Northern Lights M1064H / M1066H — Checking Coolant Level
Maintenance · Cooling system
For the Northern Lights M1064H / M1066H, from the Northern Lights operator's manual.
Applies to: Northern Lights M1064H, Northern Lights M1066H, John Deere Powertech Tier II 4045 engine, John Deere Powertech Tier II 6068 engine
Before you start
- Use extreme caution when working on hot engines to avoid burns.
Procedure
- Check coolant level each day before starting engine.
- Remove pressure cap from expansion tank and check water level.
- Level should be about 1 3/4 in. (4-5 cm) below filler cap sealing surface when engine is cold.
- When filling, open venting cock on top of turbocharger to prevent air pockets.
- Pressure valve in filler cap releases at approximately 7 PSI (0.5 bar).
- Makeup coolant must meet engine coolant requirements.
Specs & values
- Filler cap release pressure 7 PSI (0.5 bar)
Full service-parts list: Northern Lights M1064H →, Northern Lights M1066H →
Source: Northern Lights operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.