Evacuate the A/C system. (See Reclamation And Charging With Recovery / Charging Unit on Page 70-40-3.)
Remove the A/C hoses (Item 1 and 2) [Figure 70-100-1] from the expansion valve.
Remove the evaporator fittings (Item 3) [Figure 70-100-1] from the expansion valve.
Installation: Tighten the hose (Item 1) to 28 – 36 N•m (21 – 27 ft-lb) torque. Tighten the hose (Item 2) to 15 – 17 N•m (11 – 13 ft-lb) torque. Tighten the fittings (Item 3) [Figure 70-100-1] to 15 – 17 N•m (11 – 13 ft-lb) torque.
Remove the bolts (Item 4) [Figure 70-100-1].
Remove the expansion valve from the excavator.
Cap and plug the evaporator tubelines and the expansion valve fittings with the proper A/C caps and plugs.
The expansion valve is not serviceable and must be replaced as an assembly.
