Harrison M250 Snagging list
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 |
|---|---|---|---|---|
| Max speed not attainable | NO | Russ suspects rotary converter sync issue? | When set to 2000rpm the actual speed is much lower, other settings seem to work fine but not exhaustively tested | Needs investigating |
| Locating Rotary Converter | NO | Mount on wall? | Heavy, Use rubber isolation mounts | Currently on floor behind lathe |
| Oil on drive belts | ?? | Find leak + Clean belts | ||
| Shaft seals on exposed Headstock | ?? | Oil on drive belts | ||
| Tacho Display | NO | Will help novice + experienced | ||
| Level lathe | NO | Needs to be level to take twist out of bed | Need accurate level | |
| Fix DRO encoders | YES | Need configuring | in progress | |
| Chuck Key Lockout | YES | Add chuck guard with interlock | Chuck guard fitted, interlock needs wiring in | |
| Crosslide Lead screw Nuts | NO | These are worn | PN 905008 or fix backlash adjuster | ?? what is current status Parts ordered Needs assembling |
| Bed protection cover | HIGH | Not present | Protecting the bed from things dropping on it, such as the chuck | OK for now |
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Notes
To expand on table topics
Forum thread with 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
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 wear and tear | Raise with Supplier | Status |
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