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5.1.12. Removal and installation of an additional heater of STH (at the corresponding complete set)

Details of installation of an additional heater (model 463.250/323, H12 code)

1 — the Final hose of a cooling path
2 — the Inlet hose of a cooling path
3 — the Fuel line
4, 5 — Couplings

6 — Bandages
7 — the Exhaust pipe
8 — Fixing bolts
A6 — the Block of an additional heater (STH)

 PERFORMANCE ORDER

  1. The car also establish to Poddomkratta it on props.
  2. Remove protection of a case.
  3. Empty the cooling system (see the Head the Current leaving and service).
  4. Disconnect inlet (2) and final (1) hoses of a cooling path from assemblies of a heater of STH and the water pump.
  5. Disconnect the fuel line (3) from assembly of a heater of STH (A6), - prepare for collecting the spilled fuel.
  6. Having released bandages (6), disunite couplings (4 and 5) of an electrical wiring, - bandage tapes are subject to replacement without fail.
  7. Disconnect from a heater of STH (A6) an exhaust pipe (7).
  8. Turn out fixing bolts (8) and remove assembly of an additional heater of STH (A6).
  9. Remove the circulation pulser (see the Section Removal and installation of the circulation pulser of an additional heater of STH (at the corresponding complete set)).
  10. Installation is made upside-down.
  11. In conclusion remove air from a path of the cooling system and check the corresponding components for existence of signs of development of leaks.
  12. Start an additional heater and make sure of serviceability of its functioning, - if the heater is disconnected automatically before achievement by temperature of cooling liquid of normal working value and cannot be restarted, therefore in system false blocking works, - drive away the car on HUNDRED Mercedes-Benzs for performing detailed diagnostics with use of the reader STAR DIAGNOSIS (6511 1801 00).