A/C - Concrete Like Odor

SECTION:
8

GROUP
87

NO.
833

DATE
Apr.-97

Additional remedies before replacing evaporator
850

REFERENCE: TP 31861/2 SECTION 8(87) CLIMATE CONTROL; 850 1992-

Additional remedies before replacing evaporator

Background:
The evaporator in the A/C system has a surface coating which can occasionally give rise to a concrete-like odor. To prevent this the evaporator is treated with an agent (P/N 1161454-2) which is sprayed on the outside of the evaporator before installation in the car.

Treatment:
When replacing evaporator the new evaporator should be treated with an odor eliminator before installing in the climate control system. The treatment should be carried out before beginning other work to allow the evaporator to dry.

Materials:
Odor eliminator A/C (liquid agent), P/N 1161454-2.

Read warning text on pack before commencing work. Use protective goggles and gloves during spraying. Ensure that ventilation is good.

Tools:
Compressed air spray for liquids, for example, the Volvo anti-corrosion agent spray P/N 1159611-1. Protective goggles 9985592-6 and protective gloves 9986064-5.

Assembling the air spray





- Fit flat nozzle to Volvo anti-rust spray and clean nozzle.

- Shake A/C Odor eliminator container thoroughly and place in spray holder.

- Insert spray riser pipe in container and screw spray onto holder.

- Set spray to green mark.

- Connect compressed air to spray.

Do not tilt the spray excessively! Tilting spray excessively may cause liquid to escape from container.

If liquid escapes from the container empty it back in and complete the operation.

Treating a new evaporator

Treatment with odor minimizing agent before installing in car.

Preparations:





- Place evaporator in a basin.

- Treat evaporator with "odor treatment AC", P/N 1161454-2.

- Turn the evaporator during treatment so that all exterior surfaces are covered by the agent.

- Ensure that the agent passes through the cooling flanges properly.





- Place the evaporator so that any excess runs off.

- Allow the evaporator to dry before installing.

- Install the evaporator according to the description in the Service Manuals on the next page.

Note:
Always use protective goggles and protective gloves.

See also following Service Manuals and Service Bulletins.

Replacing evaporator

- See Service Manual:
Section 8(87)
Climate control
850 1992-
Page 143 - 146.

Replacement of receiver and/or receiver drier

- See Service Manual:
Section 8(87)
Climate control
850 1992-
Page 159 - 161.

Service Bulletin no. 8-87-826.

WARRANTY STATEMENT: Claims may be submitted under the New Car Limited Warranty when a manufacturing defect is present using claim type: 01

Operation No. Labor description Time allowance

87931-3 Evaporator treatment 0.2 hr