MBE 900 – Section 4.4 Front Connector Housing – Non-EGR Engine

Section 4.4
Front Connector Housing – Non-EGR Engine

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Section 4.4.1
Front Connector Housing Removal

Remove the front connector housing as follows:‪

PERSONAL INJURY ‪
To avoid injury from scalding, drain the radiator when the engine and coolant are cool.‪

1. Drain the coolant from the engine.
2. Remove the hose clamp attaching the (surge tank) coolant delivery hose to the front connector housing. See Figure "Front Connector Housing" .

   Note: Collect any coolant that runs out of the hose.

   

   1. Coolant Delivery Hose (from surge tank)‪	6. Electrical Connector‪
   2. Crankcase Breather Hose‪	7. Engine Coolant Temperature Sensor‪
   3. Front Connector Housing‪	8. Coolant Pump Connector Fitting‪
   4. Connector Housing Gasket‪	9. Mounting Bolt‪
   5. Oil Separator‪

   Figure 1. Front Connector Housing

3. Disconnect the wiring harness that runs to the coolant temperature sensor.
   1. Disconnect the electrical connector from the coolant temperature sensor located on the left-hand side of the front connector housing, just below the front lifting eye.
   2. Remove the clip that attaches the harness to mounting bracket for the crankcase breather hose.
4. Remove the mounting bolt attaching the crankcase breather hose to the front connector housing and the oil separator.
5. Remove the mounting bolt attaching the front connector housing to the cylinder head.
6. Pull the front connector housing upward until it comes free of the coolant pump connector fitting.
7. Discard the connector housing gasket and the coolant pump connector fitting.

Section 4.4.2
Front Connector Housing Installation

Install the front connector housing as follows:‪

1. Install a new connector housing gasket on the front connector housing.
2. Install a new coolant pump connector fitting on the coolant pump.
3. Install the front connector housing on the coolant pump connector fitting.
4. Install the front connector housing on the cylinder head. Tighten the mounting to bolt 25 N·m (18 lb·ft).
5. Connect the wiring harness that runs to the coolant temperature sensor.
   1. Connect the electrical connector to the coolant temperature sensor.
   2. Install the clip that attaches the harness to mounting bracket for the crankcase breather hose.
6. Install the mounting bolt attaching the crankcase breather hose to the front connector housing and the oil separator. Tighten the mounting bolt 25 N·m (18 lb·ft).
7. Install the hose clamp attaching the (surge tank) coolant delivery hose to the front connector housing.
8. Fill the engine with the removed coolant, and check for leaks and proper operation.