Maintenance
3-4L43C, 3-4M43, 3-4M43Z
84
HATZ
Manual
Procedure — Checking the fuel evaporator (vaporizer)
Step
Activity
1
Check the coiled filament for soot deposits and clean if neces-
sary (see section "Cleaning the fuel evaporator (vaporizer)").
2
Visually check the coiled filament for damage. If damage is vis-
ible, replace the coiled filament.
3
Blow out the fuel line connection (3) with compressed air.
Cover the fuel holes (4) in the evaporator housing with a cloth
when doing this to collect deposits and fuel splashes. If the fuel
holes are clogged, clean the evaporator housing (see section
"Cleaning the fuel evaporator (vaporizer)").
Procedure — Cleaning the fuel evaporator
Step
Activity
1
Brush off soot deposits from the coiled filament (2) with a cop-
per or brass wire brush (1).
2
Use a wire to carefully remove hard soot and carbon deposits
from the fuel holes (4). Then blow out the fuel line connection
again.
Procedure — Installing the fuel evaporator (vaporizer)
Step
Activity
1
Replace the copper ring (9), screw the coiled filament back into
the evaporator housing, tightening torque 55 Nm.
2
Screw the evaporator unit tightly onto the exhaust pipe.
Undamaged gaskets may still be used, replace the gasket if
damage is visible.
3
Connect the fuel hose and secure with the clamp.
4
Reconnect the electrical connection cable.
