The Northern Lights LP668T is a 6.8 L 6-cylinder turbo engine rated at 2400 rpm. It powers generator sets from Northern Lights. It holds 19 L (5.0 gal) of oil.
Also known as: Alaska Diesel Electric LP668T
| Oil capacity | 19.0 L |
|---|---|
| Displacement | 6.8 L |
| Cylinders | 6 |
| Aspiration | Turbo |
| Rated speed | 2400 rpm |
How to read your Northern Lights engine serial & model number →
| Symptom | Cause | Remedy |
|---|---|---|
| Engine failures | Failures often occur in remote areas far from competent assistance. | |
| Battery charging regulator could be ruined | Switch is turned OFF while the engine is running | |
| Engine fails to start on first attempt | Do not crank the starter for more than 15 seconds consecutively. Ensure the starter has stopped completely before re-engaging. | |
| Engine temperature rises over 200°F (94°C) | Shut down the engine and investigate the cause of overheating. | |
| Shutdown is activated and temperature gauge shows within normal range | Check the engine crankcase oil level. If low, fill with recommended lubricating oil and restart. Watch the oil pressure gauge carefully and shut off the engine if it does not show a normal reading after a few seconds of operation. If the oil level is normal, DO NOT restart the engine. Call your Northern Lights or Lugger dealer for assistance. | |
| Engine temperature rises above 205°F (97°C) | Shut off the engine immediately. |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
Compiled from service & troubleshooting documentation across every generator set that uses the Northern Lights LP668T.
The Northern Lights LP668T engine has an oil capacity of 19.0 liters.
The Northern Lights LP668T has a displacement of 6.8 liters with 6 cylinders.
The Northern Lights LP668T powers 1 generator set(s), including Northern Lights LP668T.
A commonly reported issue on generators using the Northern Lights LP668T is: Shutdown is activated and temperature gauge shows within normal range. Fix: Check the engine crankcase oil level. If low, fill with recommended lubricating oil and restart. Watch the oil pressure gauge carefully and shut off the engine if it does not show a normal reading after a few seconds of operation. If the oil level is normal, DO NOT restart the engine. Call your Northern Lights or Lugger dealer for assistance..