Man D 2842 LE 620 Repair Manual page 52

Repairing coolant pump with high-temperature
Installation note for mechanical seal:
Install mechanical seal while "wet", i.e. to install it, coat holding sleeve and water pump shaft with a mixture
of either 50% water and 50% cleaning spirit or 40% to 50% antifreeze agent as per MAN 324 and water.
Other antiseize agents must not be used.
Because the seal on collar Á is coated with sealing paint, no sealing paint needs to be applied if the locat-
ing bore in the coolant pump housing is in perfect condition.
If the bore shows even the slightest scoring or other minor damage, a sealing bead of Dirko-Transparent,
Part No. , must be applied to collar Á.
Fit the seal with a plastic transportation cap onto shaft À and use installation tool to press it in until the tool
contacts the housing. Remove the plastic cap.
Note:
Tests have shown that most cases of damage to the coolant pump can be attributed to the use of
unsuitable coolants.
Only the anticorrosion and antifreeze agents expressly approved by MAN Nutzfahrzeuge AG as
per MAN norm 324 (see brochure "Fuels, Lubricants, Coolants for and MAN Diesel Engines")
guarantee faultless operation
and low-temperature parts
1 2
50
3 4
5