Having problems with your 1992 Toyota Land Cruiser ?

Low and high side of the A/C system and type of refrigerant?

\015 Where is the low and the high side of the A/C system and what type of refrigerant for a 1992 toyota landcruiser\015 Posted / edited by AnonymousUser on : 18-11-2019

Answers :

Hello, and thank you for your question.
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\015\012The High side & Low side valves are located in the engine compartment, and can be found on the aluminum lines running from the condenser to the firewall (a bigger tube, this is the HIGH side), and from the firewall to the condensor (in front of the radiator), & back to the compressor (this is the LOW side/a smaller tube). Regarding the refrigerant, you may have a dilemma. Most LCs in 92 came with R-12 freon, and is very expensive to purchase, and, in some places, a license is needed to purchase it. Your system *** may *** have been retrofitted with the "new" style (the "enviromentally friendly" type R-134A) refrigerant. To determine this, look under the caps on the abovementioned tubes. If the metal fittings are small & threaded, you have the original system. If the fittings are large, and are screwed onto a smaller fitting, and are grooved at the center of the upright stem, you have the newer style. You would also have rather large caps with a "H" ans an "L" imprinted on them. If you need to add refrigerent, add whatever refrigerant required into the LOW side, until the bubbles seen in the sight glass adjjacent to the radiator (on the Low side tube) disappear.
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Repair Help & Product Troubleshooting for 1992 Toyota Land Cruiser

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