Harrison M250
Delivery Snagging List
We can consider the lathe delivered and accepted as soon as chuck is delivered. The rest we will simply accept and deal with.
| Delivery Snagging Problem | Accept as ware and tare | Raise with Supplier | Status |
|---|---|---|---|
| Suspect cross slide thrust bearing | NO | YES | Solved |
| Crack in tailstock adjustment | NO | YES | Repaired |
| Missing 22 tooth gear | N/A | N/A | All expected gears present |
| Outstanding independent 4 Jaw chuck + key | NO | YES | Solved |
Commissioning Tasks
These need to be completed before the lathe can be put into use.
Critical = Needed for members to use
Not Critical = Nice to have
ie we need to complete critical tasks before members can be inducted to use.
| Task (not ordered) | Critical | Notes | Problems | Status |
|---|---|---|---|---|
| Chuck Key Lockout | YES | Part of the larger card access | Card system incomplete | |
| Access Control | YES | Maybe just padlock? | Card system incomplete | |
| Locating Rotary Converter | NO | Mount on wall? | Heavy, Use rubber isolation mounts | |
| Handwheel Pinion Shaft | YES | Knurled and unrepairable | Obsolete part | Replaced |
| E Stop switch | ?? | Knee or foot control | ||
| Oil leak from Carriage Apron | YES | Large leak - Weekend Job | Fixed | |
| Oil on drive belts | ?? | Find leak + Clean belts | ||
| Shaft seals on exposed Headstock | ?? | Oil on drive belts | ||
| Dust Cover | No | Dust cover made | Completed | |
| Clean + Degrease Lathe | NO | |||
| Count Gear Cutting Gears | NO | All listed as standard are present | Suspecting one is missing | DONE |
| Gear Speed Decal | YES | Gear position not obvious | Currently illegible | YES |
| Cutting tools wish list | NO | We only have a selection of donated HSS bits | ||
| Accessories wish list | NO | |||
| Tacho Display | NO | Will help novice + experienced | ||
| Level lathe | NO | Needs to be level to take twist out of bed | Need accurate level | |
| Realign / setup encoders | YES | Need configuring | ||
| Crosslide Lead screw Nuts | NO | These are worn | PN 905008 or fix backlash adjuster | Parts ordered Needs assembling |
| Bed protection cover | HIGH | Not present | the bed needs protecting froom prople dropping things on it, ie the chuck | |
Notes
To expand on table topics
Crosslide Lead screw Nuts
https://www.ebay.co.uk/itm/202552963597
Harrison M300 dismantling advice
Carriage saddle gearbox is mucky and needs cleaning internally before reassembly.
OLD NOTES
Kept as ongoing reference during the full commissioning process.
Tailstock damaged
Mended by supplier
Cracks in Tailstock. Returned to supplier
Cross Slide
Fixed by bearing replacement
This should be the replacement of a simple and cheap thrust bearing. It would be nice for the suppliers to fulfill their promise to supply a fully serviced lathe but not the end of the world.
According to the manual the thrust bearing is a AXK1226 + thrust washers is commonly available and cost about £4 a set. There are two in the cross slide and two in the compound slide.
https://simplybearings.co.uk/shop/product_info.php?products_id=556256