Electrical system
Galvanic corrosion
Electric welding
MD201OB/C, MD2020B/C, MD203OB/C, MD204OB/C
Remove the plus and minus leads from the batteries,
and then remove all cables to the alternator.
The engine�s flywheel housing and transmission (re-
verse gear/S-drive) are electrically insulated from the
engine. Note the fitting sequence on the screw union
(Fig. 113). The insulation sleeve pos. 1 is only fitted on
one of the screws (optional screw).
Always connect the welding clip to the component
which is to be welded and as close to the weld point as
possible. The clip must never be connected to the en-
gine or so that the current can pass over a bearing.
Q
WARNING! The flywheel housing or transmission
On completion of welding: Always connect the
cables to the alternator before the battery leads
are replaced.
0
(reverse gear alt. S-drive) must under no circum-
stances be earthed. Earthing of these compo-
nents can result in serious damage as a result of
galvanic corrosion.
Repair instructions
Starting with auxiliary battery
Note: If the start battery has frozen it must be thawed
first before a start attempt is made with the auxiliary
battery. Check that the battery is not damaged before
connecting it again.
1.
Check that the auxiliary battery�s rated voltage cor-
responds to the engine�s system voltage (12V).
2.
Connect the red auxiliary lead (+) to the auxiliary
battery and then to the flat battery. Then connect
the black auxiliary lead (-) to the auxiliary battery,
and finally to a point some distance from the flat
batteries, e.g. at the main switch on the minus lead
or at the minus lead�s connection on the starter mo-
tor (2-pole electrical system), or at the minus lead�s
connection on the engine (one-pole system).
3.
4.
Start the engine. NOTE! Do not touch the con-
nection during the attempt to start (risk for
sparks) and do not lean over any of the bat-
teries.
Remove the leads in exactly the reverse order to
the way they were connected. NOTE! The ordin-
ary leads to the standard battery must absolute-
ly not be disconnected.
Fig. 113. Electrical insulation (A) of the flywheel hous-
ing and transmission
1.
3.
Insulation sleeve
Washer
2. Insulation washer
71
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD2010, Volvo Penta MD2020, Volvo Penta MD2030, Volvo Penta MD2040 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.25 out of 5)
Marine readers have rated Volvo Penta MD2010 MD2020 MD2030 MD2040 Workshop Manual 4.3 out of 5.0 based on 4 product reviews. GOOD AND GOODER S=GOODEST. IS BESTER
jeg skal bruge manualen , til at samle min Volvo penta md 2030 igen.
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!