## 20 Cooling System - OM602, OM603

> Maintenance Jobs - 1992 through 1993

- 2010 - Checking coolant level/antifreeze protection
- 2011 - Checking coolant level
- 2080 - Replacing coolant

> Service

- 20.1 - Installation Instructions, Coolant Pre-heater, Model 124

> Additional Information

- Cooling System Diagnostic
- Oil in cooling system? After repair, use Alkaline cleaner, Disodium trioxosilicate, pentahydrate.
  - Part number is 001 986 21 71 (500 grams)
- Scale in cooling system? Use Citric Acid at 100 grams per liter.
  - Part number is 000 989 10 25 (500 grams)

> Cooling system

- 20-0001a - Coolant circuit engine function
- 20-010 - Draining and pouring in coolant - Antifreeze protection table
- 20-015 - Cleaning, flushing cooling and heating system
- 20-016 - Removing oil from cooling and heating system
- 20-0999a - Contents function description coolant circuit engine
- 20-1001a - Warming-up phase function
- 20-1002a - Part load operation function
- 20-1003a - Full load operation function
- 20-1010ha - Checking cooling system for leaks
- 20-1101a - Coolant circuit as-built configuration
- 20-1101b - Coolant circuit as-built configuration

> Cooling thermostat

- 20-110 - Removing and installing thermostat

> Cooling pump

- 20-215 - Notes regarding coolant pump
- 20-1271ax - Removing and installing engine coolant pump

> Fan couplings

- 20-310 - Temperature-controlled viscous fan coupling
- 20-330 - Magnetic fan coupling
- 20-335 - Removing and installing magnetic fan coupling
- 20-5660ha - Removing and installing viscous fan coupling
- 20-5660hw - Removing and installing viscous fan clutch

> Radiator

- 20-419 - Notes regarding radiator
- 20-425 - Repairing radiator
- 20-440 - Testing coolant level indicator
- 20-445 - Function of electrical coolant level indicator
- 20-3865ha - Removing and installing radiator
- 20-3865hw - Removing and installing radiator
- 20-4300ha - Testing cooling system cap
- 20-4540hw - Removing and installing overflow reservoir

> Mounts

- 20-1160hw - Removing and installing rear engine mount
- 20-1260hx - Removing and installing front engine mounts and/or engine brackets
- 20-1260hz - Removing and installing front engine mounts and/or engine brackets

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