putting a T420 part into a T603 job will cost you labor and return shipping. I’ve seen it happen. Don’t be that guy.

You need part numbers you can trust, not numbers that “look close.” Access the Factory Manual – the TYM T420, T500 2009 Parts Catalog – and keep it on your tablet or print the pages you need. Your parts counter will thank you, and your job won’t sit waiting for the third wrong gasket.