K3V112DT Excavator Hydraulic Main Pump Complete Assembly Fix Pump Weakness, Vibration, Oil Leak, Stuck Rotation & Overheating For Medium Excavator Hydraulic System Maintenance
This full K3V112DT hydraulic main pump assembly is the core power component for medium excavator hydraulic system maintenance. Most overseas machinery repair customers search by fault words + model number. This hydraulic pump matches all mainstream hydraulic component parts including main hydraulic pump, swing rotation motor, travel drive motor, multi-way distribution valve and engine hydraulic matching parts, helping you completely repair digger hydraulic breakdowns without partial part repeated replacement.
- Municipal road renovation, large pipeline trenching and urban commercial building foundation excavation
- Large farm land reclamation, orchard digging and rural irrigation water conservancy project
- Rental medium excavator daily overhaul service for independent machinery repair shops
- Mountain slope trimming, highway trail construction and medium-size demolition jobs
- Port yard large-scale leveling, logistics ground finishing and bulk cargo handling operation
- Village community housing foundation digging and medium civil engineering construction
- Insufficient hydraulic pressure leading to weak digging power and slow movement
- Aging pump oil seal causes continuous external hydraulic oil leakage from pump body
- Internal plunger wear creates abnormal metal vibration & continuous running noise
- Unstable oil flow leads to long-time working high hydraulic oil temperature
- Pump internal wear causes pressure jitter and unsmooth digging lifting movement
- Swing weakness: slow rotation speed under heavy bucket load
- Swing vibration & sharp abnormal noise during left and right rotation
- Shaft oil seal damage leads to swing motor hydraulic oil seepage leakage
- Long continuous swing operation triggers whole hydraulic system overheating
- Walking weakness, easy slipping on muddy, wet construction ground
- Unilateral slow travel speed, excavator walking deviation during moving
- Gear wear noise and oil seal leakage of travel motor assembly
- Climbing slope stuck caused by internal travel component abrasion
- Valve core internal leakage causes bucket sagging and arm drifting
- Valve blockage leads to digging movement jitter and unsmooth operation
- Long-hour construction results in distribution valve overheating
- Engine load surge when K3V112DT hydraulic pump starts to output pressure
- Engine power drop caused by pump internal blockage and pressure loss
A1: This complete hydraulic pump assembly fixes K3V112DT main pump leakage, vibration noise, insufficient power, hydraulic overheating; swing motor weak rotation, swing oil leak, stuck swing; travel motor walking slip; distribution valve arm drift and engine hydraulic load fluctuation faults for all medium diggers.
A2: Yes, all matching interface size consistent with original equipment, no extra adapter parts needed. It fits machinery repair stores, rental excavator operators and private digger owners for on-site construction overhaul and pump replacement.
A3: Compatible with K3V112DT main hydraulic pump, swing rotation motor, travel drive motor, multi-way distribution valve and engine hydraulic auxiliary matching parts of medium excavators.
A4: The main causes are insufficient hydraulic pressure output from aging main pump, aging swing motor friction plates and worn sealing rings. This K3V112DT new main pump restores stable hydraulic pressure to eliminate swing jitter and abnormal sound completely.
A5: The K3V112DT hydraulic pump assembly comes with full sets of original matching oil seals, gaskets and wear-resistant sealing rings. Replace old pump with this assembly to stop oil seepage of main pump, swing motor and travel motor permanently.
A6: Definitely. Brand new internal plunger and flow control structure recover stable hydraulic oil circulation and pressure output, effectively lower oil temperature during long-time construction work.
| Component Category | Main Model Code | Matching Part Number | Core Repair Function |
|---|---|---|---|
| Main Hydraulic Pump | K3V112DT | K3V112DT-001, K3V112DT-PUMP-ASSY | Restore full pump pressure, stop oil leak, eliminate vibration & high temperature |
| Swing Rotation Motor | SG025, SG044 | SG044-KT12, SG025-SEAL-KIT | Fix swing weakness, rotation jitter, swing motor shaft oil leakage |
| Travel Drive Motor | TM18, TM22 | TM22-REP06, TM18-GASKET-SET | Solve walking weakness, unilateral travel deviation, climbing stuck failure |
| Multi-way Distribution Valve | DPV32, DPV40 | DPV40-VALVE-KIT, DPV32-SEAL-01 | Repair bucket sagging, arm drifting, valve block jitter & overheating |
| Engine Hydraulic Auxiliary Parts | 6BG1, 4HK1 | 6BG1-PUMP-GASKET, 4HK1-SEAL-SET | Stabilize engine load, reduce pump startup power surge & temperature rise |
All K3V112DT hydraulic main pump assemblies support global construction site and local machinery repair shop use. If you encounter any hydraulic system failure including swing motor leakage, pump vibration, walking weakness or hydraulic overheating, this complete hydraulic pump assembly is your cost-effective maintenance replacement solution without whole machine replacement.
