The compressor oil should be checked as follows when oil is being added to an in service excavator. There is a close affinity between oil…

The compressor (Item 1) [Figure 70-50-11] is factory filled with 150-170 cc’s of PAG 100 refrigerant oil (Polyalkelene Glycol). It is not necessary to frequently…

Remove the counterweight. (See Removal And Installation on Page 40-90-1.) Remove the alternator belt. (See Belt Replacement on Page 50-30-1.) Evacuate the A/C system. (See…

Use an approved recover / charging unit [Figure 70-40-5] to evacuate the system. Connect the reclaimer to the excavator A/C charge ports. IMPORTANT: Only A/C…

Pull up on and reposition the washer reservoir (Item 1) [Figure 70-40-1]. Locate the low pressure port (Item 1) and high pressure port (Item 2)…

Push the A/C switch (Item 1) to the OFF position. Turn the fan switch (Item 2) to the High Speed position. Turn the temperature control…

If the excavator A/C system shows no blower motor function, no A/C switch light and no A/C compressor function, do the following check: Remove the…

Whenever the A/C system is opened to the atmosphere or there has been a leak in the system, the receiver / dryer (Item 1) [Figure…

Start the excavator. Engage the A/C system with the blower fan on high. Run the excavator at full RPM for approximately 15 minutes, with the…

Evaporator Pressures represent gas temperatures inside the coil, not the coil surface. For an estimate of the temperature of the air coming off the coil…