Pilot pressure low or hydraulic controls sluggish on your 320C or 320D? A worn 126-2016 gear pump loses the pilot flow needed to shift main valve spools fully, causing all functions to respond slowly or partially. RITO supplies this SBS120 pilot gear pump to restore full pilot flow and crisp, complete main valve spool travel.
Item NO.:
126-2016Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock126-2016 Hydraulic Gear Pump for Caterpillar 320C, 320D, 318C, 323D and 325D excavators with SBS120 main pump. This gear pump provides the pilot hydraulic flow that powers the joystick pilot circuit and main control valve. Precision-lapped gear faces and a tight housing-to-gear clearance maintain the low-pressure high-flow pilot output required for full spool travel at all engine speeds.
| Part Number | 126-2016 / 1262016 |
|---|---|
| Part Name | Pilot Hydraulic Gear Pump |
| Compatible Brand | Caterpillar |
| Applicable Models | 320C, 320D, 318C, 323D, 325D, 329D Excavator (SBS120) |
| Application | Pilot circuit gear pump supplying flow for joystick pilot circuit and main control valve |
| Material | Precision alloy steel gear set and pump housing |
| Product Color | Metallic finish |
| Working Temperature | -25°C~+80°C |
| Key Function | Generates pilot hydraulic flow for 320C/320D main control valve spool actuation |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Gear-to-housing radial clearance maintained within OEM specification to minimise internal slip and sustain rated pilot flow at low engine idle speed.
Gear face-to-cover clearance lapped to OEM tolerance, reducing axial leakage that degrades pilot pressure at the spool pilot ports.
Splined drive shaft confirmed for SBS120 tandem pump configuration on 320C and 320D, ensuring correct torque engagement without backlash fretting.
Single part number 1262016 covers 320C, 320D, 318C, 323D, 325D and 329D models, simplifying procurement for Cat mid-size excavator fleets.
FAQ
Q: How do I confirm the 126-2016 gear pump is causing low pilot pressure on my 320D?
A: Measure pilot pump outlet pressure at idle engine speed. Below OEM specification (typically 3.5-4.0 MPa on the 320D pilot circuit) with normal main pump flow confirms gear pump internal wear rather than a pilot relief valve fault.
Q: Can a worn 126-2016 gear pump cause main pump case drain to rise on 320C?
A: Indirectly, yes. Low pilot pressure prevents main pump servo pistons from reaching full displacement. The pump operates at partial load against the relief valve continuously, increasing main pump case-drain temperature and flow.
Q: Should I replace the pilot filter when fitting a new 126-2016?
A: Always replace the pilot circuit inline filter and drain-and-flush the pilot accumulator before connecting the new gear pump. Debris from the worn old pump circulates in the pilot circuit and scores the new gear set within hours.
Q: How to confirm 126-2016 fits my 320D SBS120 configuration?
A: Verify the existing gear pump part number is 126-2016 or 1262016 and the main pump model is SBS120. Confirm machine model is 320C, 320D or compatible Cat model.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
RITO Excavator Stick Cylinder is built for ZX120, ZX200, ZX210, EX200-1, and 320CLZBYG. For distributors and agents: high interchangeability reduces inventory complexity. Mining customers benefit from reinforced sealing and shock resistance, lowering downtime and maintenance costs.
View More
This RITO 527-0741 527-0742 Hydraulic Pump Coupling Hub is a key transmission component for Caterpillar CAT 336GC and 336D excavators, designed to connect the engine and hydraulic pump with stable torque transfer. Featuring a 15-tooth flange structure, it ensures precise alignment, smooth power delivery, and reliable operation in demanding construction environments.
View More
This RITO 124-1607-OT Hydraulic Oil Cooler is a key cooling component for Caterpillar CAT 320C, 320D, 325D, and 330D excavators, designed to effectively dissipate heat from hydraulic oil and maintain optimal system temperature. It ensures stable oil viscosity, protects internal components, and supports reliable operation in demanding construction environments.
View More
This RITO 234-4440 Swivel Joint (Rotary Union) is a critical hydraulic component for Caterpillar CAT 336D, 325D, and 330D excavators, designed to transfer hydraulic oil between the upper structure and undercarriage during continuous rotation. It ensures stable oil flow to travel motors, maintaining smooth operation and reliable performance in construction environments.
View More
Hydraulic lag and erratic pressure in CAT excavators often signal a failing proportional valve, causing costly site delays. The 585-9230 eliminates these inefficiencies. Precision-engineered for mining and heavy construction, it prevents system overheating and jerky boom movements.
View More
Hydraulic lag and erratic pressure in CAT excavators often signal a failing proportional valve, causing costly site delays. The 585-9230 eliminates these inefficiencies. Precision-engineered for mining and heavy construction, it prevents system overheating and jerky boom movements.
View More
The RITO Excavator Coil Spring 179-6916-Y is designed for heavy-duty applications in CAT excavators, offering reliable and long-lasting performance in demanding work environments. This high-quality spring ensures consistent and efficient load-bearing capability, reducing wear and tear on critical excavator components. The 179-6916-Y is essential for maintaining optimal machine performance in industries such as construction and mining. By minimizing downtime and maintenance costs, this coil spring enhances productivity and contributes to the long-term durability of your fleet. Designed for seamless compatibility with various CAT excavator models, it provides an ideal replacement solution for wholesale distributors and agents.
View More
Unstable fan speeds and hydraulic overheating often stem from inefficient pump pressure. In grueling mining sites, a failing fan pump leads to engine derating and massive downtime. The 291-0061 solves these thermal inconsistencies, preventing the costly "cascading failures" that plague heavy excavator fleets.
View MoreLeave A Message
Scan to wechat :
