Texasgreen
Silver Member
- Joined
- Nov 26, 2005
- Messages
- 183
- Location
- Mont Belvieu, TX
- Tractor
- 06 Montana 4940C/R4/FEL arched boom.
I need to know how much oil charge goes into a Montana 4940C A/C system? I had to buy a new compressor and drier / receiver for my tractor. The A/C system was flushed and cleared of the old contaminated oil and freon and is now ready for the the new drier / receiver and the new compressor to be put on. Once I pull vacuum down to 30 inch's vac. and it holds, I'll need to add the oil back into the system and I'm not sure how much oil is needed this size system. To much oil and the system will not cool properly and to little oil will trash out the compressor. Please help! Is there a formula for this?