1. Introduzione
This manual provides essential information for the proper installation, operation, and maintenance of the Diamond S400S073 Turbocharger. Adhering to these guidelines will ensure optimal performance and longevity of the unit. This turbocharger is designed for specific Mack Truck models, enhancing engine power and efficiency.

Figura 1: Main view of the Diamond S400S073 Turbocharger, showcasing its robust construction and primary components.
2. Informazioni di sicurezza
Always prioritize safety when working with automotive components. Failure to follow safety precautions can result in serious injury or damage to equipment.
- Ensure the engine is cool and the vehicle is off before beginning any work.
- Portate l'equipaggiu di prutezzione individuale (PPE) adattatu, cumpresi occhiali di sicurezza è guanti.
- Refer to the vehicle's service manual for specific procedures and torque specifications.
- Handle the turbocharger with care to avoid damage to delicate components.
- Smaltite e vechje parti è i fluidi in modu rispunsevule secondu e regulazioni lucali.
3. Specifications Product
| Attributu | Detail |
|---|---|
| Marca | Diamante |
| Mudellu | S400S073 |
| Numeri di parte OEM | 1080021R, 1080049R, 168089, 168089R, 171177, 171177R, 171206, 171206R, 173531, 173531R, 174828, 174828R, 468089, 471177, 471206, 473531, 474828, 631GC5145AM, 631GC5145M, 631GC5145MX, 631GC5153M, 631GC5153MX, 631GC5173AM, 631GC5173AMX, 631GC5173M, 631GC5173MX |
| Applicazione | Compatible with 1999-2006 Mack Truck with E7-460(XT) Engine, 2002-2006 Mack Truck with E7 12L Engine, and Mack Truck with E7 427/454 HP, E7-427/460, E7-427/460 Vision Engine. |
| Pesu di l'articulu | 45 liri |
| Dimensioni di u pacchettu | 14 x 14 x 14 inch |
| Paese d'origine | Cina |
| Finitura esterna | Pintatu |
| Cuntenuti | Turbocharger, Gasket |
4. Setup è Installazione
Proper installation is crucial for the performance and longevity of your new turbocharger. It is recommended that installation be performed by a qualified technician.
4.1 Cuntrolli Pre-Installazione
- Inspect the new turbocharger for any signs of shipping damage.
- Ensure all necessary gaskets and seals are present and in good condition.
- Verify that the oil supply and drain lines are clean and free of obstructions.
- Check the air intake and exhaust systems for any debris or blockages.
4.2 Passi di stallazione
- Scollegate a batteria di u veiculu.
- Remove the old turbocharger, carefully detaching all connections (oil, coolant, air, exhaust).
- Clean the mounting surfaces on the engine block and exhaust manifold thoroughly.
- Installa i novi guarnizioni.
- Position the new turbocharger and secure it with appropriate fasteners, tightening to the manufacturer's specified torque.
- Reconnect the oil supply line, ensuring it is primed with fresh engine oil before final connection.
- Reconnect the oil drain line, coolant lines (if applicable), air intake, and exhaust connections.
- Double-check all connections for tightness and proper routing.

Figura 2: Side view of the turbocharger, showing the exhaust housing and mounting flange.
5. Linee di u funziunamentu
Once installed, proper operating practices will contribute to the longevity and efficiency of the turbocharger.
- Engine Warm-up: Allow the engine to reach operating temperature before applying full load or high RPMs. This ensures proper oil flow and lubrication to the turbocharger bearings.
- Engine Cool-down: After periods of high load or extended driving, allow the engine to idle for a few minutes before shutting it off. This allows the turbocharger to cool down and prevents oil coking in the bearing housing.
- Qualità di l'oliu: Use only the recommended engine oil and adhere to the vehicle manufacturer's oil change intervals. Clean, high-quality oil is vital for turbocharger health.
- Filtru à l'aria: Ensure the engine's air filter is clean and replaced regularly. A clogged air filter can restrict airflow, leading to turbocharger strain.

Figura 3: Posteriore view of the turbocharger, highlighting the compressor housing outlet.
6. Mantenimentu
Regular maintenance is key to extending the life of your turbocharger and ensuring consistent performance.
- Cambiamenti d'oliu: Follow the vehicle manufacturer's recommended oil change schedule. Use high-quality synthetic or semi-synthetic oil as specified.
- Rimpiazzamentu di u filtru d'oliu: Rimpiazzate sempre u filtru di l'oliu cù ogni cambiamentu d'oliu.
- Ispezione/Rimpiazzamentu di u Filtru d'Aria: Inspect the air filter regularly and replace it as per the vehicle's maintenance schedule or if it appears dirty.
- Verificate per e fughe: Periodically inspect all oil, coolant, and air connections around the turbocharger for any signs of leaks. Address any leaks immediately.
- Ispettate i tubi è u Clamps: Assicuratevi chì tutti i tubi sò in bonu statu è chjosi.amps are tight to prevent boost leaks or oil/coolant loss.

Figura 4: Fronte view of the turbocharger, showing the compressor wheel and inlet.
7. Risoluzione di prublemi
This section provides common issues and potential solutions. For complex problems, consult a qualified mechanic.
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| Reduced Engine Power / Lack of Boost | Boost leak, clogged air filter, faulty wastegate, damaged compressor wheel. | Check all intake and intercooler hoses for leaks. Replace air filter. Inspect wastegate actuator. Check compressor wheel for damage. |
| Fumu eccessivu da u scaricu | Oil leak into exhaust/intake, worn turbocharger seals/bearings. | Check oil lines for leaks. Inspect turbocharger for excessive shaft play. |
| Whining/Screeching Noise | Bearing wear, foreign object ingestion, loose connections. | Inspect compressor and turbine wheels for contact with housings. Check for foreign objects in intake/exhaust. |
| Oil Leaks from Turbocharger | Clogged oil drain, excessive crankcase pressure, worn seals. | Ensure oil drain line is clear. Check PCV system. Inspect turbocharger seals. |
8. Garanzia è Support
The Diamond S400S073 Turbocharger comes with a guaranzia di 12 mesi from the date of purchase, covering manufacturing defects. This warranty ensures peace of mind regarding the quality and reliability of your product.
For technical assistance, warranty claims, or product inquiries, please contact our expert technical support team. We are committed to providing comprehensive support to ensure your satisfaction.
- Periudu di garanzia: 12 mesi da a data di compra.
- Politica di ritornu: 30-day free returns from the date of delivery.
- Supportu: Expert technical support team available for assistance.
Per piacè conservate a vostra prova di compra per tutte e richieste di garanzia.





