CAT 2959656 (295-9656) Piston As | Fits 330D 336D 336E 340D L Excavators
CAT 2959656 (295-9656) Piston As | Fits 330D 336D 336E 340D L Excavators
In Stock & Ready for Global Express Dispatch
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Premium hydraulic piston pump piston assembly (piston shoe kit) designed as a direct OEM-compatible replacement for Caterpillar (CAT) heavy excavators and forestry machines. Precision-engineered to overhaul main hydraulic pumps, restoring accurate reciprocating stroke motion, smooth fluid displacement, and high-pressure operational efficiency under severe jobsite conditions.
Product Highlights
- Part Number: 2959656 / 295-9656
- Direct Fit OEM Replacement: Dimension tolerances, slipper face finishes, and ball-joint clearances match original Caterpillar engineering specifications perfectly for smooth pump rebuilding.
- Heavy-Duty Construction: Manufactured with high-grade alloy steel and wear-resistant precision surfaces to withstand continuous reciprocating friction, high load cycles, and extreme hydraulic pressure.
- Cost-Effective Overhaul Solution: Restores full main pump volumetric efficiency, system pressure, and machine cycle performance back to OEM standards at a fraction of the cost of replacing the complete pump unit.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2959656 / 295-9656 |
| Product Type | Piston Pump Piston Assembly / Piston Shoe Kit |
| Brand Compatibility | Caterpillar (CAT) |
| Application | Main Hydraulic Pump Overhaul & Maintenance |
| Material | High-Strength Alloy Steel & Wear-Resistant Metals |
| Warranty | 12 Months Warranty |
Compatible Models & Equipment
This premium piston pump piston assembly is precision-engineered to fit the following Caterpillar excavators and forestry machines:
- 330D Series Excavators: Caterpillar 330D / 330D FM / 330D L / 330D LN / 330D MH
- 336D & 336E Series Excavators: Caterpillar 336D / 336D L / 336D LN / 336D2 / 336D2 GC / 336D2 L / 336E / 336E L / 336E LN
- 340D Series Excavators: Caterpillar 340D L / 340D2 L
- Forestry Loggers: Caterpillar 568 FM / 568 FM LL
Key Applications
- Hydraulic Pump Rebuilding: Serves as a vital internal rotary group replacement kit for scored, worn, or damaged pump pistons.
- Performance & Pressure Restoration: Eliminates internal fluid bypass, sluggish hydraulic cylinder response, and pump noise caused by excessive piston-to-bore clearance.
- Preventative Maintenance: Provides heavy equipment repair shops and field mechanics with precision-matched components for reliable scheduled pump overhauls.
Why Choose Our Aftermarket CAT Parts?
- Guaranteed OEM Quality: Manufactured under strict ISO 9001 quality standards to match original Caterpillar factory dimensions and surface finish hardness levels.
- Cost-Effective Solution: Achieve premium dealer-level reliability and identical hydraulic performance at a fraction of the OEM replacement price.
- Ready to Ship: Kept in stock for immediate worldwide dispatch to reduce your machine's idle downtime significantly.
- Industry-Leading Support: Backed by a full 1-year warranty and a team of professional heavy machinery hydraulic technical experts.
Frequently Asked Questions (FAQ)
Q: Is this piston assembly a genuine Caterpillar part?
A: This is a premium-grade, OEM-compatible aftermarket replacement part. It is engineered to exact CAT dimensional tolerances and technical specifications, serving as a direct drop-in replacement for part number 295-9565 / 2959656.
Q: What is covered under the 12-month warranty?
A: Our 12-month warranty fully covers all manufacturing defects, material failures, and workmanship issues under standard operating conditions.
Q: What precautions should be taken during installation?
A: Thoroughly clean and flush the main pump housing before installation. We recommend replacing the cylinder block barrel, valve plate, and shaft seals simultaneously to ensure even wear and maximum pump service life.
Q: How long does international shipping take?
A: In-stock orders are typically dispatched within 3–5 business days. We offer expedited shipping and global air freight options for emergency machine breakdown situations.
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