CAT 6E3136 (6E-3136) Piston Pump | Fits 120H 120K 12H 12K Motor Grader
CAT 6E3136 (6E-3136) Piston Pump | Fits 120H 120K 12H 12K Motor Grader
CAT 6E3136 (6E-3136) Piston Pump | Fits 120H 120K 12H 12K Motor Grader
Premium hydraulic piston pump designed as a direct OEM-compatible replacement for Caterpillar 120H, 120K, 12H, and 12K motor graders. Built to deliver consistent hydraulic performance and long service life in demanding road construction and maintenance applications.
Product Highlights
- Part Number: 6E3136 / 6E-3136
- Direct Fit: No modifications required
- High Performance: Meets or exceeds original Caterpillar specifications
- Durable Construction: Precision-engineered for long service life
- Wide Application: Suitable for road construction and maintenance projects
Technical Specifications
- Part Number: 6E3136 / 6E-3136
- Product Type: Variable Displacement Piston Pump
- Brand Compatibility: Caterpillar (CAT)
- Application: Hydraulic System
- Warranty: 12 Months
Compatible Models
This piston pump fits the following Caterpillar motor graders:
- Caterpillar 120H Motor Grader
- Caterpillar 120K Motor Grader
- Caterpillar 12H Motor Grader
- Caterpillar 12K Motor Grader
Applications
- Motor Grader Blade Lift and Circle Functions
- Motor Grader Steering and Articulation Systems
- Heavy-Duty Grading and Road Maintenance Operations
- Construction, Road Building, and Land Leveling Projects
Why Choose This Pump?
- Quality Guaranteed - Manufactured to meet OEM standards
- Ready to Ship - In stock and available for immediate dispatch
- Expert Support - Technical assistance available
- Competitive Pricing - Cost-effective alternative to dealer parts
Frequently Asked Questions
Q: What are the symptoms of a failing hydraulic piston pump on CAT 120H, 120K, 12H, or 12K motor graders?
A: Common signs include slow or weak blade lift and tilt response, the blade hesitating or failing to hold grade position, hydraulic oil overheating during extended grading operations, whining or knocking noise from the pump area, and visible hydraulic fluid leakage. Motor graders perform precision grading work — pump failure causes loss of blade control accuracy and reduced grading efficiency, increasing rework rates.
Q: Does the 6E3136 fit all four motor grader models?
A: Yes, the 6E3136 (6E-3136) is designed as a direct OEM-compatible replacement for the CAT 120H, 120K, 12H, and 12K motor graders. These models share the same pump mounting and hydraulic system architecture. Contact us with your motor grader serial number to confirm exact compatibility.
Q: What hydraulic functions does this pump support on a motor grader?
A: As the main hydraulic pump, it supplies flow to the blade lift and tilt circuits, circle drive, articulation (steering), and ripper functions. Precision grading requires consistent hydraulic flow — a failing pump causes the blade to drift, hesitate, or lose position accuracy, directly affecting grade quality and rework rates. Motor graders often operate in dusty, high-contamination environments, making pump reliability even more critical.
Q: Should I flush the hydraulic system when replacing this pump on a motor grader?
A: Always. Flushing is essential — motor graders often operate in dusty, high-contamination environments (road construction, land leveling). Metal particles and contaminants from the old pump, combined with environmental contamination, can destroy the new pump within hours. Drain and replace all hydraulic oil, flush the system thoroughly, replace all filters, and refill with fresh Cat HYDO Advanced hydraulic oil.
Q: What type of hydraulic oil is recommended for the 120H, 120K, 12H, and 12K motor graders?
A: Caterpillar specifies Cat HYDO Advanced 10W or 30W depending on ambient operating temperature. Motor graders in road construction and land leveling applications operate under sustained hydraulic load — using non-CAT approved hydraulic fluids can cause pump wear, loss of grade control accuracy, and void the warranty.
Q: How do I confirm this is the correct pump for my motor grader?
A: Check the part number on your current hydraulic pump — if it reads 6E3136 or 6E-3136, this is the correct replacement. If the label is worn or missing, provide your motor grader serial number and we will verify compatibility before you order.
Q: Does this pump come with mounting hardware or gaskets included?
A: The pump is supplied as a complete unit. Depending on your motor grader configuration, you may need separate mounting bolts, gaskets, or O-rings. Contact us with your serial number and we will confirm exactly what is included and what additional parts you may need for installation.
Q: What is the warranty on this hydraulic piston pump?
A: This piston pump comes with a 12-month warranty covering manufacturing defects. The warranty does not cover damage caused by contaminated hydraulic oil, improper installation, failure to flush the hydraulic system, or using non-CAT approved hydraulic fluids.
Looking for this hydraulic pump? Contact us today for pricing, availability, and lead time information.
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