Question 1

How to install the A/C Accumulator between the condenser and evaporator on the A/C evaporator tube on Buick Century?

Accepted Answer

Before installing the A/C Accumulator which has ac p/n 15-1696 between condenser and Evaporator on the a/c Evaporator tube it is necessary to perform a leak test with the halogen leak detector (J 39400-A) on each fitting after completion. Start by extracting the refrigerant before removing the Evaporator tube from the motor vehicle to proceed. Use a tubing cutter to cut the Evaporator tube at 110 mm (4.3 in) distance from the condenser block fitting end while making sure metal shavings stay outside of the tube. Cut the tube again at 60 mm (2.4 in) while properly removing all burrs from the cut surfaces. When preparing to fit ferrules to the Evaporator tube remove the o-ring that was inside the A/C Accumulator. Fit one flare nut along with one ferrule to the Evaporator tube so the tapered end faces the flare nut before fully seating the A/C Accumulator to the tube by directing it towards the Evaporator with proper tightening to 15 n.m (11 lb ft). Seal the second half of the Evaporator tube by applying torque to both parts just like the first side. Reinstall the accumulator after the flare nuts are loosened while properly aligning the arrow marker towards the Evaporator and tightening both flare nuts to 15 n.m (11 lb ft). Installation of the Evaporator tube to the condenser tube must be done before you remove the air cleaner assembly and execute evacuation and recharging of the a/c system.

Question 2

How to replace the A/C Accumulator in a system on Buick LeSabre?

Accepted Answer

Recovery of refrigerant must proceed before disconnecting the negative Battery Cable. The first step involves disconnecting the accumulator cover while also detaching the evaporator hose from the accumulator cover. Subsequently disconnect the positive Battery Cable from the underhood fuse block as well as its associated nut before completing removal. The first process is to remove the accumulator cover followed by loosening the a/c compressor hose nut on the accumulator. Disconnecting the a/c compressor hose along with the evaporator hose from the accumulator completes this step. The technician shall install the new accumulator into the housing using fresh sealing washers after adding correct refrigerant oil amounts to it. Install the evaporator hose onto the accumulator while torquing the evaporator hose nut to 20 n.m (15 lb ft). Connect the a/c compressor hose to the accumulator while installing the a/c compressor hose nut then tight it to 20 n.m (15 lb ft). The technician should reinstall the accumulator cover before connecting the evaporator hose into its retainer then install the positive Battery Cable along with the underhood fuse block nut which should be tightened to 15 n.m (11 lb ft). The service ends with connecting the negative Battery Cable while charging the a/c system before using the halogen leak detector (J 39400-A) to test the fittings for leaks.

Question 3

How to install the A/C Accumulator (A/C Delco P/N 151696) to the A/C evaporator tube on Buick Regal?

Accepted Answer

The first step to install the A/C Accumulator (A/C Delco P/N 151696) involves refrigerant retrieval before positioning it on the a/c Evaporator tube between the condenser and Evaporator. Apply a tubing cutter just before the condenser block fitting end to cut the Evaporator tube at a measurement of 110 mm (4.3 inches) while being cautious not to allow metal shavings into the tube. You should next cut a second section of Evaporator tube to 60 mm (2.4 in) and implement burr removal from both ends of the tube. Removal of the o-ring from the A/C Accumulator should be performed before inserting ferrules into the Evaporator tube. The tapered aspect of the ferrule should face the flare nut when installing one nut and one ferrule onto the Evaporator tube so that the A/C Accumulator rests completely against the tube with its arrow facing toward the Evaporator. Torque the flare nut to 15 n.m (11 lb ft). Perform the same method to apply the remaining flare nut to the second half of the Evaporator tube and maintain the same torque value. The technician needs to first remove the A/C Accumulator by loosening the flare nuts followed by placing lubricating the o-ring and installing it on each end of the Evaporator tube to make sure the accumulator sits properly against the ferrules for successful o-ring seating. Reinstall the A/C Accumulator by turning its arrow toward the Evaporator and tighten its flare nuts to 15 n.m (11 lb ft). The final steps include putting back the Evaporator tube to its position on the condenser tube followed by air cleaner assembly removal before evacuating and recharging the a/c system with halogen leak detector (J 39400-A) for fitting evaluation.

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