Case Backhoe Serial Number And Year Guide

[Vennie Fireman]

Iknow it has been hot, but last couple of days my A/C isn't cooling like it has been. First off let me say I am not an A/C expert when it comes to repairs. Here are the symptoms and what I have checked.

Compressor is kicking in. Lines connecting to compressor, one gets cool, one warms up when system is running. I bought one of the $17 idiot proof refrigerant gauges at the auto parts store for a 134 system. I connected it just as it said and followed the procedure to check the system. The gauge said it had the proper charge. Not too much, not too little.

My next step is to wash out the condensor in front of the radiator. I will also try to clean the evaporator. I know it is the top of the cab but I can't tell if you pull the top off the cab or go in through the headliner to access it. I have also checked and cleaned the cab air filters.

Doesn't seem to help running on recirculated cab air so I don't think it is the filters. The machine also has a warning light on the climate control panel. The book says this light comes on if the system pressure gets too low or too high. The light has never came on. Maybe the light doesn't work. I'll have to check that as well.

cleaning the condenser is a good step ,then clean the evaporator. is the air flow good? .a good cheap set of gages will tell you low and high side pressures .should be 25-35 on the low side and 200-275 on the high side . i have found through the years that the pressures vary alot on systems ,so use those pressures as a guideline .with the compressor running and the low side line cool and the high side warm ,i would bet on a dirty condenser .

I'll second what Tommy said. Clean everything up good. Get a set of real gauges and get the high and low side pressures. R-134 is finicky about charge level. Even fully charged there will usually still be bubbles in the sight glass, so you can't go by that. I've "fixed" R-134 systems just by evacuating them and putting back in the correct amount of refrigerant. There's really no way to tell what's in their without sucking it out and measuring it either.

I didn't catch which model 580 you have. Does it have a fan clutch? If it does, make sure that it's good. A bad fan drive won't get enough airflow through the condensor and can also lead to poor performance, but you should see high, high side pressures with this.

I would think that if you are sitting in one place digging with the backhoe, with all this heat that you would have a probelm getting enough air flow through the condenser resulting in poor cooling, too.

Thanks for the advice so far guys! I'm going to proceed with cleaning the condensor first and then the evaporator. This thing would freeze you on low setting up until last week. That is what made me think I had developed a leak and lost refrigerant but the gauge says no.

Back when we were retrofitting lots, and I mean lots of R12 systems to 134, every one got a new heavyduty fan clutch if it was a belt drive fan. If it was electric it got at least one extra fan. When they first changed over the add on units from R-12 to 134 they didn't work worth a durn. The units used in the Case backhoes(at least up untill the Super K's) are essentially a nice add on unit. Condensor sizes on these are kind of limiting anyway, so any change makes a big difference. You may or may not see any difference in engine temp, probably not. Some of the A/C stuff is getting a little fuzzy now, but a little "jogging" generally brings it back Good practice.

i think that is why my 5088 doesent work as well as the 886 ,the 8 has a wider condenser with more surface area ,the 5088 has a stacked condenser in a low air flow area . if it quits again ,im going to try to get a bigger parallel flow condenser ,along with a 1.5? ton expansion valve.

Most personal injury lawsuits settle before trial. The reason for this is simple. Trials are risky. It is impossible to predict, with any accuracy, how juries are going to decide a particular case and how much money they will award.

Settlements are often the best means for the injured party to receive fair compensation, while the defense lawyer and insurance adjustor avoid the risk of a huge jury verdict that might cause them to lose their jobs.

In 1995, Reggie Qualls was 27 years old and had just begun working as a laborer for a construction company. On his third day on the job, Mr. Qualls was assigned to operate a loader/backhoe (manufactured by defendant Case Corporation). He had never operated this type of machine before.

His employer told Mr. Qualls to use the loader end of the machine to pick up trash. While doing so, he placed his jacket behind his seat. Later, while standing outside of the machine, near the boom of the backhoe, Mr. Qualls placed a cooler on top of his jacket.

As a result of thousands of hours of work, we learned that many similar backhoe accidents had occurred around the country and that there were many different ways in which the danger could have been eliminated by Case.

If the jury decided that Case was responsible, then the trial would proceed to the second phase, the damages phase, in which the jury would have to decide how much money to award Mr. Qualls to compensate him for his injuries.

During the damages part of the trial, the defendant had to admit that Mr. Qualls was seriously injured, but they tried every way that they could think of to minimize the amount of money that they would have to pay to compensate him.

The defendant also argued that, rather than receive care at home, Mr. Qualls should leave behind his family in Southern California and enter a rehabilitation institution in Colorado, again at much less cost to the defendant.

The money that Mr. Qualls received (in 1998) has allowed him to purchase a home and receive the medical care that he needs and has helped him obtain some enjoyment from life despite his horrible disabilities.

The plaintiff and the other laborer were operating the machine strictly as a loader, putting trash by hand into the loader bucket and then dumping the trash into a large bin. The plaintiff had no experience in the operation of the loader/backhoe, but he drove the loader during this operation.

Since the seat was facing toward the loader, the pedals which operate the boom were located behind the seat The plaintiff and the other laborer had thrown their jackets behind the seat. The plaintiff had a two-gallon personal cooler containing lemonade which was placed on top of one of the jackets, which in turn was on top of one of the pedals. This depressed the pedal, causing the boom to move quickly in the direction of the plaintiff, smashing him against the stabilizer.

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