KANGDA 2Q109 / BH2Q85R8 – 25KW Diesel Injection Pump For Shandong Li Zhi Yuan Applications

Designed as a direct-fit fueling solution for industrial diesel power units, the KANGDA 2Q109 (BH2Q85R8) injection pump delivers metered, high-pressure fuel delivery to support consistent engine operation in the 25kW output range. Manufactured to replace original equipment with precision-machined components, this pump is a dependable alternative for workshop maintenance, overhaul projects, and stock replenishment programs. Our unit matches the performance requirements set by Shandong Li Zhi Yuan, offering a robust and cost-effective answer to diesel fuel system degradation.

Factory-specified for use with engines manufactured by Shandong Li Zhi Yuan, this injection pump is equally at home on a variety of industrial diesel power units sharing comparable mounting and drive configurations. The design caters to continuous-load environments such as generator sets, agricultural machinery, and compact construction equipment. Extensive bench testing confirms that the hydraulic characteristics of the BH2Q85R8 element fully align with the combustion timing and injector opening pressures required by these popular Chinese-built diesel platforms. Workshops regularly stocking replacement pumps for field service will find this model directly interchangeable with a range of factory-original assemblies, minimising downtime during scheduled engine servicing or unexpected roadside breakdowns.

Correct fitting procedures are vital to preserving pump longevity and engine timing accuracy. Always begin by cleaning the mounting face on the gear housing and verifying that the drive shaft end-play falls within the tolerance band specified in the original service literature. The M22x1.5 high-pressure outlets must be torqued to specification – over-tightening distorts the delivery valve holder and invites internal leakage, while under-tightening promotes external seepage and pressure loss. Rotate the engine to Top Dead Centre (TDC) on the compression stroke before engaging the pump drive gear, then secure the three M10 flange nuts in a staggered sequence. Prime the low-pressure circuit by operating the hand primer lever until fuel, free from air bubbles, issues from the bleed screw on the filter head. Only then should you proceed to static timing adjustment, using a dial gauge to confirm that plunger lift corresponds exactly to the data plate value. A final leak check at rated speed completes the installation.

Although the BH2Q85R8 belongs to the inline jerk-pump family, its operating principles share critical ground with modern high-pressure systems: precise fuel metering, resistance to internal galling, and stable delivery across varying load transients. Over time, plunger and barrel wear, caused by water ingress or low-lubricity fuels, degrades injection pressure and creates uneven cylinder firing. Replacing a tired pump with this KANGDA unit restores peak pressure, eliminates rough idling, and cuts black-smoke emissions during acceleration – benefits that directly translate into fuel savings and reduced starter-motor strain. For repair shops handling mixed fleets of older and newer machinery, stocking this model means being prepared for both classic inline pump overhauls and the emerging trend of retrofitting durable mechanical pumps onto electronic engines as backup or off-grid solutions.

Q1: Does this pump come complete with a delivery valve holder and gasket set?
A: Yes, each unit is shipped with the delivery valve holder, springs, and copper sealing washers pre-assembled. A paper gasket for the mounting flange is also included.

Q2: Can the BH2Q85R8 be recalibrated for a different power rating?
A: The fuel delivery curve is fixed at the factory for 25kW applications. Recalibration requires specialised test bench equipment and is not recommended unless the fuel cam profile is also modified.

Q3: Is this pump compatible with biodiesel blends up to B20?
A: Absolutely. The plunger and barrel are constructed from nitrided steel, offering adequate resistance to the higher viscosity and acidic by-products associated with B20 fuel.

Q4: What is the typical lead time for orders of 10–20 units?
A: Stock levels are maintained for rapid dispatch. For orders exceeding 10 units, please confirm with our sales team to guarantee same-week shipping.

Q5: How can I verify that this replacement pump matches my engine's timing marks?
A: Refer to the timing pin hole on the pump flange. With the engine set at TDC, the pin should slide freely into the flywheel slot; if not, adjust the gear mesh by one tooth.

Q6: Does KANGDA offer technical support for installation queries outside regular hours?
A: Yes, our website hosts downloadable fitting guides and a 24-hour inquiry form; responses are provided within 12 business hours globally.