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MBE 4000 EGR THERMOSTAT HOUSING

The thermostat for the EGRengine has the same removal, installation, and checking instructions as for the non-EGRengine (refer to section ), but the thermostat housing cover is different by design to accommodate the EGRmodulated control valve mounting. See Figure 44235 . ‪

1. EGRModulated Valve Mounting Holes ‪

2. Thermostat Housing Cover Mounting Holes ‪

EGRThermostat Housing Cover

EGR Thermostat Housing Cover Removal

Remove the EGR thermostat housing cover as follows: ‪

  1. Remove the four bolts that attach the EGRmodulated control valve to the housing cover and remove the valve.
  2. Remove the three thermostat housing cover mounting bolts.
  3. Remove the two bolts that attach the reed valve housing bracket to thermostat cover. Remove bracket.
  4. Remove any other hose or fitting connections.

EGR Thermostat Housing Cover Installation

Install the EGRthermostat housing cover as follows: ‪

  1. Attach the thermostat housing cover to the thermostat housing using the three mounting bolts. Install the first bolt where heavy arrow is pointing in graphic. See Figure 44235 . Torque to 30 Nm (22 lbft).

    1. EGRModulated Valve Mounting Holes ‪

    2. Thermostat Housing Cover Mounting Holes ‪

    EGRThermostat Housing Cover Installation

  2. Install EGRmodulated valve to thermostat housing cover using four bolts.
  3. Attach reed valve housing bracket to thermostat cover.
  4. Install any other hose or fitting connections.