What should AC pressures be at?
These pressures will vary depending on ambient temperature (temperature of the outside atmosphere), but ideally, you will want to see your low side pressure between 30-40 psi and your high side pressure between 150-175 psi.
What should the high and low side pressure be in a R134a system?
R134a Pressure Gauge Chart
| Ambient Temperature (°F) | Low Side | High Side |
|---|---|---|
| 90° | 50-55 psi | 250-275 psi |
| 85° | 50-55 psi | 220-250 psi |
| 80° | 45-50 psi | 175-220 psi |
| 75° | 40-45 psi | 150-175 psi |
What does high pressure on low side mean?
If the pressure is too high than what the chart indicates is normal then that means you have an overcharged system and if it’s lower it means that you might have a refrigerant leak somewhere in the line If you have zero pressure then it means you have no coolant at all and it’s likely leaking entirely from someplace.
What should my pressures be on 134a?
22 pounds per square inch
For normal running pressures in the R134a system, at the lowest temperature, the coil should run at 22 pounds per square inch that is 45-20, 25 degrees Fahrenheit. While at the highest temperature it should be 57 pounds per square inches that is 60-20,40 degrees Fahrenheit.
What should suction pressure be on R134A?
The coil should run at 57 psi at the highest temperature. The normal running pressure of R134A is between 22 and 57 psi.
How to troubleshoot a / C problems in Freightliner Trucks?
A specially trained mechanic should fix any problems with the AC system, but you can troubleshoot to verify that there is a problem. Turn the engine on and allow the truck to warm up to its normal operating temperature. The water temperature gauge needle should sit in the center of the upper and lower marks on the gauge.
What does a Freightliner air conditioner compressor sound like?
Freightliners use a simple dial on the HVAC control unit to control the setting of the AC system. On a freightliner, the sound of the compressor starting is unmistakable. You should hear a low “hum” followed immediately by the cooling fan turning on.
What kind of compressor does a Freightliner M2 106 have?
FREIGHTLINER BUSINESS CLASS – M2 106 HEAVY TRUCK Model Specifications Compressor Type R134 Refrigeration (lbs) Compressor Oil (oz) Compressor Oil Viscosity Sanden 2.88 lbs A/C Hose A/C Hose – High Pressure Side A/C Hose – Low Pressure Side
What kind of cab assembly does Freightliner use?
Cooling Assembly. (Rad., Cond., ATAAC) NEW – Oem blem painted cab shell with doors, No back wall set for motorhome application. NEW – Oem blem crew cab shell, With RH side door shells. NEW – Oem blem crew cab shell, With some dents on the back wall and the upper edge of the back window open…