Cooling system
Checking of pressure valve in filler cap
2.
3.
Release the hose clips and rem ove the rubber
muffs at the front and back of the heat exchanger.
Pull out the insert.
Special tool: 999 6662
1.
2.
3.
Drain off the refrigerant and connect the pressure
testing device with a nipple to one of the plugged
holes in the cooling system.
Flush and clean the insert inside and outside.
Clean also the housing.
Note: If there are loose deposits in the insert a suit-
able steel rod can be pushed through the tubes in
the opposite direction to the flow of water.
Extend the drain hose from the filler pipe with a
hose the end of which is placed in a vessel contain-
ing water.
NOTE! Make sure that the rod does not dam age
the tubes.
Apply the pressure and read off the manom eter
when the valve opens (water bubbles in vessel).
The valve should open at 0.9 kp/cm 2 (12.8 lbf/in 2).
4.
Fit the insert in the heat exchanger. NOTE! Make
sure that the insert is positioned correctly. Make
sure that the hole in the insert casing com es oppo-
site the hole in the housing and that the vent hole
comes upwards. The insert is marked with "UP".
4.
Rem ove the test equipm ent. Fit the plug and fill up
with refrigerant.
Place the insert so that its extruding parts are equal
at the front and back.
Cleaning of heat exchanger
Clean the heat exchanger insert on signs of blocking
5. Fit the rubber muffs on the heat exchanger�s front
and back and tighten the hose clips. Connect the
hose from the sea water pum p and tighten the clip.
(
slow rise in refrigerant temperature).
NOTE! Check/clean the sea water filter first. Check also
the
0
sea water pum p�s impeller and sea water intake.
Important! Close the bottom valve before
6. Fill up with refrigerant.
working on the cooling system .
7.
Open the bottom cock or the cock on the S-drive
and start the engine. Check that no leakage occurs.
1.
Drain off the water in the sea and fresh water sys-
tem s.
Fig. 106. Heat exchanger insert
65
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD2010, Volvo Penta MD2020, Volvo Penta MD2030, Volvo Penta MD2040 |
| Download File |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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Ö, hur dka jag veta om det är bra innan jag set produkten.
Pages 58 and 59 are missing from Volvo Penta MD2010 MD2020 MD2030 MD2040 Workshop Manual. I need only these pages at present!