Description

Kyokuto Kaihatsu PY115-25 Parts Catalog

If you have ever tried to order a replacement seal or a control valve for a concrete pump and ended up with the wrong part, you know the pain. This is the factory-issued parts catalog for the Kyokuto Kaihatsu PY115-25 Parts Catalog – 225 pages of exploded diagrams and part numbers. No translation needed for the numbers. You get the same reference the dealer uses.

Pump Unit Assembly Breakdown (Page 5)

Turn to page 5 and you see the pump unit assembly laid out with every component numbered. This is the core of the machine – the main pump, plunger pump, and all associated piping. Each bubble on the drawing corresponds to a part number listed later in the catalog. You don’t waste time flipping back and forth; the numbering system is consistent across all assemblies.

What Systems Are Covered in the 225 Pages?

This catalog spans the entire PY115-25: pump unit, hydraulic piping (solenoid valve, relief valve, oil tank), beam assembly with four-section folding boom, outriggers, control panels, and even the PTO drive options for Isuzu, Mitsubishi, Hino, and Nissan Diesel chassis. The table of contents groups items into logical assemblies – pump unit ASSY, main cylinder, control valve, water pump, and more. You can locate any part without digging through unrelated sections.

225 Pages of Illustrated Part Identifiers

Each of the 225 pages holds a diagram or a part list. The main parts diagram (pages 2–4) gives a bird’s-eye view of all major assemblies with reference numbers. From there you drill down to the specific sheet for the assembly you need. For example, the control valve piping section lists every pipe, fitting, and seal with its factory number. No guessing, no cross-referencing aftermarket catalogs that might be wrong.

Match Part Numbers to the Main Diagram

Use the index on pages 2–4 (主要品目図) to find the assembly number. That number leads you to the detailed exploded view. Every part is labeled with a Japanese description, but the numeric part code is universal. If you need a replacement for the solenoid valve, look under item 32 in the main diagram, then flip to the solenoid valve piping section. The part number printed there is what your supplier needs. This catalog eliminates the “I think this fits” problem.

Hydraulic Piping: Solenoid Valve and Relief Valve Sections

Pages covering solenoid valve piping (item 32), relief valve (item 16), and oil tank piping (item 33) are critical for maintaining correct hydraulic circuits. One wrong O-ring or a mis-specified relief valve spring can cause pressure loss or component damage. The catalog shows each pipe assembly with individual part numbers – including clamps, brackets, and seals. It also lists the double pilot check valve (item 54) and the counterbalance valve group. Having these details means your repair stays within factory specs.

For related equipment, check the Kyokuto Kaihatsu PY21-50 Parts Catalog – 240 Pages of Factory Specs for smaller pump models. If you handle multiple Kyokuto machines, the Kyokuto Kaihatsu PH11-50 Parts Catalog – OEM Factory Specs covers the PH series, and the Kyokuto Kaihatsu PY120-36 Parts Catalog – 350 Pages | AutoRepairManuals is available for larger concrete pump trucks.

This catalog is a direct OEM document. It is not a reprint or aftermarket compilation. The parts numbers match what Kyokuto Kaihatsu uses in production. For context on how heavy equipment documentation fits into the wider Automotive Industry Overview, consider that even a concrete pump relies on the same quality standards as any vehicle. More background on industry parts systems can be found at Automotive Industry Overview.

Is this catalog in English?

It is in Japanese but uses universal part numbers.

How do I know which part number I need?

Start with the main parts diagram on pages 2–4. Find the assembly that contains your part (e.g., pump unit or control valve). Note the assembly number (e.g., 1 for pump unit ASSY). Then go to the corresponding detailed section where each component is numbered individually. Match the bubble number to the list below the diagram – that list gives you the Kyokuto part number. If you have the old part in hand, you can often identify the number from the catalog’s illustrations. When in doubt, the assembly diagrams show enough detail to compare shapes and mounting holes. The catalog also includes hardware like bolts and washers under separate part numbers, so you can order everything needed for a full rebuild.

If you need to keep your PY115-25 operating with the right parts, get the factory reference. Access the Factory Manual.