812
Thermo H plus
8 Repairs
) using suitable pinch-
off pliers.
4. Loosen hose clamps (8) and pull the coolant hoses (7)
from the coolant inlet (6) and the coolant outlet (5).
5. If necessary, loosen the exhaust line clamp on the
exhaust outlet (3) and remove extension/deflection.
6. Disconnect grounding cable from the housing (12,
).
7. If necessary disconnect the combustion air suction
line from the heater.
NOTE:
Make sure that any fuel leaking during the following work
step is immediately bound and professionally disposed of.
8. Unscrew the fuel lines and seal with blank plugs.
9. Seal the fuel supply and return openings on the heater
with blank plugs.
10. Remove the 4 nuts (each with washer), securing the
heater to the vehicle structure and remove the heater
from the vehicle.
Installation
1. Check the voltage-free state at all supply lines to the
heater (
Observe
!
).
2. Place the heater into the installation position and
secure with 4 nuts and 4 washers via the vibration
) to the vehicle. Tighten nuts as
required.
3. Reconnect the fuel lines for fuel supply and fuel return
to the heater, using for each a hollow screw and two
gasket rings.
4. Connect the grounding cable to the housing (12,
).
5. If necessary, install the extension/deflection onto the
exhaust outlet (3,
) using a hose clamp .
6. Fit coolant hoses (7) onto the coolant inlet (6) and coo
-
lant outlet (5) and secure with hose clamps (8).
7. Remove pinch-off pliers from the coolant hoses (7).
8. Connect the D heater with the vehicle electrical
system.
– Connect the heater wiring harness to the D heater.
).
10. Bleed coolant circuit (see
).
11. Restore all supply cable connections from vehicle
electrical system.
– If necessary reconnect LV DC control wiring
.
– If necessary reconnect HV AC wiring harness to
.
– If necessary reconnect HV DC wiring harness to
.
12. Perform function test of the HV heater.
Summary of Contents for Thermo H 160
Page 47: ...memos...
