Climate Control System - Removal and Installation: Maintenance Volvo C70 II

DRAINING THE ENGINE COOLANT

Remove the expansion tank cap.

Open the holder for the radiator hoses behind the engine to expose the lower radiator hose to the water pump.

Raise the vehicle.

Remove the shield under the vehicle. It is secured with 7 clips. See the illustration.

Install a hose on the nipple at the radiator. Feed the hose down to a container. Open the nipple and drain off the coolant.

Scheme 12

Remove

1. the screw holding the water pump and rubber mounting. See the illustration
2. the connector.

Pull the water pump forward a little.

HINT: Mark the location of the hoses at a suitable point on the water pump.

Install hose clips on both coolant hoses, as close to the water pump as possible. Position a container under the water pump.

Disconnect the hoses.

Note. For tightening torques, see: TIGHTENING TORQUE .

Scheme 13

The water pump for the engine coolant heater has a rubber-mounted mounting. The lower section is hooked onto the mounting bracket on the vehicle.

Install

1. the hoses using new hose clamps according to any markings. Remove the hose clips
2. the water pump and mounting, 1 x M6. Tighten HINT: Hook the lower reverse of the rubber mounting in the mounting. This facilitates locating the thread hole and correct mounting.
3. the connector.

Close the drain nipple. Remove the hose.

Fill with coolant. Run the engine until the thermostat opens. Top up if necessary.

DRAINING THE AIR CONDITIONING (A/C) SYSTEM

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the AC-system according to: REFRIGERANT, DRAINING .

DRAINING COOLANT AND REMOVING COMPONENTS

Remove the expansion tank cap.

Raise the vehicle.

Remove the shield under the vehicle. It is secured with 7 clips. See the illustration.

Install a hose on the nipple at the radiator.

Feed the hose down to a container.

Open the nipple. Drain off the engine coolant.

Scheme 14

Remove the dashboard. See: DASHBOARD .

Scheme 15

Remove

1. the 2 screws and remove the right-hand half of the lead-in. See the illustration
2. the section that holds the heat exchanger and evaporator pipes apart.

Scheme 16

Lift up both air conditioning (A/C) hoses from their mountings below the right-hand spring strut turret.

Remove the 1 screw securing the air conditioning (A/C) pipes to the evaporator. See the illustration.

Pull the pipes off from the evaporator connection.

Separate the pipes to the hear exchanger as follows

see HEAT EXCHANGER

Scheme 17

Remove

1. the drainage hose from the lower connection on the right-hand side under the heat exchanger housing
2. the climate control unit.

Note. For tightening torques, see: TIGHTENING TORQUE .

DRAINING THE AIR CONDITIONING (A/C) SYSTEM AND REMOVING THE COVER

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system (air conditioning).

Drain the refrigerant from the AC-system according to: REFRIGERANT, DRAINING .

Raise the vehicle.

Remove the drive belts. See: ACCESSORY DRIVE BELT TENSIONER .

Remove the cover under the vehicle. It is secured with 7 clips.

Scheme 18

Remove

1. the connector to the magnetic clutch
2. the pipe connections for the compressor (1) and (2).

Scheme 19

1. the 3 mounting screws for the compressor.

Remove the compressor.

Note. For tightening torques, see: TIGHTENING TORQUE .

DRAINING THE AIR CONDITIONING (A/C) SYSTEM AND REMOVING COMPONENTS

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the air conditioning (A/C) system. See: REFRIGERANT, DRAINING .

Remove

1. right-hand front headlamp. See: «HEADLAMP BULB»(ref-488515-S37216589842012072500000)
2. front bumper cover. For model years 2006-2009, see «COVER BUMPER FRONT (2006-2009)»(ref-488714-S04206131282012072500000) . For model years 2010-2012, see «COVER BUMPER FRONT (2010-2012)»(ref-488714-S39463998402012072500000)

Remove

1. the front edge of the right-hand fender liner
2. the plastic nut, x 1
3. the retaining clip against the engine cover under the vehicle.

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the air conditioning (A/C) system. See: REFRIGERANT, DRAINING .

