Specifications

98 Flushing and Cleaning Specifications for Engine Coolant Systems
Approved Cleaning Products
Manufacturer
Product name
Concentration for use Order N o.
For coolant systems:
Henkel P3-Neutrasel 5262
2% by volume
Liquid
4)
Henkel
P3-Saxin 2% by weight
Powder
4)
Novamax
Grision 5716 2% by weight
Powder
4)
Nalco
Maxi Clean 2 2% by volume
Liquid 40495
For subassemblies:
Henkel P3-FD
1)
3 to 5% by weight
Powder
4)
Henkel Porodox
2)
5 to 10% by
weight
Powder
4)
Kluthe Hakutex 60
100% by volume
Liquid 50602
Novamax Euron 13083
)
5 to 10% by
weight
Powder
4)
1)
For greasy lime deposits
3)
For heavy lime deposits
2)
Preferred for heavy lime deposits
4)
Not stocked by MTU
Flushing engine coolant systems
Drain engine coolant.
Measure pH-value of the fresh water (MTU test kit or electric pH-value measuring device).
Fill coolant system with fresh water.
• Never pour cold water into a hot engine!
Preheat, start and run engine until warm.
Run engine for approx. 30 minutes at increased speed.
Take flush-water sample (engine-coolant-sample extraction cock).
Shut down engine and drain flush water.
Measure pH-value of the flush-water sample (MTU test kit or electric pH-value measuring device).
If pH-value after flushing is only slightly above pH-value of fresh water, (pH-value difference < 1):
Fill system with treated coolant and start engine.
If pH-value after flushing is still significantly above pH-value of fresh water, (pH-value difference > 1):
Fill system with fresh flush water and repeat flushing process.
If the pH-value after 4 or 5 flushing sequences is still significantly above pH-value of
fresh water, (pH-value difference > 1):
Clean coolant system and, if necessary, the components also.
For further information, see Operating Instructions for engine in question.
Cleaning engine coolant systems
Prepare concentrated solution of detergent (for coolant systems) in warm fresh water.
In the case of powdered products, stir until the detergent is completely dissolved and without sediment.
Pour solution together with fresh water into coolant system.
Start engin
e and run until warm.
Run engine for approx. 2 hours at increased speed.
Shut down engine.
A001061/33E 08-01 ©MTU
TIM ID: 0000010140 – 004