Description

Kuzhou WZ30-25 Parts Catalog – Factory OEM Parts List for Excavator Loader

If you’re trying to fix a WZ30-25 excavator loader and you don’t have the factory parts catalog, you’re working blind. I’ve seen guys order a hydraulic pump based on a fuzzy picture and end up with the wrong flange pattern. That costs you a week and a customer. Kuzhou WZ30-25 Parts Catalog is the original OEM document. 46 pages of exploded diagrams, part numbers, and quantities. No aftermarket translation errors. No missing pages.

I’ve used aftermarket parts lists before. They drop fasteners. They list the wrong bolt grade. This catalog comes straight from Xu Zhou Xugong Special Construction Machinery Co., Ltd. – the people who built the machine.

36 Systems Covered – From Diesel Engine to Battery Box

The table of contents on page 3 runs 36 chapters. Engine System I and II, air cleaner assembly, muffler, fuel tank, working oil tank, front and rear axle assembly, main transmission, planetary reduction, brake assembly, tire rim, transmission system, torque converter assembly, regulator valve, drive shaft, loader working device, rear chassis, front chassis, excavating working device, five hydraulic system chapters (working device, steering, loader, leg, circuit), compressor bracket, hood, brake system, fuel gauge, fuel tank governor, cooler, clutch system, starting system, fuel oil system, battery box. That covers every bolt, hose, seal, and bracket on the WZ30-25.

This catalog prevents that.

Engine System I and II – What the Part Numbers Tell You

On page 5 you see a parts table for Engine System II. Part No. WZ30-05 – bolt M16x60, quantity 4. JB23014 – washer 16, 4 pieces. Water drain valve WZ30-4. Bolts M12x35, M20x40, M16x50 – all with correct washer and lock washer specs. If you need a M20x110 bolt, the catalog gives you WZ41002 with a spring washer 10. That level of granularity means you order the exact fastener, not a “close enough” substitute that strips a thread or leaks.

Each chapter shows an exploded diagram with callout numbers matching that parts table. You see where the part goes and how many you need. No guessing.

Do You Need This Catalog for a WZ30-25?

Yes. Whether you’re a home garage mechanic who bought a used WZ30-25 or a small shop servicing construction equipment, you need this. Without factory part numbers, you’ll waste time hunting for cross-references or order the wrong component. The exploded diagrams also help you understand assembly order when you’re reinstalling a hydraulic pump or rebuilding an axle.

Factory OEM vs Aftermarket Catalogs

This is direct from Kuzhou. Not a third-party scan, not a compilation from multiple models. The bilingual labels (Chinese and English) let you check original part numbers. Aftermarket catalogs often combine variants or skip hardware. This one lists quantities and notes like “Drain oil connection” on the water drain valve. Trust the factory source – your repair depends on it.

Pair with the Service Manual

Parts catalog tells you what to order. Service manual tells you how to install it with the right torque and sequence. For the WZ30-25, have both on the bench. On this site, you’ll find related documents: Massey-Harris-Ferguson FF 30 GS Parts Catalog 1957, Futura Wear Technology Parts Catalog, and LANDTRAC TRACTOR Parts Manual Models 410-550 DTC – Section: Numerical Index. For background on construction equipment standards, see Automotive Industry Overview. The engineering principles behind these machines tie back to the Automotive Industry Overview core.

Does this catalog include torque specifications?

No. This is a parts catalog, not a service manual. You need the factory service manual for torque values and repair procedures.

How do I interpret the part numbers and diagrams?

Each chapter has an exploded view with callout numbers matching a parts table. For example, on page 5 of the Engine System II section, you see part number WZ30-05 for a bolt M16x60, quantity 4, with a note “Clamp”. The diagrams show where each part goes. Cross-reference the part number with your dealer to order. If a part has no number listed, the note column may indicate it’s a reference assembly. The catalog uses standard metric fastener sizes like M10, M12, M16, M20, all with proper washer and lock washer callouts. This precision eliminates guesswork when ordering replacement components for your Kuzhou WZ30-25.

If you’re ready to stop guessing which bolt or hose you need, get the factory document that lists every piece. Access the Factory Manual from AutoRepairManuals and keep it on your workbench.