Model: WP13
Part Number: 612630050061
Brands: Weichai Power
Engine Model: WP13, WP13.480, WP13.500, WP13.550, WP13.580
Engine Type: Diesel
Scope of application: heavy haulage trucks, mining dump trucks, construction machinery, generator sets
The WP13 has been supplied with more than one camshaft number across its production life, and part 612630050061 is one of them. The differences are usually in the injection pump drive or in a production revision of the lobe profile, and they are significant enough that the wrong shaft changes how the engine breathes and when fuel arrives.
That is why we ask for the old camshaft number and the engine plate before shipping. A shaft that fits the block can still be the wrong part, and the resulting fault appears as poor power or high exhaust temperature rather than as anything a diagnostic tool would flag.
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 an engine of this size, a small change in valve timing has a large effect on airflow, because the turbo is pushing a lot of air through a fixed port area.
When a lobe wears, the valve stops opening fully. Airflow drops, exhaust temperature rises and power falls away gradually. Drivers report a general loss of pulling power, and workshops often chase injectors or the turbo before removing the valve cover to look at the lobes.
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 change 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.
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 WP13 camshaft 1000701438 or the WP13 cylinder head 612700040030.
Weichai WP13 Camshaft (612630050061). Valve events and, where fitted, pump timing are set by this shaft. Its journals also carry the oil feed to the top end, so wear here can starve the valve train.
Check the lifter faces as well as the lobes. A dished lifter has already lost its crown and will destroy a new shaft even if the camshaft itself looks serviceable.
Numbers beginning 6126 belong to the generation shared with the WD618 and early WP12 engines. Parts in this block were revised several times, so the casting or housing is the reliable identifier rather than the number alone. On this engine, confirm the WP13 application against the engine plate before ordering.
Run the break-in procedure rather than idling: bring the engine to the specified speed promptly and hold it. Idle gives the least oil flow to the camshaft at the exact moment the surfaces are bedding in.
Ordering note. Lead time depends on whether the item is in stock or has to be produced; the position is confirmed before the order is accepted rather than after payment.
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: WP13, WP13.480, WP13.500, WP13.550, WP13.580, 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 change 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.
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 WP13 camshaft 1000701438 or the WP13 cylinder head 612700040030.
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.
