Twin Lugger L6125A Marine Diesel Engines • 1995 • 50.5FT
Marine Engine Survey
Conducted by: Jeff Lendall & Sons — 805 Marine Diesel Mechanic
Comprehensive marine engine survey performed on twin Lugger L6125A marine diesel engines, ZF marine transmissions, Northern Lights generator system, drivetrain assemblies, cooling systems, fuel systems, exhaust systems, and operational sea-trial performance.

Lugger L6125A
ZF Marine
Northern Lights
Sea Trial
Vessel Identification
| HIN / IMO | 116E595 |
|---|---|
| Official Number | 1031921 |
| LOA | 50.5FT |
| Year | 1995 |
ENGINE 1 — PORT
Engine Make: Lugger
Engine Model: L6125A
Engine Type: Inboard
Power HP: 490
Fuel Type: Diesel
Hours: 3356
Serial Number: TPJ00575
Engine Location: Port
Transmission Port: ZF Marine Transmission ZF1RM310-PL
ENGINE 2 — STARBOARD
Engine Make: Lugger
Engine Model: L6125A
Engine Type: Inboard
Power HP: 490
Fuel Type: Diesel
Hours: 3335
Serial Number: TPJ00574
Engine Location: Starboard
Transmission Starboard: ZF Marine Transmission ZF1RM310-PL
Generator System
Generator Make: Northern Lights
Generator Model: M844L-20KW
Generator KW: 20
Serial Number: G190612415
Engine Room Systems Inspection
Sea Trial Report
| Sea Trial Item | Observation |
|---|---|
| Engine Starting | Engines started without excessive cranking. |
| Exhaust Appearance | Engine exhaust appeared normal overall. |
| Cooling Water Exhaust | Cooling-water discharge appeared adequate and normal. |
| Instrumentation | All gauges normal except starboard oil-pressure gauge. |
| Steering System | Steering responsive and operating normally. |
| Throttle Operation | Throttle controls operated properly. |
| Transmission Operation | Both transmissions shifted smoothly with no excessive noise or seal leaks. |
| Backdown Test | Backdown test satisfactory. |
| Rudder Linkage | Rudder linkage smooth underway with no leaks detected. |
Sea Trial Deficiencies Observed:
- Oil leaks detected at port exhaust manifold, #4 port injector nozzle, seawater pumps, generator fuel lines, and generator temperature sensor.
- Bow thruster heavily fouled with marine growth and became inoperable by end of inspection.
- Port and starboard bearing assemblies moving while shifting and require larger mounting bolts.
- Port and starboard seawater pumps leaking at weep holes.
- Coolant filters bypassed on both Lugger engines and require reconnection.
- Port and starboard alternator pulleys out of alignment.
WOT TEST:
Starboard engine produced slight white smoke during three-minute WOT run. Smoke disappeared once throttled back. Possible injector restriction noted. Fuel-system treatment with Lucas injector cleaner recommended.
Oil Analysis Links
Port Engine Oil Analysis:
Port Engine Oil L6125A
Port Transmission Oil
Port Engine Coolant
Starboard Engine Oil Analysis:
Starboard Engine Oil L6125A
Starboard Transmission Oil
Starboard Engine Coolant
Generator Oil Analysis:
Northern Lights Generator Oil
Northern Lights Generator Coolant
Marine Engine Survey Summary
As a result of this marine engine survey, drivetrain inspection, cooling-system evaluation, operational sea-trial testing, and by virtue of experience, the overall propulsion package appears generally well maintained for age and hours.
OVERALL ENGINE RATING: GOOD





Port Side #4 Injector Leaking
[videopress 15jtpO6s]
Estimate to Repair / Replace Faulty Items
| Repair Item | Estimated Cost |
|---|---|
| Starboard oil-pressure gauge repair | $150 |
| Replace cooling-system hoses and clamps (3 engines) | $4,000 |
| Replace stainless exhaust elbows, hoses, and clamps | $4,700 |
| Replace transmission oil hoses | $700 |
| Refasten shaft bearing housings | $500 |
| Repair port exhaust manifold leak | $500 |
| Repair port injector leak | $300 |
| Replace port and starboard seawater pumps | $3,300 |
| Alternator pulley alignment correction | $350 |
| Repair generator fuel-line leaks | $200 |
| Repair generator temperature-sensor leak | $75 |
| Bow thruster diagnosis / repair | $5,000–$7,000 |
| Reconnect coolant filters into cooling system | $400 |
| Flush and refill coolant systems | $1,300 |
Estimated Parts & Labor Guesstimate:
Approximately $23,425
NOTICE:
The following statements limit the liability of the undersigned and set ethical standards associated with this report. Use of this report for any purpose constitutes acceptance of the following:
NOTE A:
This report is issued without prejudice and is the property of the Requestor as listed above. Any use or distribution by another party is prohibited and shall render this report invalid.
NOTE B:
This report is issued subject to the understanding that the undersigned surveyor is not responsible for error, omission, negligence, or misstatement. This report is a statement of opinion based on conditions observed at the time of inspection. It is not a warranty expressed or implied. This inspection is valid for the inspection date only as vessel conditions in a saltwater environment may deteriorate rapidly. Condition is regarded as good or better unless otherwise stated herein.
Survey Conducted By
Owner / Surveyor: Jeff Lendall
Jeff Lendall & Sons
805 Marine Diesel Mechanic

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