KANGDA 2Q46 BH2Q85R8 – Fuel Pump For Lijia 2110 At 2400 RPM

That tractor sitting outside the bay? It is not earning anything while the injection pump is on your bench. For the Lijia 2110 spinning at 2400 RPM, the KANGDA 2Q46 (BH2Q85R8) is the difference between a one-day turnaround and a three-day headache. This in-line fuel injection pump bolts straight in, matches the original 8.5mm plunger and 8mm cam stroke, and gets the machine back to the field without chasing adapters or second-guessing timing marks. It is a direct service-grade replacement, not an experiment.

The BH2Q85R8 carries a fuel delivery rate of 46 mm³/stroke at full load, with static timing slot-adjustable between 18° and 22° BTDC. Maximum governed speed hits 2600 RPM, giving you a safety margin above the engine's rated 2400 RPM. Mounting flange uses standard SAE bolt spacing – no custom brackets, no drill press work. The plunger barrel clearance spec sits at 0.012–0.018mm, and if you see return flow creeping past 30 ml/min per cylinder at full load, that is your early warning before the customer calls back with black smoke and a lost workday.

This pump lives exclusively on the Lijia 2110 series – a 2-cylinder, 4-stroke diesel displacing 1.806 liters (100mm bore, 115mm stroke). You will find it in small tractors, combine headers, skid-steer loaders, and stationary gen sets pulling 18–22 kW depending on the injector setup. It directly supersedes BH2Q80R8 and BH2QT85R9 without rewriting the parts catalog. The delivery curve matches the Lijia combustion bowl design, so you are not fighting injection knock or EGT spikes after installation. For shops stocking engines across multiple brands, this one covers a specific but frequent pain point – older Lijia-powered equipment still earns its keep, and owners will not replace the whole machine because the pump gave out.

Every extra hour on the hoist cuts into your labor margin and delays the next booking. The BH2Q85R8 cuts installation variables. Set the static timing mark on the pump flange to align with the engine timing gear – reference is 19° BTDC for the 2400 RPM rating. Torque high-pressure lines to 25–30 Nm with fresh copper washers; reusing old seals is a false economy because a single weep at the delivery valve turns into a hard-start complaint two weeks later. Adjust governor linkage free play to 0.5–1.0mm – tighter invites hunting, looser gives a lazy throttle response. Perform the leak-off test at idle and at speed before handing back the keys. That routine catches worn plunger barrels before they become a comeback, and it adds barely fifteen minutes to the job.

Q1: How does this pump hold up on low-sulfur diesel over a full season?
A: The BH2Q85R8 uses an upgraded plunger barrel metallurgy that reduces the clearance-widening effect of lower lubricity fuels. In our bulk-buy shops' feedback, service intervals extend to 1,200–1,500 hours between overhauls, compared to 900 hours on earlier variants.

Q2: Can I order a full pallet with mixed Lijia pump variants?
A: Yes. Bulk pricing applies to mixed SKUs as long as the total quantity hits the tier threshold. Specify your variant mix at order placement – we consolidate without re-boxing fees.

Q3: What is the most common premature failure mode seen on this model?
A: Delivery valve spring fatigue, not plunger wear. The spring loses tension after 4,000–5,000 hours, causing secondary injection and a rough idle that mimics injector trouble. We recommend swapping the spring during any major service.

Q4: Does timing drift over time, and how often should shops re-check it?
A: With the locknut properly torqued, drift stays under 0.5° over 2,000 hours. However, shops running PTO-driven implements should re-check at 1,000-hour intervals because cyclic torsional loads can shift the drive gear coupling.

Q5: Are exchange cores accepted for credit on bulk orders?
A: Yes, we accept rebuildable cores with intact housings and undamaged camshaft journals. Core credit is applied per unit upon inspection, deducted from your next bulk invoice.

Q6: What is the real-world power difference between this and a worn BH2QT85R9?
A: A fresh BH2Q85R8 restores 3–4 kW at the PTO compared to a BH2QT85R9 with worn barrels – that is the difference between lugging through a heavy cut and stalling out.