Model: WP7 / WP8
Part Number: 610800050053
Brands: Weichai Power
Engine Model: WP7, WP7H, WP8, WP8H
Engine Type: Diesel
Scope of application: medium and heavy trucks, buses, construction machinery, generator sets
The camshaft turns rotation into valve motion. Its lobes open the intake and exhaust valves at fixed points, and the profile sets lift and duration. On the WP7 and WP8, part 610800050053 carries the intake and exhaust lobes plus the drive gear for the injection pump on mechanical versions.
Valve timing decides how much air the turbo can push into the cylinder and how completely the exhaust leaves it. When lobes wear, the valve opens late and closes early, so the cylinder breathes less and the engine loses power without producing any fault that a diagnostic tool would show.
The camshaft fits WP7, WP7H, WP8 and WP8H engines in trucks, buses, loaders and generator sets. These engines often run at sustained load, which makes valve train wear more significant than on a delivery vehicle. Confirm the engine plate and the old camshaft number, because the pump drive gear and rear end differ between production batches.
Shafts are forged from alloy steel, heat treated, induction hardened on lobes and journals, then ground to the original profile. The checks that decide durability are done on every unit rather than sampled from a batch.
Camshaft wear is gradual and easy to misdiagnose as a fuel problem. The classic signs are a rhythmic tapping from the valve cover that is louder when cold, exhaust port temperatures that differ between cylinders, and a power loss that cannot be traced to fuel or boost.
Fit the camshaft with a complete new lifter set, new bearings and a thrust plate. Used lifters carry a wear pattern matched to the old lobes and will scuff a new shaft within minutes of running.
Match the part number, the engine rating and the pump type. A shaft from a different rating may fit but changes valve and injection timing, which shows up as smoke and poor economy. Check the number stamped on the existing shaft if the engine has been rebuilt before.
The camshaft is one link in a gear train. A worn crank gear or slack idler changes valve timing and hammers the lobes, so a rebuilt engine should have the whole train inspected. Measure backlash rather than judging by eye, and replace worn gears before fitting a new shaft.
A rebuilt engine with a timing error does not usually fail to start. It starts, idles roughly, smokes and feels flat, and the cause is often a camshaft or pump installed one tooth out. Verifying pump timing with a dial gauge before closing the front cover takes minutes and prevents a complete strip-down.
Camshafts are long and slender and bend easily in transit. They ship in rigid tubes with journals protected, braced inside the carton so the tube cannot flex. If the shaft travels with heavy parts, tell us so we can place it where nothing rests on it.
Oil quality and valve clearance decide camshaft life. Use the specified grade, change it at the severe-duty interval and check clearance at every major service. Keep the breather clean so oil mist does not carry abrasive dust into the valve chamber.
Yes. Used lifters are matched to the old lobes and will destroy a new shaft.
Yes, verify with a dial gauge after fitting.
The shaft comes with its gear fitted.
Partially, by measuring valve lift at the rockers.
Browse the Weichai camshaft category, and pair the shaft with the WP7 and WP8 crankshaft 1000186869 or the WP7 and WP8 piston 610800030035.
Weichai WP7 Camshaft (610800050053). The camshaft times the valves and, on most of these engines, drives the injection pump. Lobe profile and gear timing therefore affect both breathing and fuelling.
Compare the injection pump drive gear teeth and the lobe profile with the old shaft. Two camshafts can share journals and length and still differ in both, which changes timing and fuelling.
Numbers beginning 6108 belong to the WP7 and WP8 families. These engines share architecture but differ in detail, so a part that fits one will not necessarily suit the other without checking the casting. On this engine, confirm the WP7 application against the engine plate before ordering.
Fit new lifters, bearings and a thrust plate with the shaft. Used lifters carry the wear pattern of the old lobes and scuff a new camshaft within minutes of running.
Ordering note. Inspection reports can be provided for castings and crankshafts on request, covering the measurements taken before packing.
Related reading: Camshaft and Lifter Wear: Diagnosis and Replacement
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: WP7, WP7H, WP8, WP8H, and other Weichai series. |
| Shipping | By sea / air / express (DHL, FEDEX, TNT, UPS, EMS) |
| Packing | Standard exporting packing or as required |
| Payment Term | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depend on order) |
| Selling Point | 1. On-time Delivery 2. Genuine Quality Assurance 3. Professional Supplier |
Shafts are forged from alloy steel, heat treated, induction hardened on lobes and journals, then ground to the original profile. The checks that decide durability are done on every unit rather than sampled from a batch.
Camshaft wear is gradual and easy to misdiagnose as a fuel problem. The classic signs are a rhythmic tapping from the valve cover that is louder when cold, exhaust port temperatures that differ between cylinders, and a power loss that cannot be traced to fuel or boost.
Fit the camshaft with a complete new lifter set, new bearings and a thrust plate. Used lifters carry a wear pattern matched to the old lobes and will scuff a new shaft within minutes of running.
Match the part number, the engine rating and the pump type. A shaft from a different rating may fit but changes valve and injection timing, which shows up as smoke and poor economy. Check the number stamped on the existing shaft if the engine has been rebuilt before.
The camshaft is one link in a gear train. A worn crank gear or slack idler changes valve timing and hammers the lobes, so a rebuilt engine should have the whole train inspected. Measure backlash rather than judging by eye, and replace worn gears before fitting a new shaft.
A rebuilt engine with a timing error does not usually fail to start. It starts, idles roughly, smokes and feels flat, and the cause is often a camshaft or pump installed one tooth out. Verifying pump timing with a dial gauge before closing the front cover takes minutes and prevents a complete strip-down.
Camshafts are long and slender and bend easily in transit. They ship in rigid tubes with journals protected, braced inside the carton so the tube cannot flex. If the shaft travels with heavy parts, tell us so we can place it where nothing rests on it.
Oil quality and valve clearance decide camshaft life. Use the specified grade, change it at the severe-duty interval and check clearance at every major service. Keep the breather clean so oil mist does not carry abrasive dust into the valve chamber.
Browse the Weichai camshaft category, and pair the shaft with the WP7 and WP8 crankshaft 1000186869 or the WP7 and WP8 piston 610800030035.
Yes. Used lifters are matched to the old lobes and will destroy a new shaft.
Yes, verify with a dial gauge after fitting.
The shaft comes with its gear fitted.
Partially, by measuring valve lift at the rockers.
EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.
