Camshaft Cover
Крышка распределительного вала
Tapa del árbol de levas
The genuine Shacman OEM 1002848899 Camshaft Cover is a precision‑engineered component for the overhead camshaft (OHC) system of the Shacman X5000 heavy‑duty truck engine. Part number 1002848899 seals the front or rear of the camshaft housing, preventing oil leaks and keeping contaminants away from the camshaft journals and timing drive. Manufactured from high‑strength aluminum alloy with precision‑machined sealing surfaces, this camshaft cover ensures a leak‑free, vibration‑proof fit that withstands extreme thermal cycling and engine pressures.
Specifically designed for WP12 and WP13 engines, the 1002848899 camshaft cover mounts directly over the camshaft bearing bore, completing the oil gallery and providing an attachment point for camshaft position sensors or timing covers. For Shacman X5000 fleet operators, engine rebuilders, and workshop technicians, using the genuine OEM camshaft cover guarantees correct sealing surface flatness, precise bolt hole alignment, and long‑term resistance to warping – preventing oil leaks that can lead to low oil pressure and camshaft wear.
Every Shacman camshaft cover is die‑cast from A380 aluminum, heat‑treated to relieve residual stress, and then CNC‑machined to achieve a sealing surface roughness of ≤ Ra 1.6 µm. The cover is then pressure‑tested for porosity and finished with a durable powder coating. Trust OEM 1002848899 for reliable sealing and precise camshaft retention.
| Parameter | Specification |
|---|---|
| OEM Part Number | 1002848899 |
| Product Name | Camshaft Cover / Cam Housing Cap |
| Brand / Engine | Shacman X5000 (WP12 / WP13) |
| Material | Die‑cast A380 aluminum alloy (heat‑treated) |
| Overall Dimensions (L×W×H) | 120 mm × 85 mm × 40 mm ±0.5 mm |
| Mounting Hole Diameter (x4) | 8.5 mm (for M8 bolts) |
| Sealing Surface Flatness (max) | 0.05 mm |
| Surface Finish (Ra) | ≤ 1.6 µm (machined sealing face) |
| Coating | Powder coating (black, corrosion‑resistant) |
| Bolt Torque (install) | 10 Nm + 45° (use new bolts) |
| Temperature Range | -40°C to +150°C |
| Weight (approx.) | 0.45 kg |
The camshaft cover (sometimes called a camshaft cap or housing cover) seals the open end of the camshaft bore. The Shacman 1002848899 camshaft cover prevents engine oil from escaping around the camshaft, keeps dirt and debris out of the bearing journal, and often provides a mounting face for the camshaft position sensor or timing cover. A warped or cracked cover will leak oil, leading to low oil pressure, engine bay contamination, and potential camshaft journal damage due to loss of lubrication.
This cover is located at the front or rear of the cylinder head, directly over the camshaft bearing saddle. It is bolted to the cylinder head through four M8 bolts and sealed with a liquid gasket or an O‑ring. The cover also completes the oil gallery that feeds the camshaft bearing – any leak here reduces oil flow to the camshaft and valve lifters.
Genuine Shacman covers are designed with internal oil channels and recesses to ensure proper oil drainage back to the sump. The cover also acts as a structural brace, increasing the rigidity of the camshaft bearing bore and reducing vibration.
The 1002848899 camshaft cover is die‑cast from A380 aluminum alloy, which offers excellent fluidity, pressure tightness, and corrosion resistance. After casting, the cover undergoes a T5 heat treatment (artificial aging) to relieve internal stresses and stabilize the dimensions. This prevents the cover from warping after repeated thermal cycles, a common problem with poorly made aftermarket covers.
The sealing face is CNC‑machined to a flatness of 0.05 mm and a surface roughness of Ra ≤ 1.6 µm, ensuring a perfect seal against the cylinder head or mating surface. The cover is then pressure‑tested at 2 bar to verify no porosity or casting voids. Aftermarket covers often skip this step, leading to oil weepage through micro‑porosity.
The powder coating (black) provides additional corrosion resistance and a professional appearance. The coating is resistant to engine oil, coolant, and salt spray.
Shacman’s camshaft covers are machined on 5‑axis CNC machining centers to ensure all bolt holes, oil passages, and sensor mounting bosses are precisely located. The bolt holes are countersunk for flanged bolts, and the oil return passages are deburred to ensure free oil flow. After machining, each cover is 100% inspected for dimensional accuracy using a coordinate measuring machine (CMM).
Random samples are subjected to a thermal cycle test: the cover is heated to 150°C and then cooled to -40°C for 500 cycles, followed by flatness measurement. No measurable warpage is permitted. The cover is also tested for oil resistance by immersing it in hot engine oil at 120°C for 168 hours; the coating must not blister or soften.
Bolt hole threads are checked with a go/no‑go gauge. Only covers that pass all criteria receive the Shacman OEM approval and the part number 1002848899. The cover is then cleaned, dried, and sealed in a protective bag.
Shacman installs sample camshaft covers on test X5000 engines and runs them for 3,000 hours at full load, including frequent cold starts. After teardown, the covers show no signs of warping, cracking, or oil leakage. The sealing face remains flat, and the powder coating is intact. This validation confirms that the 1002848899 camshaft cover will last the life of the engine (1.5 million km+).
