Dash ac recharge on class a diesel pusher
Just turned dash ac on this past weekend. It blows cool but not cold like it used to. Is it easy to charge yourself? This is a 2006 coachman cross country. Let me know your thoughts. Thanks
Forum Discussion
dougrainer wrote:Ivylog wrote:crasster wrote:
Really - while you can DIY recharge, it is BEST if you can put the system under a deep vacuum then charge. It's the proper way to get all the air out so there is more pure 134a.
Really, How is air going to get into a system that is still cooling, but not as cold as normal... is still pressurized and has enough freon in the system to work somewhat? Even while working the low pressure side will have 60+ psi in it... how is air going to get in???
Bingo. HOW can air get into a pressurized system? IF the system has been open to the atmosphere, then yes, find the leak, then Vacuum and charge. Vacuum can also let you know if the system has a large leak. Small leaks that happen under pressure, a Vacuum test rarely is accurate. Now, HOW is a novice supposed to know how much 134a to install? Unless you have your gauges connected and do a digital temp at closest outlet to the evaporator, you will have a hard time getting it filled correctly. BTW, SMALL leaks will not cause Oil loss. TOO MUCH 134a is as bad as too little. Too much and the system will not cool correctly just like too little. A TEST for posters. HOW much 134a(lbs) do you think a average Diesel RV motorhome takes? Doug
A diesel pusher about 3-4 lbs
