Description

Zetor 3320, 3340, 4320, 4340, 5320 2002 Parts Catalog

If you have ever tried to order a piston ring for a Zetor 3320 using an aftermarket parts list, you know the headache. Wrong numbers, missing supersessions, or a diagram that looks like it was drawn from memory. That gets expensive fast when the part shows up and does not fit. This Zetor 3320, 3340, 4320, 4340, 5320 2002 Parts Catalog is the original factory document. It is 312 pages of exploded views and OEM part numbers. No guessing what the factory used. You see the exact bearing, seal, or gasket the tractor left the line with.

The catalog covers crankcase and crankshaft groups starting at page 18 for the KLIKOVÁ SKŘÍŇ (crankcase) and page 26 for KLIKOVÉ ÚSTROJÍ (crankshaft assembly). Those two pages alone will save you from ordering the wrong main bearing set. But you need to know which production number range your tractor falls in — the manual lists batch breaks by serial number on page 2. Look up Zetor 4320 from serial number 6796 onward versus earlier builds; the parts differ.

Crankcase and Crankshaft: Page 26 Specs

Page 26 shows the crankcase assembly with each bolt, dowel, and plug identified. No third-party re-draws. This is the same illustration the Zetor dealer uses. The crankshaft section includes the keyway dimensions and the front oil seal part number. Pair it with the KLIKOVÁ SKŘÍŇ section (page 18) to verify the block casting number. If you are rebuilding a Zetor 3340 engine, you need both sections open on the bench. Do not rely on a generic parts cross-reference.

Does This Parts Catalog Cover the Fuel System?

Yes. The PALIVOVÝ SYSTÉM (fuel system) section starts on page 38. It includes the injection pump, injectors, fuel lines, and filter head with original Zetor part numbers. The fuel system is where aftermarket catalogs often get the thread pitch wrong on banjo bolts. This manual shows the exact bolt, washer, and banjo fitting. Page 38 also lists the delivery valve holder. If you need the fuel tank, that is group 312S NÁDRŽ PALIVA on page 172.

3 Reasons to Choose OEM Documentation Over Aftermarket

First, part number accuracy. The catalog was printed in 2002 and updated through January 2003 (noted on page 1). Every number was verified by Zetor engineering. Second, supersession history. Factory catalogs often include a column for obsolete parts replaced by newer numbers — aftermarket reprints strip that out. Third, production break information. The table on page 2 tells you exactly when Zetor changed the part design for each model series. You cannot get that from a generic online list. If you want to learn more about the industry standards behind these documents, see Automotive Industry Overview for context on OEM vs aftermarket documentation.

Understand the Electrical Section Before You Wire Anything

Electrical system part numbers are in group 354 ELEKTROINSTALACE, PŘÍSTROJOVÁ DESKA on page 179 and group 353 ZÁKLADNÍ ELEKTROINSTALACE on page 186. The alternator, starter, and wiring harness connectors are all drawn with the exact terminals. If you are replacing the instrument cluster on a Zetor 5320, page 179 gives the bulb and socket part numbers. Do not splice in random connectors — the factory harness is still available if you order the right piece. For more on how these internal combustion engines work with their electrical systems, see Internal Combustion Engine.

Zetor 3320, 3340, 4320, 4340, 5320 2002 Parts Catalog: Real Coverage

This catalog covers every major group: clutch (SPOJKA DVOJITÁ page 56), cooling (CHLADÍCÍ SYSTÉM page 60), front axle (PŘEDNÍ HNACÍ NÁPRAVA CARRARO page 125), hydraulics (ČERPADLO HYDROSTATICKÉHO ŘÍZENÍ page 150), and cab electrical (ELEKTROINSTALACE KABINY page 192). The 312 pages include all five model series — 3320, 3340, 4320, 4340, 5320 — plus the turbo variants (5320 TURBO etc.). If you own a Zetor Major 2002, this is the exact catalog you need. Related documents: Zetor 3320 3340 4320 4340 5320 Tractor Parts Catalog 2002, Zetor Spare parts Catalog 2003, and Zetor Major 3320-7340 2002 Parts Catalog.

FAQ

Is this catalog in English?

Yes. The catalog includes English (Spare parts catalog / Major 2002) alongside Czech, German, French, and Spanish.

How do I find the part for the hydraulic pump on my Zetor 4340?

Look up group 422 NEZÁVISLÉ ČERPADLO HYDRAULIKY on page 151. The illustration shows the pump body, gears, cover, and all seals with OEM part numbers. Cross-reference your tractor serial number from page 2 to ensure you get the correct pump variant. If your tractor has hydrostatic steering, also check group 275S HYDROSTATICKÉ ŘÍZENÍ 4X4 on page 142 — the pump may be shared with the steering system. Zetor used different pumps on early versus late production, so check the serial number range (Z 4320-4340 from 6796 onward). The catalog lists the exact part for your unit; order that number from a Zetor dealer or parts supplier. If you need to identify the pump before ordering, compare the diagram on page 151 to your tractor. The manual shows the orientation of inlet and outlet ports, which is critical for ordering the correct replacement. Do not rely on a generic pump cross-reference, as thread sizes and flange patterns changed in 2002.

The bottom line: if you are wrenching on any of the Zetor 3320, 3340, 4320, 4340, or 5320 tractors, get the official factory parts catalog on your computer or tablet. Access the Factory Manual. It saves you from ordering wrong parts and wasting time. Every exploded view, every part number, every serial break is exactly what the factory intended. That is the only way to do this job right.