Rexroth A8VO200 400914-00230A hydraulic pump for Daewoo Davelon Solar 340LC-7 340LC-V DX340LC DX340 excavator
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Pump Model: A8VO200
OEM Part Numbers: 40show contactsA, 40show contacts, 401-00264, 401-00253, K1004522B, K1004522C
Manufacturer/Rexroth Cross-Reference: R902274942
Machine Compatibility:
Daewoo Doosan Solar 340LC-7
Daewoo Doosan Solar 340LC-V
Doosan DX340 / DX340LC
Condition: Genuine New / Original Brand (Rexroth Architecture)
2. Technical Specifications
Type: Dual Variable Displacement Axial Piston Pump (Tandem / Split-Flow Design)
Displacement: 200 cc/rev x 2
Max Operating Pressure: 34.3 MPa (343 bar)
Peak Pressure: 39.2 MPa (392 bar)
System Integration: Configured for high-flow open circuits, featuring integrated power regulators and proportional electronic controls tailored for heavy 34-ton production excavators.
3. Critical Installation Requirements
Case Priming (Mandatory)
Before cranking the engine, you must manually fill the pump housing with clean hydraulic oil through the highest case drain port. Running an A8VO200 pump dry for even a few seconds will cause immediate, catastrophic damage to the internal rotary group (pistons, cylinder block, and cradle swash plate).
Complete Hydraulic Decontamination
If this new pump is replacing a unit that failed mechanically, the entire hydraulic circuit must be cleaned. You must drain and scrub the hydraulic reservoir, flush the main control valve blocks, and thoroughly clean the hydraulic oil cooler lines to prevent trapped metal shrapnel from entering the new assembly.
Complete Filter and Oil Refresh
Install a brand-new suction strainer, pilot circuit filter, and high-pressure return elements (10-micron standard). Refill the entire machine system using fresh, high-grade ISO VG46 anti-wear hydraulic fluid.
Air Bleeding and Initial Run
Upon initial startup, run the engine at a low idle speed for 10 to 15 minutes. Slowly cycle all cylinder circuits (boom, arm, bucket) to their full travel limits without load to purge any trapped air back into the reservoir before putting the machine to work.
4. Frequently Asked Questions (FAQ)
Q: Are all these listed part numbers fully interchangeable?
A: Yes. Part numbers like 40show contactsA and K1004522B represent engineering evolutions and transitions between the Daewoo Solar branding and newer Doosan DX production eras. The Rexroth part number R902274942 confirms the underlying structural and hydraulic build is identical.
Q: What are the main symptoms that my Solar 340 main pump needs replacement?
A: Primary indicators include a severe drop in machine performance across all functions under load, engine stalling or extreme lugging when the joysticks are fully strokes, a sudden increase in hydraulic oil operating temperatures, or a loud metallic grinding/whining noise emanating from the pump house.
Q: Does the pump come complete with the regulators?
A: Yes, our Genuine New A8VO200 assemblies are shipped as completely integrated units, which include pre-calibrated hydraulic regulators and proportional control solenoids tested directly at the factory.
5. Shipping & Logistics
Packaging: Treated with rust-preventative oil, fitted with heavy-duty plastic port seals, and secured inside an export-grade, steel-banded reinforced wooden crate.
Transit Time: Global express air freight via DHL/FedEx/UPS typically delivers within 3 to 7 business days directly to your workshop or site.