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To correct the belt tension, proceed as follows:
1. Loosen bolts (2 and 3).
2. Loosen lock nut (4).
3. Tighten bolt (5) until marker (1) points at the maximum mark
(6).
4. Tighten lock nut (4) and bolts (2 and 3).
2
7
6
1
4
5
3
Problem
1.
Lamp H1 does not light
up when pressing S1.
2.
Starter motor does not
crank engine after
pressing S1 and
depressing S3.
3.
Starter motor cranks
engine when depressing
S3, but engine does not
fire.
4.
Engine fires but lamp H1
remains alight.
5.
Engine starts but shuts
down after approx. 10
seconds.
1. Marker
2. Bolt
3. Bolt
4. Lock nut
5. Regulation bolt
6. Maximum mark
7. Minimum mark
Possible faults
a. Defective or discharged batteries.
b. Loose battery cable(s) or terminals
oxidized.
c. Loose connection or damaged wiring.
d. Alternator/regulator defective.
a. Low battery output.
b. Air receiver pressure above 1.6 bar.
c. Start solenoid K0 or starter motor
defective.
a. Engine stop solenoid Y1 defective.
a. Alternator drive belt broken or slipping.
b. Alternator/regulator defective.
a. Fuel tank contains insufficient fuel.
b. Insufficient engine oil pressure.
c. Engine oil pressure switch S5 or
compressor temperature switch S7, S8
defective.
PROBLEM SOLVING
The troubleshooting chart helps to solve mechanical problems.
It is assumed that the engine is in good condition and that there is
adequate fuel flow to the filters and injection equipment.
If the engine has stopped through a shutdown switch, only one
restarting attempt is permitted while tracing the fault.
Always check the alarm lamps during starting, as the lamps indicate
which switch has tripped, thus assisting in tracing the trouble. Any
bulb can be replaced.
An electrical fault must be traced by an electrician. Make sure that
the wires are not chafed, damaged or broken and that they are
clamped tight to their terminals.
Never carry out measurements on the instrument panel.
!
Measurements on the wiring of the instrument panel may
only be carried out after disconnecting the wiring from
the instrument panel.
A
LTERNATOR PRECAUTIONS
1. Never reverse the polarity of the batteries or alternator.
2. Never break any alternator or battery connections while the
engine is running.
3. When recharging the batteries, disconnect them from the
alternator. Before using booster cables to start the engine, be
sure of the polarity and connect the batteries correctly.
Corrective actions
a. Check electrolyte level and charge of batteries. If no
cells are shorted and batteries are discharged, trace
cause and correct.
b. Check and correct as necessary.
c. Check wiring and connections. Correct as necessary.
d. Disconnect the wire from alternator terminal D+ and
connect it to terminal B-. If H1 lights up, replace the
alternator.
a. See remedy 1a.
b. Wait until air receiver is completely depressurized.
c. Check start solenoid K0. Have motor repaired, if
necessary.
a. Check and correct or replace as necessary.
a. Check and correct as necessary.
b. Have assembly repaired.
a. Fill fuel tank.
b. Stop at once, consult "Operating Instructions" book of
the engine.
c. Stop at once, test switches, replace as necessary.
I
NSTRUCTION MANUAL
19
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