1104D-E44TAG Marine Generator Engine
The Perkins 1104D‑E44TAG is a four‑cylinder inline marine auxiliary engine that drives a generator set to supply shipboard electrical power, distinguished by its compact size and low‑speed 1500 rpm operation.
Inspector Detail
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Common issues
- Raw-water pump impeller failure (leading to overheating)
- Injector fouling (causing rough running, smoke, power loss)
- Heat exchanger scaling (reducing cooling efficiency, leading to high temperatures)
- Fuel system contamination (water in fuel, clogged filters)
- Lubrication oil leaks (from seals, gaskets, or lines)
- Drive belt wear/slippage (alternator, raw water pump)
- Engine mounting deterioration (increased vibration, misalignment)
- Electrical connection corrosion/failure (starting issues, sensor faults)
Inspection checklist
- Check engine oil level and condition (clarity, presence of water/fuel)
- Inspect coolant level in expansion tank and condition (color, clarity, leaks)
- Verify raw-water flow from exhaust outlet and inspect raw-water pump for leaks/noise
- Check all drive belts for tension, cracks, and fraying
- Inspect fuel system for leaks (lines, filters, injectors) and ensure primary filter bowl is clear of water/debris
- Examine exhaust system for leaks, cracks, and proper insulation
- Listen for unusual noises (knocking, squealing, air leaks) and observe for excessive vibration
- Check all electrical connections for corrosion, tightness, and chafing
- Inspect engine mounts for signs of deterioration, cracking, or excessive compression
- Verify operation of engine shutdown systems (e.g., emergency stop, low oil pressure, high temperature alarms)
Service intervals
| Engine Oil & Filter | 250-500 hours or annually, whichever comes first |
| Fuel Filters (Primary & Secondary) | 250-500 hours or annually, whichever comes first |
| Air Filter Element | 500-1000 hours or annually, inspect more frequently in dusty environments |
| Raw-Water Pump Impeller | 250-500 hours or annually, inspect bi-annually |
| Valve Clearances | 1000-2000 hours |
| Coolant Replacement | 2000-4000 hours or every 2-3 years, depending on coolant type |
| Heat Exchanger Cleaning | 2000-4000 hours or as required based on cooling performance |
Typical wear limits
| Crankshaft Main Bearing Clearance | Max 0.10 - 0.15 mm (check service manual for exact values) |
| Cylinder Liner Wear | Max 0.15 - 0.25 mm over nominal diameter at top ring travel |
| Piston Ring End Gap | Max 1.0 - 1.5 mm (check service manual for exact values) |
| Valve Stem to Guide Clearance | Max 0.10 - 0.15 mm (excessive clearance leads to oil consumption) |
| Fuel Injector Pop Pressure | Minimum 200-220 bar, depending on injector type and specification (check service manual) |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Raw-water pump impeller kit (impeller, gasket, O-rings)
- Full set of fuel filters (primary and secondary)
- Engine oil filter
- Alternator and raw-water pump drive belts
- Engine oil (sufficient for one full change)
- Coolant (pre-mixed or concentrate for top-up/replacement)
- Assorted hose clamps and common O-rings/gaskets
- Spare fuel injector (optional, but highly recommended for remote operations)
Safety
- Hot surfaces: Exhaust manifold, turbocharger, and engine block can cause severe burns.
- Rotating machinery: Belts, pulleys, and fan (if fitted) pose entanglement hazards.
- Pressurized systems: Fuel lines, cooling system, and lubrication system can spray hot fluids under pressure.
- Electrical hazards: Live terminals, faulty wiring, and battery connections can cause shock or fire.
- Fire risk: Fuel leaks, oil leaks, or electrical shorts can ignite, especially in enclosed spaces.
Class survey
Surveyors will typically verify engine documentation (logbooks, maintenance records, test certificates). They will conduct an operational test, checking starting, loading, and stable running parameters. Critical checks include the functionality of safety devices (overspeed, low oil pressure, high temperature shutdowns), integrity of fuel and lubrication systems (no leaks, proper filtration), cooling system efficiency (temperatures, raw water strainer condition), and exhaust system integrity (no leaks, proper insulation). Engine mounts, vibration levels, and the condition of electrical systems (alternator, starter, wiring) will also be assessed. Emergency stop functionality and general cleanliness/accessibility for maintenance are key.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Service & Maintenance
Perform oil/filter service, fuel filter replacement and belt checks at Perkins recommended intervals. Inspect seawater pump and cooling system regularly.
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