6E-3136/0R-7682/6E-5072 plunger pump For CAT120H motor grader

6E-3136/0R-7682/6E-5072 plunger pump For CAT120H motor grader Featured Image
  • 6E-3136/0R-7682/6E-5072 plunger pump For CAT120H motor grader

Short Description:

AT331223 is a tandem hydraulic gear pump, aftermarket replacement spare part for John Deere backhoe loader. It supplies pressurized hydraulic oil for front loader, rear backhoe arm, bucket and steering circuits.

Product Detail

Product Tags

description

6E-3136 / 0R-7682 / 6E-5072 axial variable piston pump serves as main hydraulic power unit for CAT120H motor grader, driven by engine. It converts mechanical power into adjustable high-pressure hydraulic energy for grader blade, ripper and steering hydraulic systems. Built-in load sensing control valve dynamically changes pump displacement. During heavy cutting or slope grading, pump increases flow to maintain blade adjustment speed; under light load or idle travel, it reduces displacement to save fuel and lower heat accumulation.
Internal plungers, cylinder block, valve plate and slipper assemblies are manufactured from high-strength alloy steel with precision grinding and surface hardening treatment. Cast iron pump housing adopts stress relief annealing to eliminate casting residual stress, resisting vibration and particle contamination on road construction sites.High-performance FKM fluorine rubber sealing assembly delivers reliable high temperature resistance and anti-aging property, reducing internal volumetric leakage and external oil seepage.

product parameters

Part No：6E-3136, 0R-7682, 6E-5072
Product Type：Variable Displacement Axial Piston Pump
Applicable Equipment：CAT120H Motor Grader, compatible with 120K,135H,140H,140K,160H
Control Mode：Load Sensing Swash Plate Control
Displacement：66 cc/rev
Nominal Working Pressure：29 MPa (290 bar)
Max Instantaneous Peak Pressure：34 MPa (340 bar)
Rated Rotation Speed：2200 rpm
Max Allowable Rotation Speed：2500 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +112℃
Main Material：Cast iron housing, high-strength alloy steel internal parts, FKM fluorine rubber seal
Surface Treatment：Precision grinding, surface hardening, stress relief annealing, anti-rust coating
Shaft Specification：Original standard splined shaft
Interchangeability：1:1 OEM interchangeable, direct bolt-on installation
Product Condition：Brand new aftermarket part, 100% hydraulic bench tested

advantage

- Multi-circuit flow sharing for simultaneous blade lift, tilt and steering
Balanced flow distribution enables blade lifting, tilting and steering to operate concurrently without obvious flow conflict, improving road grading efficiency.
- Reinforced friction pair for long-hour continuous fine leveling
Upgraded internal friction pair resists fatigue wear under prolonged low-load precision grading, extending service life in long road construction projects.
- Stable pressure retention to maintain blade position on slope grading
Excellent static pressure holding prevents blade drifting during slope leveling, guaranteeing high accuracy for road cross-section shaping.
- Low pulsation hydraulic design improves grading smoothness
Optimized internal flow path reduces pressure pulsation, making blade movement smoother and reducing surface ripple on finished road surface.
- Continuous grading cycle bench test simulating highway leveling conditions
Each pump undergoes long-duration grading cycle test, verifying stable performance under continuous precision road leveling work.

FAQ 

Q1: Which machine does 6E-3136/0R-7682/6E-5072 plunger pump fit?
A1: This hydraulic plunger pump fits CAT120H motor grader, also compatible with 120K,135H,140H,140K,160H. Confirm machine serial number before purchase.

Q2: What hydraulic functions does this pump support?
A2: It provides high-pressure hydraulic oil for blade lift, blade tilt, ripper and steering system, completing road grading, slope shaping and land leveling tasks.

Q3: What are typical failure symptoms of worn pump?
A3: Typical symptoms: insufficient cutting power on hard ground, slow blade adjustment, blade drifts during static positioning, temperature rise during long-hour grading, pump abnormal noise and shaft seal oil leakage.

Q4: What inspections should be done before installing new pump?
A4: Inspect blade cylinders, ripper cylinder, control valve and filter elements. Fully flush hydraulic tank and pipelines to remove metal debris. Replace degraded hydraulic oil before assembly.

Q5: Why grader still lacks grading power after pump replacement?
A5: The fault may not come from pump. Check relief valve calibration, stuck valve spool, clogged filter, damaged cylinder seals or trapped air inside hydraulic circuit. Air bleeding must be completed after installation.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

our warehouse

our warehouse

Pack and ship

Pack and ship


  • Previous:
  • Next:
    • Write your message here and send it to us

    Products categories