Cleaning cooling system
56
Removal of lime deposits in the cooling system
Procedure:
D
Drain the coolant
D
Fill the system with undiluted original pickling fluid (Lithsolventsäure or engine pickling fluid RB-06), see
sources of supply
D
Let the engine run (also in normal operation) for approx. 8 hours with this filling in the cooling circuit
D
Drain the pickling fluid and thoroughly flush the system with tap water
D
If necessary, refill the circuit again with fresh pickling fluid and pickle the engine for another 8 hours
D
Drain the pickling fluid, fill the system with tap water, and run the engine at idle for 5 minutes to flush out
all fluid; then drain the water
D
Fill the system with a 1% soda solution. Drain the soda solution after running the engine at idle for
5 minutes, and flush with tap water until the discharging water is clear
D
Fill cooling circuit with a mixture of potable tap water and anti-freeze with at least 40% by volume,
refer to Publication “Fuels, Lubricants ...”
Note:
Older radiators may develop leaks when such deposits are removed. The surge tank should be
filled only up to the bottom edge as otherwise foaming will cause the pickling fluid to spill over.
Damaged tube bundles may develop leaks when dirt deposits are removed.
Filler caps and working valves of cooling system
The rubber gaskets of the filler caps and working valves (negative pressure and positive pressure valves)
of the cooling system are subject to natural aging.
To preclude leakages in the cooling system and tailing pressure drop and its consequences up to severe
engine damage, renew the filler caps and working valves in line with the change of coolant (every two years
at the latest) see also “Filling-in of coolant” in this chapter.
Waste water treatment
Drained and spent cleaning and pickling fluid should be brought up to a pH value of 7.5 to 8.5 with the aid
of caustic soda. Once the precipitation has settled to the bottom of the container the clear fluid above can
be dumped into the sewer. The sludge at the bottom should be taken to a special waste dump. Anyway, it
is recommended to consult the local authorities for more information about waste water rules or restrictions.
Sources of supply for pickling fluids
Lithsolventsäure
Keller & Bohacek
Liliencronstr. 54
D-40472 Düsseldorf
Phone: (02 11) 96 53 0
Motor pickling fluid RB-06
Reincolor-Chemie GmbH
Werkstr. 21
D-90518 Altdorf
Phone: (0 91 87) 97 03 0
Summary of Contents for D 2866 LUE 605
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Page 14: ...Notes 12...
Page 19: ...Memoranda 17...
Page 20: ...Engine views 18 Engine views 3 4 2 1 7 6 5 8 11 10 9...
Page 68: ...Memoranda 66...
Page 133: ...131 Service Data...
Page 157: ...155 Special tools...
Page 158: ...Special tools 156 2 3 4 5 6 7 8 1 6 1 6 2 6 3 9 1 9 2 9 3 9...
Page 162: ...Special tools 160 21 22 25 25 2 24 25 1 26 27 1 27 2 27 20 1 19 2 19 1 20 2 19 20 23 28...
Page 164: ...Special tools 162 30 31 32 1 32 32 2...
Page 167: ...Special tools 165 Pressing mandel for cap dia 62 1 mm Pressing mandel for cap dia 50 1 mm...
Page 170: ...Notes 168...
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