4366959 hydraulic control valve for Hitachi EX200-5 EX200LC-5 midi excavator
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Seller's contacts
+86 189 289...
+86 189 2896 5241
China
Romania, Maramures
Lithuania, Telšiai
Romania, Maramures
Netherlands, Wouw
Netherlands, Wouw
Product Overview
Every function on an EX200‑5 and EX200LC‑5 — boom up, arm crowd, bucket curl, swing, blade and both tracks — is directed by one component sitting above the travel motors: the main control valve, JCB‑style distributor referenced as 4366959. It is the machine's hydraulic traffic controller, receiving full pump flow and parceling it out to whichever circuit the operator's levers call for. When it wears, nothing fails outright; everything just gets worse. The boom drifts down between lifts, the bucket settles when the engine idles, and the machine crawls instead of tracking.
On a worked ‑5 series Hitachi, control valve wear usually shows up as drift and sluggishness rather than a bang. The operator notices the boom sinks a few centimetres while holding position, that the swing overshoots or hunts, and that the tracks seem to share flow with the attachments — speeding up when the bucket is dumped. That internal leakage comes from worn spools and scored bores letting oil bleed across circuits. This aftermarket distributor is built as one complete, bench‑tested valve assembly, matching the original 4366959 mounting and port layout, so the old block comes out and the new one bolts straight in with the same hoses.
Core Advantages
1. Kills drift and settle in one swap
Worn spools and bores let oil bleed across circuits, which shows up as boom drift and bucket settle. A fresh valve with lapped spools seals those cross‑paths, holding position the way the machine did when new.
2. Restores consistent flow sharing between tracks and attachments
The distributor decides how pump flow splits between travel and working circuits. New internals put that priority back in the right order — tracks no longer speed up when the bucket dumps, and functions no longer fight each other.
3. Pre‑set relief pressures, no guesswork
Relief and pressure‑compensator settings are established on the test bench to Hitachi specification before the valve ships. The fitter bolts it on and adjusts fine trim only if needed — no hours spent chasing pressures.
4. One complete block for a clean exchange
The valve arrives fully assembled with new spools, springs and seals inside. The old block comes off, the new one goes on, the same hoses reconnect in the same positions — a fraction of the labour of rebuilding a worn distributor in place.
5. Aftermarket build price for a high‑hour Hitachi
A dealer exchange control valve carries a serious price. This aftermarket unit restores the EX200‑5's hydraulic manners at a fraction of that cost, with sample and bulk supply for workshops keeping ‑5 series Hitachis on the books.
Manufacturing & Quality Control
Spool and bore pairs are finished to tight clearance and run‑in on the bench to confirm they move freely without stick‑slip. Each completed valve is then flow‑tested across its circuits, with relief and compensator settings logged before acceptance; units outside spec are stripped and reworked. The finished block is oil‑fogged, its ports plugged and sealed, and it ships on shock‑absorbing dunnage.
Frequently Asked Questions
Q1: How do I confirm 4366959 matches my EX200‑5?
A: Read the tag on your existing valve and send the machine serial number. The LC and standard builds share the same distributor, but port fittings can differ — we confirm before dispatch.
Q2: What symptoms point to a worn control valve?
A: Boom drift when holding position, bucket settle at idle, sluggish or jerky swing, and tracks that seem to rob flow from the attachments. A leak test on the valve will confirm before you buy.
Q3: Do I need to recalibrate anything after fitting?
A: The valve ships with reliefs set to Hitachi spec, so normally no. If the machine has aftermarket pumps or altered pressure settings, have a technician re‑verify the main relief after installation.
Q4: Can this be repaired instead of replaced?
A: Often yes — if the block itself is sound, a re‑spool kit and new seals can restore it. Send us photos of the valve and we will advise honestly whether repair or replacement is the better cost.
Q5: Is this the same valve as the EX200‑3 or EX200‑2?
A: No — the ‑5 generation uses a different distributor with updated porting and pressure settings. The generations are not interchangeable without major plumbing changes.
Q6: What voids the warranty?
A: Materials and build defects are covered. Damage from contaminated oil, water ingress, a seized spool forced into movement, or incorrect pressure adjustment is not. Photograph any arrival damage before uncrating.