Case Tractor FARMALL JX 80 DT

Warning: The oil in the compressor of the recovery/recycling station should be replaced with new oil (code 293825) every 12 months to maintain the station’s refrigerant treatment capacity and to protect the compressor.

Open cock (13), and drain the oil into a container to be disposed of in accordance with local regulations for waste oil disposal.

Remove the caps from the service valves (14) on the side of the compressor and (13) on the sight glass.

Connect the service pipe of the evacuation station (294030) to valve (14) and connect a pick--up pipe from kit 294043to valve (13) on the sight glass.

Perform the evacuation operation with the pump in operation. The new oil can be aspirated from an external container by means of the pick--up pipe.

Once the compressor has been filled with correct quantity of oil (half--way up the sight glass) close valve (13), disconnect the pick--up pipe, and replace the cap on service valve (13). Continue the evacuation for approx. 30 minutes.

On conclusion, close the cocks, switch off the pump, disconnect the service pipe and replace the cap on service valve (14).

Record the operation on the appropriate service report card.

Warning: Every 12 months or earlier if the humidity indicator (15) turns yellow and stays yellow throughout the recovery/recirculation stage, renew the filter (3).

Close all the valves including the yellow service valve (9) installed below the distillation cylinder (4).

If refrigerant is present in the circuit set pushbutton (5) to position ”1” and carry out the refrigerant recovery operation. The compressor will stop automatically when the pressure gauge (2) drops to --0.3 bar (--4.35 psi).

Remove and replace the contaminated filter (3).

Carry out a normal evacuation operation for about 30 minutes using the evacuation/charging system (294030) proceeding as follows: connect the pipe (17, fig. 17) to the service valve (14, fig. 16), open the cock installed on the pipe itself and cocks (4, 10 and 9, fig. 17).

On completion of the evacuation operation, close cocks (4, 10 and 9), the cock on the pipe (17) and disconnect pipe (17).

Check filter connections for leaks (3)

To check for leaks at the connections of the previously replaced filter (3) open the yellow service cock (9) on the distillation cylinder (4).

Perform a brief recycling operation on the refrigerant contained in the cylinder (19), proceeding as described in the operations 18÷21, on page 23 and check with a leak detector for leaks at the connections of the new filter.

The oil filter (3) figs. 7 and 8 is of the full--flow, integral paper cartridge type, and is installed in the pump delivery line.

Should the filter become clogged, the safety valve (2) will open to allow the oil to by--pass the filter, thus ensuring that the engine continues to be lubricated, although with unfiltered oil.

Replace the cartridge periodically (every 400 operating hours), remembering to:

— oil the outer part of the seal in contact with the mounting on the crankcase;

— screw on the new cartridge until the seal is up against the mounting;

— tighten the cartridge, by hand only, through a further 3/4 turn.;

DANGER: When recovering refrigerant from the system adhere to the safety rules on page 2.

Disconnect the negative battery lead.

Recover the refrigerant from the system using the recovery/recycling station 294048 as described on page 22.

Drain off the coolant from the drain line (1) on the engine block.

Remove the fixing plugs on the roof mat (1) and take off the roof mat

Remove fastening bolts (1) which are located in back of roof and take off the top cover (2)

Remove the electric connectors (1).

Remove A/C inlet and outlet pipes (1)

Remove heater pipe connections (1) and take off the pipes.

Warning: This procedure requires trained personnel with PPE!

Operate the air conditioning system for a few minutes with the tractor engine running and the hood down

Check if the charging cylinder already contains refrigerant

Connect the station’s supply lead to a power outlet

Make sure that all cocks are closed except the service cock

Remove the caps from the service valves installed on the suction and discharge lines of the compressor

Connect the blue service pipe to the valve on the suction side of the compressor

Connect the red service pipe to the valve on the discharge side of the compressor