Volvo D4, Operator'S Manual

Page: 74 / 126

72
Maintenance. Freshwater system
Draining fresh water system
Remove the filler cap on the expansion tank (to allow
the coolant to run out faster). Use a suitable receptacle
while draining.
There is a hose mounted on the intercooler. Move the
hose and connect it to the drain nipple (1). Open the
drain nipple by carefully screwing the nipple. Use a no.
17 block spanner if the nipple sticks. Drain all coolant
and screw in the nipple by hand.
Move the hose and then continue to drain the coolant
from the drain nipple (2) on the engine block.
NOTE! Leave the old coolant to a facility for destruc-
tion
Checking coolant level
WARNING! Do not open the engine coolant
system filler cap when the engine is still hot ex-
cept in an emergency. Steam or hot coolant may
spray out.
Turn the filler cap slowly counter clockwise and let
any pressure escape from the system before remov-
ing the cap. Top up coolant if necessary. The coolant
level should be between the MAX and MIN marking
on the expansion tank. Reinstall the filler cap.