Man D 2840 LE 301, Repair Manual

Page: 51 / 194

Repairing coolant pump
49
Installation note for mechanical seal
Fit the mechanical seal “wet”, i.e. when fitting, coat holding sleeve
Ã
and coolant pump shaft
À
with a mix-
ture of 50% water and 50% cleaning spirit or 40% to 50% antifreeze as per MAN 324 and water.
Other anti-skid 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,
must be applied to collar
Á
.
Fit the seal with a plastic transportation cap
Â
onto shaft
À
and use installation tool to press it in until the
tool contacts the housing. Remove the plastic cap.
1 2 3 4
5
Note:
Tests have shown that most cases of damage to the coolant pump can be attributed to the use of
unsuitable coolants.
Only those anticorrosion and antifreeze agents expressly approved by MAN Nutzfahrzeuge AG
as per the MAN 324 standard (see brochure “Fuels, Lubricants ...”) will guarantee fault-free oper-
ation.