Remove

1. right-hand front headlamp. See: «HEADLAMP BULB»(ref-488515-S21082668112012072500000)
2. front bumper cover. For model years 2006-2009, see «COVER BUMPER FRONT (2006-2009)»(ref-488714-S04206131282012072500000) . For model years 2010-2012, see «COVER BUMPER FRONT (2010-2012)»(ref-488714-S39463998402012072500000)

Remove

1. the front edge of the right-hand fender liner
2. the plastic nut, x 1
3. the retaining clip against the engine cover under the vehicle.

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the AC-system according to: REFRIGERANT, DRAINING .

Scheme 20

Remove

1. front bumper cover. For model years 2006-2009, see «COVER BUMPER FRONT (2006-2009)»(ref-488714-S04206131282012072500000) . For model years 2010-2012, see «COVER BUMPER FRONT (2010-2012)»(ref-488714-S39463998402012072500000)
2. the left-hand headlamp. See: «HEADLAMP BULB»(ref-488515-S37216589842012072500000)
3. the 2 screws (1) and (2) at the condenser connection (see the illustration)
4. the air conditioning unit. See: «RADIATOR»(ref-488475-S38057529552012072500000) .

Scheme 21

Press in the catch. Carefully pry off both sides using a screwdriver.

Remove the condenser from the air conditioning unit.

Note. For tightening torques, see: TIGHTENING TORQUE .

Scheme 22

Fill the condenser with oil. See AC-SYSTEM, OIL, REFILLING .

Press the condenser into the mounting points.

Note. Ensure that both retaining clips secure the condenser.

DRAINING THE A/C SYSTEM

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

DRAINING COOLANT AND REMOVING THE COVER

Remove the expansion tank cap.

Raise the vehicle.

Remove the shield under the vehicle. It is secured with 7 clips. See the illustration.

Install a hose on the nipple at the radiator.

Feed the hose down to a container.

Open the nipple. Drain off the engine coolant.

Disconnect the quick-release connectors for the cooler hoses at the cowl panel in the engine compartment.

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the air conditioning (A/C) system. See: REFRIGERANT, DRAINING .

Scheme 23

Clean the join thoroughly.

Slacken off the cap nut.

Note. Make a note of the position of the expansion valve in the pipe.

Pull or work out the expansion valve. See the illustration. It is not screwed in place.

HINT: The expansion valve can be removed using round-nosed pliers.

Scheme 24

(A) shows an approved expansion valve.

If 4 or 5 filter sections in the expansion valve are clogged (B) , the compressor oil must be inspected.

If the filter is extremely clogged or if it contains a large volume of metal particles, the compressor may need to be replaced.

If the compressor oil is black or very dirty, replace the compressor.

If the compressor is dry, replace the compressor.

DRAINING REFRIGERANT

Drain the refrigerant from the system. See REFRIGERANT, DRAINING .

Scheme 25

Remove the needle valve in the service valve. Use: see 9511204 .

Drain the refrigerant from the system. See REFRIGERANT, DRAINING .

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the AC-system according to: REFRIGERANT, DRAINING .

Read the instructions for slow and fast leaks according to: AC-SYSTEM, OIL, REFILLING .

Note. Plug the pipes and connections when working on the climate control system.

Drain the refrigerant from the air conditioning (A/C) system. See: REFRIGERANT, DRAINING .

Scheme 26

Remove

1. the coolant reservoir (1) but leave the hoses in place. Place the reservoir on the valve cover
2. the power steering fluid reservoir and hoses (2) from its mounting by pulling it upwards at an angle.

Remove

1. the ground strip (3) from the connection at the right-hand suspension turret
2. the 2 switches (4) for the air conditioning (A/C) system pressure sensor from the air conditioning (A/C) pipes / hoses
3. front bumper cover. For model years 2006-2009, see «COVER BUMPER FRONT (2006-2009)»(ref-488714-S04206131282012072500000) . For model years 2010-2012, see «COVER BUMPER FRONT (2010-2012)»(ref-488714-S39463998402012072500000)