Description

Takeuchi TB020 Parts Catalog

If you have ever ordered the wrong seal, bracket, or hose for a compact excavator because the aftermarket diagram looked close enough, you already know why this Takeuchi TB020 Parts Catalog matters. I have been turning wrenches for 28 years, and I have seen more jobs stop dead because some third-party parts book had the wrong part number than I care to count. This is not a reprint. This is the factory book – 403 pages of exploded diagrams and part lists that match the machine on your lot. Serial number ranges are printed right on each section, so you know the exact parts that fit your unit. No guessing. No cross-referencing a blurry photocopy.

Undercarriage and Lower Frame Parts – Page 1 Breakdown

The manual opens with the undercarriage. Lower frame assembly, crawler belt, track roller, front idler, track adjuster, travel device, dozer blade, and lower piping. Each component is shown in an exploded view with a corresponding parts list below it. The parts list gives you the item number, part number, description, quantity, and interchange code. For example, look at page 1 (the index page shows the reference) – the crawler belt section lists the exact belt part number for the serial number range 1205001-1205750. You need the front idler? The manual has it. You need to know which track roller goes with which side? It is all there. No aftermarket book I have seen breaks down the lower frame with this much precision.

Turntable, Control Levers, and Boom Swing – 7 Sections Covered

Turntable and control lever sections are split by pattern and region. There are separate entries for operation lever right (multi pattern), operation lever right (A-B pattern), left levers, swing pedal, dozer blade lever, and travel lever. The manual even covers stands for Japan and non-Japan machines with specific serial number splits (1205001-12505561, 1205562-). Boom swing is listed separately. If you are rebuilding a control panel or replacing a lever assembly, this catalog tells you exactly which part number corresponds to your lever pattern. No need to call the dealer and hope they guess right.

Engine and Electrical System – Detailed Parts Index

The engine section covers the Kubota D1105B diesel – crankcase, oil pan, cylinder. The electrical section splits into four parts: Electrical 1, Electrical 2, Electrical 3 (cab, with serial number breaks 1205001-1205336, 1205337-1205704, 1205705-), and Electrical 4 (canopy). Control box and engine control are separate. If you are tracing a wiring harness or replacing a controller, the exploded diagram shows every connector and bracket. The parts list includes the manufacturer part number, so you can match it to the actual component. I have used this catalog to identify a solenoid valve bracket that was superseded – the manual flags it with the interchange column.

Hydraulic Piping, Tank, and Valve Assemblies

Hydraulic piping is divided into upper and lower sections. Grease piping, valve and accessories (link type vs. hydraulic type), pump drive, hydraulic tank, fuel tank, and fuel piping. The valve sections are further split by serial number ranges for control valve 1 and 2. If you have a linkage-type control valve, the catalog shows the exact valve components, including the pilot valve and sub-valve with serial number splits (1205001-1205582, 1205583-). The solenoid valve and shut-off valve are listed separately. You want to rebuild a travel motor? There are two versions – with and without parking brake, each split into 1/2 and 2/2 pages. The slew motor has similar breakdowns.

Cover, Cab, Canopy, and Heater – Regional Variations

Cover sections are split into Cover 1, 2, 3. Seats come in link type and hydraulic type, with Japan-specific versions. Cab sections are numbered 1 through 4, with ROPS & FOPS variants. Canopy sections include a 4-pole version and Japan-specific canopy. Heater and defroster are covered. If you need a cab seal or glass, the exploded diagram shows the exact orientation. The manual even includes decal sets for different regions: JOB-ACE, TCM, TAKEUCHI (Japan, English, German, French, Italian, canopy, EU, selector valve). Tool and accessories, painted color codes are at the end.

Hoe Attachment, Buckets, and Piping

The hoe attachment section covers the hoe arm, buckets 1 through 5 (with regional and serial number splits for EC, North Europe, Japan, USA). Piping for the hoe is split into Hoe 1 and Hoe 2 (auxiliary line). If you need a bucket tooth or a pin, the catalog gives you the part number and quantity. The bucket listings include the serial number range that each bucket design applies to – critical when you are ordering for a machine that may have been updated mid-production.

Hydraulic Device – Travel Motors, Slew Motors, Pumps, Cylinders

Swivel joint, control valves (link type and hydraulic type), pilot valves, sub valves, solenoid valves, shut-off valves, selector valves (ISO-JCB pattern). Cylinders: boom, arm, bucket, dozer blade, swing. Travel motors (with and without parking brake) and slew motors (with and without parking brake) are detailed with serial number splits. The hydraulic pump section is included. The parts index at the back helps you find any part number quickly. Need the charge pressure relief valve? The index points you to the correct page.

Source Validity – OEM Factory vs. Aftermarket

I have seen aftermarket parts catalogs that re-scan the original, lose resolution, and leave out the interchange notes. This is the actual Takeuchi factory document. The part numbers are the ones Takeuchi stamped on the parts. The serial number ranges are printed at the top of each section. The book number is PD3-102Z4, covering serial numbers 1205001-1205750. The manual includes instructions on how to read the parts list – the page 3 excerpt shows the example with item, part number, description, quantity, and interchange codes. That level of detail is what separates a working manual from a frustration generator. For related documentation, see Takeuchi TB020 Workshop Manual – Section: Vi. Engine, Takeuchi TB020 Workshop Manual, and Takeuchi TB020 Compact Excavator Parts Catalog. External reference: Automotive Industry Overview and Automotive Industry Overview.

FAQ

Does this catalog cover the Kubota D1105B engine?

Yes. An entire section at the back is dedicated to the engine: crankcase, oil pan, cylinder. The parts index lists the engine section separately.

What serial numbers does this manual cover?

Machine serial numbers from 1205001 to 1205750. The manual includes sub-ranges within each section (e.g., electrical 3 cab splits at 1205337 and 1205705). Your exact serial number determines which parts diagram applies.

Are torque specs included in a parts catalog?

No. This is a parts catalog – it shows exploded diagrams and part numbers only. If you need torque values, service intervals, or repair procedures, you need the Takeuchi TB020 Workshop Manual. The workshop manual has all torque specs and step-by-step procedures. You can find it on the same site.

Can I use this to order parts for a machine built after 1205750?

Only if the specific section you need does not have a later serial number split. The manual ends at 1205750. For machines built after that serial number, you would need a newer edition of the catalog (Book No. PD3-102Z4 supersedes). Check the serial number on your machine before ordering parts from this manual – the interchange column may list alternate part numbers for later units.

Access the Factory Manual now and keep a copy on your tablet or print it out. When a track adjuster seal goes at 7 AM, you will have the right part number before the parts house opens.