Expansion Block/Orifice Tube: Service and Repair

Tools Required:
J 26549-E Expansion Tube Remover
J 38042 Dual O-ring Joint Separator
J 39400 ACR 4 Machine

Important
- Brazed fittings are on the condenser and evaporator. These fittings cannot be turned because the fitting is brazed to the pipe. It is important that the service technician recognize which fitting is to be turned and use backup wrenches. The brazed fitting not to be turned is always the same color as the pipe it is brazed to (unpainted or unplatted aluminium).

Remove or Disconnect

- Recover refrigerant from A/C system.
1. Condenser outlet dual O-ring joint using J 38042.
2. Evaporator inlet dual O-ring joint using J 38042.
3. A/C line clips.
4. Expansion tube from line using J 26549-D.

Install or Connect

1. New expansion tube, with long screen toward condenser.
2. A/C line clips after positioning line.
3. Assemble evaporator inlet and condenser outlet dual O-ring joints simultaneously (hand tight) to assure correct line orientation, then tighten connections to specifications.

Tighten
- Dual O-ring joint connections to 24 N.m (18 lb. ft.).

- Evacuate, charge and leak test A/C system.