ranroswang@hksparkling.com 
+86 138 2341 8469
KTJ11640 Main Hydraulic Pump for Case CX450B and CX470B Excavators
Technical Role: This is the main "heart" of the machine's hydraulic system, providing the high-pressure oil flow necessary for all major excavator functions, including digging, lifting, and travel.
Primary Compatibility:
· Case Excavators: Specifically designed for the CX470B and CX450B (Tier 3) crawler excavator models.
· Sumitomo Excavators: Compatible with heavy-duty models like the SH450A5 and SH460-5.
Thank you for choosing SPARKLING MACHINERY, your reliable supplier of Case hydraulic parts. The KTJ11640 main hydraulic pump is a Kawasaki K3V180DTP series pump designed for Case CX450B / CX470B excavators. Built with heavy-duty cast iron housing and precision internal components, it delivers high pressure and large flow to power all hydraulic functions efficiently. A direct OEM replacement to restore machine performance and productivity.
The SPARKLING MACHINERY NEW KTJ11640 Hydraulic Pump Photo:
Why Choose the SPARKLING KTJ11640 Hydraulic Pump?
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- Optimized Power Distribution: Dual-pump design allows for simultaneous independent movements of the boom and bucket without power drop.
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- High-Pressure Resilience: Built with hardened steel rotating groups to maintain performance at pressures exceeding 34 MPa (340 bar).
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- Load-Sensing Efficiency: Reduces engine load when hydraulic functions are not in use, extending engine life and saving fuel.
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- Direct OEM Fit: Precision-machined mounting flange and spline shaft for a seamless bolt-on installation.
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Common Maintenance Parts for Case CX470B
To maximize the life of your new KTJ11640 pump, ensure the following filters and fluids are serviced regularly:
| Part Name | Part Number | Application |
| Main Hydraulic Pump | KTJ11640 | Primary Hydraulic Power |
| Hydraulic Return Filter | 164334A1 | System Contaminant Removal |
| Pilot Filter Element | KHJ15930 | Pilot Circuit Protection |
| Suction Strainer | KNJ11690 | Hydraulic Tank Intake |
| Pump Coupling | KNJ10380 | Engine to Pump Drive |
Q&A Section
Q1: Can the KTJ11640 be used on the CX470C (C-Series) model?
A: No. The KTJ11640 is specific to the B-Series (CX450B/CX470B). The C-Series models utilize different electronic control systems and pump configurations.
Q2: Does the pump come with the pilot pump attached?
A: Yes, most KTJ11640 assemblies are "tandem" units that include the primary high-pressure pumps and the gear-type pilot pump as a single unit.
Q3: What is the most important step when installing a new KTJ11640?
A: You must perform a "case drain flush" and ensure the pump housing is filled with clean hydraulic oil before the first start to prevent "dry start" damage to the internal pistons.
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.
Get In Touch:
- Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879