KANGDA 2QT64 – Direct Replacement Injection Pump For TY2100IT Power Units

Engineered as a direct hydraulic match for the Jiangdong TY2100IT naturally aspirated diesel, the KANGDA 2QT64 injection pump governs fuel metering at the 2400 RPM governed speed while supporting the engine's 21 kW continuous output. This component serves as the heart of the mechanical common-rail style delivery system, converting camshaft rotation into precisely timed pressure spikes that open the unit injectors. For workshop managers dealing with declining rail pressure or uneven cylinder contributions, this pump restores the original factory fuel mapping without requiring expensive ECU reprogramming.

The 2QT64 pump body houses a 9 mm plunger matched to a high-strength barrel, delivering a stroke volume calibrated specifically for the TY2100IT's 100x105 mm bore and stroke dimensions. At the rated 2400 RPM engine speed, the pump maintains injection advance within 12 degrees BTDC to ensure complete combustion under varying load factors. The unit's delivery valve retains a cracking pressure of approximately 150 bar, which works in conjunction with the high-pressure lines to preserve residual pressure during engine shutdown. This feature reduces restart hesitation and minimizes air ingress into the fuel gallery.

This pump primarily serves the Benye 254C agricultural tractor and other implements built around the Jiangdong power platform. It also cross-references to stationary generator sets and irrigation pumps that utilize the same TY2100IT base engine. Repair facilities in regions with high TY series penetration, such as Southeast Asian and South American markets, will recognize this part number as the preferred remedy for power loss under sustained PTO operation. The pump's governor characteristics are tuned for the draft control demands typical of rotary tillage, where rapid throttle changes require immediate fuel correction.

Prior to removal, technicians must relieve residual pressure from the supply lines to prevent fuel spray hazards. The pump flange attaches via three M8 studs; torque these evenly to 18 Nm to avoid distorting the housing, which can cause plunger binding. Align the timing pin hole on the pump gear with the index mark on the timing case cover before tensioning the drive belt. After installation, bleed air from the system by loosening the high-pressure line nuts at the injector ends and cranking the starter in 15-second intervals. Failure to purge trapped air will result in prolonged cranking and false diagnostic codes for low rail pressure.

Replacing this pump often resolves persistent hunting at idle and black smoke emission during acceleration, conditions that injector cleaning or fuel filter changes cannot correct. Internal wear in the plunger and delivery valve increases fuel leak-back, reducing the hydraulic pressure available for injection. Workshop data shows that a worn 2QT64 commonly contributes to delayed timing due to excessive internal clearance, which raises exhaust gas temperatures and accelerates valve train wear. By fitting a new KANGDA unit, shops restore the correct pressure rise rate and recover the engine's rated horsepower without altering governor springs or shimming the fuel rack.

Q1: How can I differentiate the 2QT64 from visually similar pumps on the TY series?
A: Check the governor lever orientation and the delivery valve holder size. The 2QT64 uses a 22 mm hex holder, distinct from the 24 mm found on higher-output variants.

Q2: What is the recommended break-in procedure after installing a new pump?
A: Run the engine at low idle for 10 minutes, then perform three progressive load cycles from 50% to 90% of rated power to seat the plunger surfaces.

Q3: Does this pump work with biodiesel blends up to B20?
A: Yes, the internal seals are B20-compatible, but you should shorten the filter replacement interval to 150 hours for the first two service cycles.

Q4: How do I check if the pump is the root cause of hard starting?
A: Perform a delivery valve leak test. If the pressure drops below 80 bar within 30 seconds after shutdown, the pump's internal clearances are likely excessive.

Q5: Can the 2QT64 be used on TY2100IT engines equipped with aftermarket turbos?
A: Not recommended. The fuel map does not compensate for boost pressure, which would cause lean fueling and potentially damage the pistons.

Q6: What packing quantity is offered for wholesale orders?
A: Bulk orders are packed in reinforced cartons of 6 units with individual anti-corrosion wraps to prevent moisture ingress during sea freight.