174019 Removing and installing oil/water heat exchanger

WM 174019 Removing and installing oil/water heat exchanger

Tools





Technical values






Information

Overview





Overview of oil/water heat exchanger






Preliminary work

1. Disconnect battery.
-> 271000 Work instructions after disconnecting the battery - section on "Disconnecting".
2. Remove pressure pipe.
-> 214119 Removing and installing pressure pipe - section on "Removing".
3. Remove air cleaner housing.
-> 242519 Removing and installing air cleaner housing - section on "Removing".
4. Remove fuel filter.
-> 206019 Removing and installing fine fuel filter - section on "Removing".

DANGER

Risk of engine falling down.

- Danger of fatal injury, material damage.

-> Support the engine with the prescribed tool.

5. Lower engine.
Lower the engine by max. 40 mm.
Support the engine using a jack with retainer plate P 9592.
Loosen and screw off M12 collar nuts on the engine mounting. Carefully lower the engine using the jack.
6. Remove left intake-air distributor.
-> 24461900 Removing and installing intake-air distributor - section on "Removing".
7. Drain coolant.
-> 193817 Draining and filling coolant - section on "Draining".

Removing oil/water heat exchanger

Removing large oil/water heat exchanger

1. Disconnect lines from the oil/water heat exchanger.
1.1. Move fuel line with plastic mounting -2- in the direction of the arrow and lay it to one side.





Disconnecting and connecting oil/water heat exchanger

1.2. Pull off coolant vent lines -1- from the oil/water heat exchanger.





Vent lines on oil/water heat exchanger

1.3. Remove cycle valve -2- for active carbon filter.





Removing and installing cycle valve

1.4. Remove hose from clip and lay to one side.
2. Remove oil/water heat exchanger.

Information

Oil and coolant will flow out when the oil/water heat exchanger is removed.

Place a cloth underneath the heat exchanger and cover the generator to prevent contamination and subsequent damage to engine components.

2.1. Remove screws -1-. Lift large oil/water heat exchanger and remove it.





Large oil/water heat exchanger

Removing small oil/water heat exchanger

Information

Oil and coolant will flow out when the oil/water heat exchanger is removed.

Place a cloth underneath the heat exchanger and cover the generator to prevent contamination and subsequent damage to engine components.

1. Remove cycle valve for active carbon filter.
1.1. Pull off cable plug -3- and vacuum line -2-. Pull cycle valve for active carbon filter -1- out of the bracket and remove it.





Removing and installing cycle valve

2. Disconnect lines from the oil/water heat exchanger.





Oil breather hose

2.1. Disconnect oil breather hose -2- from the oil tank.
2.2. Pull off coolant vent lines -1- from the oil/water heat exchanger.





Vent lines on oil/water heat exchanger

Information

Oil and coolant will flow out when the oil/water heat exchanger is removed.

Place a cloth underneath the heat exchanger and cover the generator to prevent contamination and subsequent damage to engine components.

3. Remove oil/water heat exchanger.
3.1. Unscrew screws -1- and remove oil/water heat exchanger -2-.





Small oil/water heat exchanger

Installing oil/water heat exchanger

Installing large oil/water heat exchanger

1. Replace O-rings.
1.1. Clean sealing faces for large oil/water heat exchanger, remove escaping oil and coolant from the engine housing.
Insert O-rings -1- and grease with Kluber Syntheso Glep (Part No. 000.043.204.68).





O-rings for oil/water heat exchanger

2. Install oil/water heat exchanger (cleanliness is essential).
2.1. Lift large oil/water heat exchanger and insert it in installation position. Fit and tighten screws -1-.
=> Tightening torque: 10 Nm (7.5 ftlb.)





Large oil/water heat exchanger

3. Connect lines to the oil/water heat exchanger.
3.1. Connect coolant vent lines -1- to the oil/water heat exchanger.





Vent lines on oil/water heat exchanger

3.2. Install cycle valve -1- for active carbon filter.





Removing and installing cycle valve

3.3. Press hose into the clip.
3.4. Place fuel line on oil/water heat exchanger -1- and move plastic mounting -2- in the direction of the arrow.





Fuel line on oil/water heat exchanger

Installing small oil/water heat exchanger

1. Replace O-rings.
1.1. Clean sealing faces for the small oil/water heat exchanger, remove escaping oil and coolant from the engine housing.
Insert O-rings -2- and grease with Kluber Syntheso Glep (Part No. 000.043.204.68).





O-rings for oil/water heat exchanger

2. Install oil/water heat exchanger (cleanliness is essential).
2.1. Position oil/water heat exchanger -2-. Fit and tighten screws -1-.
=> Tightening torque: 10 Nm (7.5 ftlb.)





Small oil/water heat exchanger

3. Connect lines to the oil/water heat exchanger.
3.1. Connect oil breather hose -2- to the oil tank.





Oil breather hose

3.2. Connect coolant vent lines -1- to the oil/water heat exchanger.





Vent lines on oil/water heat exchanger

4. Install cycle valve for active carbon filter.
4.1. Push on cable plug -3- and vacuum line -2-. Insert cycle valve for active carbon filter -1- into the bracket.





Removing and installing cycle valve

Subsequent work

1. Install left intake-air distributor.
-> 24461900 Removing and installing intake-air distributor - section on "Installing".
2. Raise the engine.
Lift the engine using a jack and retainer plate P 9592 in the assembly position.
Screw in and tighten M12 collar nuts.
=> Tightening torque: 85 Nm (63 ftlb.)
3. Install fuel filter.
-> 206019 Removing and installing fine fuel filter - section on "Installing"
4. Install air cleaner housing.
-> 242519 Removing and installing air cleaner housing - section on "Installing"
5. Install pressure pipe.
-> 214119 Removing and installing pressure pipe - section on "Installing"
6. Fill in coolant and bleed the system.
-> 193817 Draining and filling coolant - section on "Filling"