CAT 330C, 330C FM, 330C L, 330C MH Gear Pump | Part No. 2835992 (283-5992)
CAT 330C, 330C FM, 330C L, 330C MH Gear Pump | Part No. 2835992 (283-5992)
CAT 2835992 (283-5992) Gear Pump | Fits 330C 330C FM 330C L 330C MH Excavator
Premium hydraulic gear pump designed as a direct OEM-compatible replacement for Caterpillar 330C, 330C FM, 330C L, and 330C MH excavators. Built to deliver consistent hydraulic flow and long service life in demanding mining, quarry, and heavy excavation applications.
Product Highlights
- Part Number: 2835992 / 283-5992
- 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 mining, quarry, and heavy excavation projects
Technical Specifications
- Part Number: 2835992 / 283-5992
- Product Type: Hydraulic Gear Pump
- Brand Compatibility: Caterpillar (CAT)
- Application: Hydraulic System
- Warranty: 12 Months
Compatible Models
This gear pump fits the following Caterpillar excavators:
- Caterpillar 330C Excavator
- Caterpillar 330C FM Excavator
- Caterpillar 330C L Excavator
- Caterpillar 330C MH Excavator
Applications
- Excavator Boom and Arm Hydraulic Circuits
- Excavator Bucket and Slewing Functions
- Heavy-Duty Digging and Trenching Operations
- Mining, Quarry, and Heavy Excavation 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 gear pump on CAT 330C, 330C FM, 330C L, or 330C MH excavators?
A: Common signs include loss of hydraulic power to boom, arm, or bucket functions, erratic or slow implement response, unusual noise (knocking or whining) from the hydraulic pump area, visible oil leakage around the pump, and overheating of the hydraulic system. The CAT 330C series is widely used in mining, quarry, and heavy excavation — a failing gear pump causes loss of productivity and costly downtime.
Q: Does the 2835992 fit all four excavator models?
A: Yes, the 2835992 (283-5992) is designed as a direct OEM-compatible replacement for the CAT 330C, 330C FM, 330C L, and 330C MH excavators. These models share the same hydraulic pump mounting and drive specifications. Contact us with your excavator serial number to confirm exact compatibility.
Q: What does the gear pump do on a CAT 330C excavator?
A: The hydraulic gear pump is responsible for supplying pressurized hydraulic fluid to the excavator's implement circuits — boom, arm, bucket, and swing functions. It is the primary hydraulic power source for all heavy-duty digging and trenching operations. A failing gear pump causes loss of hydraulic pressure, leading to slow implement response, loss of dig force, and potential damage to other hydraulic components.
Q: Should I inspect the hydraulic system when replacing this gear pump on a 330C?
A: Yes. Before installing the new gear pump, inspect all hydraulic lines, fittings, filters, and the hydraulic tank for contamination, discoloration, or metal particles. A failed gear pump often sheds metal debris throughout the hydraulic system. flushing all hydraulic lines, replacing the hydraulic oil and filter, and checking for leaks is essential before startup.
Q: What type of hydraulic oil is recommended for the CAT 330C gear pump circuit?
A: Caterpillar specifies Cat HYDO Advanced 10W or 30W hydraulic oil for the gear pump hydraulic circuit. Using non-CAT approved hydraulic fluids can cause accelerated wear, seal failure, and void the warranty. In demanding mining and quarry applications, more frequent hydraulic oil and filter changes are strongly recommended.
Q: How do I confirm this is the correct gear pump for my CAT excavator?
A: Check the part number on your current gear pump — if it reads 2835992 or 283-5992, this is the correct replacement. If the label is worn or missing, provide your excavator serial number and we will verify compatibility before you order.
Q: Does this gear pump come with mounting hardware or gaskets included?
A: The gear pump is supplied as a complete unit. Depending on your excavator configuration, you may need separate mounting bolts, hydraulic fittings, 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 gear pump?
A: This gear 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, using the wrong hydraulic oil type, or operating the excavator with a damaged hydraulic system.
Looking for this hydraulic pump? Contact us today for pricing, availability, and lead time information.
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