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Electrical: Engine Starting, Charging
I could have the mechanics check-out.
[Response: Van Audekerce Remi/Brandon] I have seen this quite a few times and it
was always a short in the wiring harness that engages the starter when the engine
is running. Most likely the place were the wires have rotted is where the wiring
harness runs near the diesel pump. Cut the black sleeve open and check the wiring,
most likely the wire insulation will fall apart. Check ground connections, the wiring
harness, and battery condition. With a diesel starter requiring 2 kilowatts that
comes out to 250 amps at 8.0 volts cranking. Any slight resistance will slow things
down in a hurry.
[Noel DeSouza]In my case, the grounding wire going from the battery to the
engine was bad, so check the obvious first. Use one side of a battery jumper wire
clamped so as to ground the starter body (the head of the starter-bolt is a good
spot to clamp) and the other side clamped to the negative post of the battery, then
try starting again. If it turns over, the ground wire or connections are bad.
Alternator and Charging:
Alternator Mounting Bushings. [Editor] Over time, the three rubber bushings
securing your alternator in its engine bracket can compress, allowing the pulley to
become misaligned with the crank pulley and accelerating belt noise and wear. You
can replace these with OEM rubber bushings or aftermarket polyurethane, which
are more robust and do not compress as easily. The latter may be had from IPD.
To replace your bushings:
Disconnect battery negative terminal
Use penetrant oil to loosen the tension adjusting, securing, and bracket nuts
but don't soak the belt
Unscrew the 10mm tensioner adjusting bolt beneath the side of the alternator
by about 1.5 cm. Remove the belt from the pulley.
Loosen the 12mm bottom securing nut and remove it from the adjusting
assembly
Loosen the top long bolt and nut (12 & 13mm) supporting the alternator in its
bracket
Remove the bottom nut and bolt (12 & 13mm) holding the alternator to the
bracket
Swing the alternator up. Using a screwdriver, push out the old bottom bushing
and replace it
Swing the alternator back down and replace the bottom bracket bolt and nut
Remove the top long bolt and nut and swing the alternator back to replace the
two top bushings
Replace the top bolt and nut and the securing nut
Tighten the bracket nuts (not the securing nut!) and retension the alternator
belt so you can press it down about 1/4 inch under moderate finger pressure
Once you tension it, tighten the securing nut firmly and then back off the
adjusting bolt so it bears no tension from the belt
Reconnect the battery negative terminal
If you are interested in replacing the four air conditioning compressor bushings, see
the
FAQ
file.
file:///C|/Users/Steve/Documents/Volvo%20FAQ%20Updated/ElectricalStarting.html[01/13/14 10:02:47 PM]
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