Hatz 1D81. - Troubleshooting Engine Malfunctions; Engine Wont Start or Starts Slowly

30
6. Malfunctions – Causes – Remedies
Malfunction Possible causes Remedial action Chap.
Engine will not
start or start is
delayed, although
it can be turned
over with the
starter.
Also applicable for
engines with me-
chanical oil pres-
sure monitoring.
At low tempera-
tures.
Speed control lever is in stop or
idle position.
Stop lever in stop position.
No fuel reaching injection pump.
Compression too low:
- Valve clearances incorrect
- Cylinder bore and/or piston
ring wear
Injector not operating correctly.
Oil pressure lost.
Lower starting temperature limit
exceeded.
Machinery not uncoupled.
Defective preheat system
(optional extra).
Set lever to „START“-position
Add. fuel.
Check entire fuel supply system
carefully.
If no fault is found:
- supply line to engine
- fuel filter
- Function of delivery pump
must be checked.
Check valve clearances, adjust if
necessary.
See workshop manual.
See workshop manual.
Check engine oil level.
Activate mechanical oil pressure
monitor.
Comply with cold starting
instructions.
Operate preheat system
(optional extra).
Disengage engine from machin-
ery or equipment if possible.
See workshop manual.
4.2.
4.1.3.
4.1.4.
5.4.1.
4.1.3.
5.3.3.
5.2.1.
4.1.4
4.2.4.
4.2.5.