Northern Lights — Service Zinc Anodes
Maintenance · Zinc electrodes
From a Northern Lights operator's manual covering: LP445D, LP445T, LP668D, LP668T. Check it applies to your exact model before use.
Applies to: Northern Lights LP445D, Northern Lights LP445T, Northern Lights LP668D, Northern Lights LP668T, John Deere Powertech 4045 engine, John Deere Powertech 6068 engine
Procedure
- Drain raw water from heat exchanger.
- Remove zinc holders from back of tank and from front and port side of heat exchanger.
- Scrape or steel brush zinc electrode clean.
- Replace zinc if more than 50% eroded.
- Reinstall zinc holders with clean threads and good metal-to-metal contact.
Tools required
- Scraper or steel brush Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Replace if more than 50% eroded
Full service-parts list: Northern Lights LP445D →, Northern Lights LP445T →, Northern Lights LP668D →, Northern Lights LP668T →
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.