Coolant for 12V4000 Genset

Nalco 3477 coolant is approved in A001064 so is OK for a 12V4000G engine. The comment about Light Metals means that in MTU testing the coolant has been found to attack aluminium and other light alloys, therefore if the customer has this in the cooling system they need to be aware of this.If this is an MTU OE supplied set then as it appears in A001064 then it is approved for the whole system.

mtu Fluid and Lubricant Specifications, which list approved coolants, lubricants and other fluids are all available in the public domain here:

https://www.mtu-solutions.com/au/en/technical-information/technical-documentation.html

Related Articles
12V2000C21 coolant heater inlet and outlet points
The recomended coolant heater inlet and outlet points for 12V2000C engines as shown in attached photo. C06 and C09 on the drawing.
coolant thermostat design changes 2000 & 4000
LSB 16-07 available in Onedrive highlights details pertaining to MTU continuous improvements made to coolant thermostats in use on 4000 & 2000 series engines.
16V4000C/R/G 03 LT coolant pump overhaul
QL3 Overhaul manual for LT coolant pump eg: R/X52420300001
2000CR Coolant Pump to HP Fuel Pump driver
LSB 11-23 Issue 4 contains info and part numbers to determine driver type needed depending on various Coolant Pump and HP Fuel Pump versions and configurations.
2000Gx5 coolant pump mount oring - QPE0662010378 - 700429120000
2000Gx5 coolant pump mount o'ring is typicaly supplied with coolant pump assembly. If pump is removed from whatever reason generaly this o'ring seal maybe OK for reuse if not damaged or perished in anyway however if wanting to replace - below image ...

Coolant for 12V4000 Genset

Coolant for 12V4000 Genset

Related Articles

12V2000C21 coolant heater inlet and outlet points

coolant thermostat design changes 2000 & 4000

16V4000C/R/G 03 LT coolant pump overhaul

2000CR Coolant Pump to HP Fuel Pump driver

2000Gx5 coolant pump mount oring - QPE0662010378 - 700429120000