Cover image: existing Danch catalog close-up of the 21T-70-33250 bucket pin. Surface and identification context only; not a measured clearance or a confirmed PC2000-8 joint application.
Direct answer
For bucket-linkage play, identify the exact joint and record the pin, bushing and surrounding assembly separately. A visible gap does not show which component is worn or establish a replacement limit. Use a qualified inspection and the correct configuration before choosing a pin, bushings or a larger repair scope.
Locate the joint on the installed work equipment
Record the machine serial, attachment arrangement and the joint position on an illustration or safe overall photograph. “Bucket pin” can be too broad for an accurate inquiry. Keep the work-equipment linkage distinct from track-chain pins and bushings. For a PC2000-8 inquiry, the installed attachment and illustrated position must be stated rather than inferred from the model name.
What to record before a service or parts decision
| Record | What to include and why |
|---|---|
| Assembly | Full model/serial and attachment identification, with the relevant parts illustration. |
| Joint position | Pin location, orientation and associated bushings/retainers as shown by the applicable catalog. |
| Observation | Reported play, noise or lubrication history; do not treat a photograph as a measured clearance. |
| Inspection result | Measurement location, method, units and applicable specification recorded by the inspector. |
| Repair scope | Confirmed pin, bushing and any other supported work; exact order numbers and quantities. |
What the observations do—and do not—establish
Play at a joint does not establish that a new pin alone will restore the specified condition. The inspection must identify the relevant worn surfaces and any other repair requirement. Retain the measurements and the source of the acceptance limits; numbers taken at different positions or under different conditions may not be directly comparable. This guide supplies no clearance limit.
Turn the record into a clear service handoff
The existing Danch listing for 21T-70-33250 is a bucket-pin inquiry example associated with PC2000-8. It does not confirm the position or fitment on a particular machine. Send the catalog position and inspection scope with the inquiry. Ask separately about the pin, bushings and retention parts instead of assuming that all of them are included in one quoted item.
Safe limits for this guide
Do not place hands in a joint, stand beneath an unsupported attachment or ask an operator to move it while someone observes close to the linkage. Support, isolation and measurement must follow the applicable service procedure.
Machine and parts context
This is a general service-planning guide. The linked machine pages organize identification information; they do not make the workflow a model-specific repair procedure.
21T-70-33250 Bucket Pin for Komatsu PC2000-8. Registered catalog example; verify the exact serial, installation position and order scope before purchase.
Frequently asked questions
Can I order a pin from a gap photograph?
Use the photograph for location, then establish the part identity and inspection findings.
Will a new pin always remove the play?
No. The inspection must establish which surfaces and components require attention.
Are bushings included with a pin listing?
Do not assume so. Confirm each included item and quantity in writing.
Sources and scope
- Komatsu parts and documentation access — Manufacturer route to machine-specific parts and service documentation. This portal does not supply the individual limits or application approval for this guide.
The observation checklist is Danch Machinery editorial guidance. No customer case, measured result or technician sign-off is claimed. Published or updated 14 September 2026. Obtain the current documentation for the exact machine before any technical procedure.
Request a parts identification check
Send the complete model and serial, component position, exact number or clearly marked uncertainty, quantity and available service findings. Danch Machinery supplies genuine parts; a quotation does not replace a technical diagnosis.
About this guide
Published by Danch Machinery as general parts-identification and service-planning information. It is not a signed technical inspection or a machine-specific repair approval. Refer to the sources and scope stated in the article; confirm service procedures and fitment with the current manufacturer documentation for the exact machine.
Machine configurations and service requirements can differ by model, serial number and market. Confirm procedures and fitment with the current manufacturer documentation for your exact machine.