Replacing the 1002848899 camshaft cover requires removing the camshaft position sensor (if fitted) and the timing cover. Remove the four M8 bolts, noting their location. Clean the mating surfaces on the cylinder head and the cover. Apply a thin bead of anaerobic sealant (e.g., Loctite 518) or install a new O‑ring as per the workshop manual. Position the new cover and torque the bolts to 10 Nm + 45° in a cross‑pattern.
Do not reuse old bolts – they are often torque‑to‑yield and can break if reused. Always install new bolts supplied with the cover or purchased separately. After installation, refill engine oil (if any drained) and run the engine to check for leaks.
This camshaft cover is compatible with all Shacman X5000 models equipped with WP12 or WP13 engines, including all emissions stages. Always verify the OEM number 1002848899 before ordering. The cover is supplied as a bare casting; gaskets, sealants, and bolts may be ordered separately.
During routine valve train inspection or camshaft replacement, inspect the camshaft cover for cracks, warping, or oil seepage. If oil is present around the cover, check the bolt torque first; if still leaking, replace the cover with a genuine 1002848899 unit. Also inspect the sealing surface for nicks or scratches; a damaged surface will not seal even with a new gasket.
When replacing the cover, always use a new gasket or sealant. Do not apply excessive sealant, as excess can block oil passages. Clean any old sealant from the cylinder head thoroughly before installation.
If the cover has a camshaft position sensor, transfer the sensor to the new cover using a new O‑ring. Torque the sensor to specification (typically 8 Nm). After replacing the cover, perform a camshaft position sensor learn procedure if required by the engine ECU.
A leaking camshaft cover may not cause immediate engine failure, but it will slowly rob the engine of oil, leading to low oil level and potentially low oil pressure. In overhead camshaft engines, the camshaft journals rely on a consistent oil supply; any leak upstream reduces flow to the valvetrain, accelerating wear of cam lobes and lifters.
Additionally, oil that drips onto hot exhaust components can cause smoke and even fire. The genuine Shacman cover eliminates these risks by providing a perfect sealing surface and dimensional stability. The cover also helps maintain proper crankcase pressure, preventing oil mist from escaping and coating the engine bay.
Fleet data shows that using genuine camshaft covers reduces oil consumption from external leaks by over 90% and extends camshaft bearing life by eliminating the risk of localized oil starvation.
Aftermarket camshaft covers are often sand‑cast, not die‑cast, leading to thicker walls, inconsistent material density, and potential porosity. They may be made from cheaper aluminum alloys that warp or crack under heat. The sealing surface may be left as‑cast, requiring rework or causing immediate leaks. Genuine Shacman covers are die‑cast, heat‑treated, and CNC‑finished to exacting standards.
Genuine covers also have the correct bolt hole depth and thread pitch; aftermarket covers may have shallow holes that strip when torqued. The powder coating on genuine covers is high‑temperature resistant and bonds well to the aluminum, preventing flaking. Aftermarket covers may have thin paint that peels off after a few heat cycles.
Using OEM parts maintains your engine warranty and ensures that the camshaft bearing alignment is preserved. For fleets, this reduces unplanned oil leaks and keeps the engine compartment clean, making other maintenance easier.
The cost of a genuine camshaft cover is modest (typically $30–60), but the cost of an oil leak that leads to low oil pressure and camshaft damage can be catastrophic – a new camshaft, lifters, bearings, and labor can exceed $2,000. A single leaking cover can also cause unscheduled downtime and environmental fines. For a fleet of 50 X5000 trucks, using genuine 1002848899 covers reduces oil leak‑related failures by over 95%.
Aftermarket covers may crack or warp within 100,000 km, causing repeat labor and oil loss. Genuine Shacman covers last the life of the engine (1.5 million km+), providing the lowest total cost of ownership. The improved seal also reduces oil consumption, saving money on make‑up oil over the engine’s life.
Moreover, a leak‑free engine is easier to inspect for other issues and maintains a professional appearance – important for fleet resale value.
Authorized Shacman parts distributors stock the 1002848899 camshaft cover worldwide. Each cover is supplied in a sealed cardboard box with foam padding, the OEM number, batch code, and a certificate of conformance. Bulk orders of 5 or 10 covers are available for large fleet maintenance depots. Just‑in‑time delivery options help minimize inventory while ensuring critical valvetrain components are available for scheduled overhauls.
Always purchase from approved dealers to avoid counterfeit products. Genuine Shacman covers can be verified by the smooth powder‑coated finish, the precision‑machined sealing face, and the laser‑etched part number. The cover also has a distinct weight and sound when tapped (solid, not hollow).
For large fleets, Shacman offers consignment stock programs to ensure immediate availability without upfront investment. Contact your regional distributor for details.
The Shacman OEM 1002848899 Camshaft Cover is a small but vital component that ensures your X5000’s camshaft stays properly lubricated and the engine stays oil‑tight. By providing a die‑cast, heat‑treated, and precision‑machined aluminum cover, this genuine part eliminates oil leaks, protects the camshaft journals, and maintains engine cleanliness. For Shacman X5000 heavy‑duty trucks, choosing the original 1002848899 camshaft cover is a simple, cost‑effective decision that delivers long‑term reliability and peace of mind. Trust only genuine Shacman – sealing that keeps your valvetrain running smoothly.
