Being upfront about this: Komatsu isn't a current crane manufacturer. For a period, they produced mini cranes, rail cranes, and "city class" rough terrain cranes — the LW250 (in -1, -2, -3, and -5 revisions) being the model most commonly still in service. Komatsu's product focus today is excavators, dozers, wheel loaders, and mining equipment — not cranes. That makes the LW250 a genuine legacy-support situation: real machines, real owners, and a factory that's moved on to other products.
LW250 Series — Pump Part Numbers
| Model | Pump Part Number | Pump Type | Rated Capacity |
|---|---|---|---|
| LW250-5X / LW250-5H | 705-56-34290 | Main hydraulic pump | 25-26 tonne |
| LW250-5X / LW250-5H | 705-56-26030 | Main hydraulic pump (alt.) | 25-26 tonne |
| LW250L-1NH / LW250L-1NX / LW250-2 | 705-55-23040 | Gear pump | 25 tonne |
Komatsu revised part numbers across the -1, -2, -3 and -5 revisions of the LW250. Confirm your exact serial number range before ordering — WhatsApp us a photo of your machine's data plate for a precise match.
What Our Refurbishment Covers
Piston, slipper and gear wear measured against original Komatsu tolerance, wherever documentation is available for the exact revision.
Load-sensing or flow control mechanism tested for accurate response across boom, slew and outrigger functions.
Replaced as standard — critical on a machine this age, where original seal material has long since hardened.
Verified at rated pressure with output documented on the written test report before dispatch.
Why LW250 Owners Choose PumpGrid
Genuine Alternative to an Impossible New-Part Search
New OEM pumps for a discontinued 1990s-era crane are not something a current Komatsu dealer can source. Refurbishment of your existing core, or a matched used unit, is realistically the only path — and we do it properly.
Keeps a Fully-Depreciated Asset Working
An LW250 this age has long since paid for itself. A refurbished pump extends useful life for a fraction of the cost of replacing the whole machine.
Documentation for a Machine That Needs It Most
Older equipment often faces more scrutiny on safety inspections. Our written test report with actual pressure and flow readings supports that.
3-Month Warranty, Confirmed in Writing
If the pump fails due to a refurbishment defect within warranty, we replace it — not repair it.
LW250 Pump Warning Signs
Given the age of most LW250 units in service, WhatsApp us the machine's hours and history along with the symptoms — it helps us assess whether refurbishment is the right call.