Correct oil level in refrigerant compressor (A9)

AR83.55-T-5260BAC

Correct oil level in refrigerant compressor (A9)

06.06.2019

Model

NMB613.358/388 with engine 457.944

with code HKD (Konvekta ACX 640 air conditioning with roof heater)

Model

NMB613.358/388 with engine 457.944

with code HKF (Webasto Top 2002 Aerosphere air conditioning with roof heater)

Shown on model 613.358 with code HKD (Konvekta ACX 640 A/C with roof heater)

1

Pressure-side testing and filling valve

2

Intake-side testing and filling valve

3

Pressure-side shutoff valve

4

Intake-side shutoff valve

5

Refrigerant compressor

Shown on model 613.388 with code HKF (Webasto Top 2002 Aerosphere A/C with roof heater)

1

Pressure-side testing and filling valve

2

Intake-side testing and filling valve

3

Pressure-side shutoff valve

4

Intake-side shutoff valve

5

Refrigerant compressor

Shown on model 613.388 with code HKF (Webasto Top 2002 Aerosphere A/C with roof heater)

5

Refrigerant compressor

6

Filling screw

7

Inspection glass

8

Drain screw

9

V-belt

10

Alternator

13

Drain screw

Correct oil level

 Danger

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained.

AS83.00-Z-0001-01A

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

1

Remove protective caps from pressure-side testing and filling valve (1) and from intake-side testing and filling valve (2)

2

Connect A/C suction and recycling equipment to pressure-side testing and filling valve (1) and intake-side testing and filling valve (2)

 Pay attention to the operating instructions of the A/C suction and recycling equipment.

3

Remove protective cap from pressure-side shutoff valve (3) and protective cap from intake-side shutoff valve (4)

4

Screw in pressure-side shutoff valve (3) and intake-side shutoff valve (4) completely

5

Extract refrigerant from refrigerant compressor (5) using A/C suction and recycling equipment

 Observe the following:
Slowly open valve of A/C suction and recycling equipment.
Extract the refrigerant until no weight increase in the extracted refrigerant is detectable.
After the successful extraction of the refrigerant, close valve of A/C suction and recycling equipment.
Note down extracted quantity of refrigerant.

6

Remove filling screw (6)

7

Fill missing quantity of oil into refrigerant compressor (5)



Compressor oils (specification 362.0)

BB00.40-P-0362-00A


Only oils that comply with the Specifications for Operating Fluids are to be used,
otherwise, the refrigerant compressor (5) may be damaged.

 Pour oil into refrigerant compressor (5) until the oil level is near the top of the inspection glass (7).
The oil for the refrigerant compressor (5) is hygroscopic (it attracts water). Immediately close the oil reservoir tightly and pour the measured quantity of oil into the refrigerant compressor (5) immediately.

8

Screw in filling screw (6) with new seal.

 Bolt, refrigerant compressor oil replenishment

*BA83.55-N-1004-01G

 Torque wrench

*000589642100

9

Evacuate refrigerant compressor (5)

 Evacuate refrigerant compressor (5) to maximum achievable vacuum, but for at least 30 minutes.

10

Unscrew pressure-side shutoff valve (3) by 3 to 5 turns

11

Pour refrigerant into system via pressure-side testing and filling valve (1)

 Only the quantity noted down during extraction.

12

Close valve of A/C suction and recycling equipment

13

Unscrew pressure-side shutoff valve (3) and intake-side shutoff valve (4) completely

14

Attach protective cap to pressure-side shutoff valve (3) and protective cap to intake-side shutoff valve (4)

15

Remove A/C suction and recycling equipment

16

Attach protective caps to pressure-side testing and filling valve (1) and to intake-side testing and filling valve (2)

17

Close liftgate

 Refrigerant compressor

Number

Designation

ENGINE 457.944 in MODEL 613.358/388 with CODE HKD

ENGINE 457.944 in MODEL 613.358/388 with CODE HKF

BA83.55-N-1004-01G

Bolt, refrigerant compressor oil replenishment

3/8"

Nm

60

60

M221.5

Nm

100

100

M241.5

Nm

100

100

M261.5

Nm

80

80