Case Tractor FARMALL JX 80 DT

WARNING: Lift and handle all heavy parts using suitable lifting equipment. Make sure that assemblies or parts are supported by means of suitable slings and hooks. Check that no one is in the vicinity of the load to be lifted.

WARNING: Always use suitable tools to align holes in parts. NEVER USE FINGERS OR HANDS

Cylinder head placed on the test bench

Bore of the valve guide enlarged using twist drill 380000276

Valve guide removed using drift 380000219 (1)

New valve guide with the enlarged bore force fitted using drift 380000219 (1) and bush 380000242 (2)

Valve guide bore reamed out using reamer (1) 380000222

NOTE: When replacing exhaust valve guides you must also carry out the following further operations.

Measure the distance (L) between the cylinder head face and the base of the valve guide using a caliper gauge and the special plate of tool 380000277

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: 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: Disconnect the battery before starting the procedure

B+ and D+ alternator terminals disconnected

Reconnect the battery and turn the ignition key into position ON but without starting the engine

Battery reconnected and ignition key in ON position

If there is no voltage at the battery, check for a continuity fault in the external wiring. See circuit diagram in figure 2.

Continuity fault in the external wiring checked

D+ terminal, warning light wire (red) and earth (ground) connected. The warning light should illuminate.

Remove the end section of the draft control rod and mount it on the rod of tool 380000263. Fasten it using lock nut.

Place the tool 380000263 complete with its rod and the end section of the draft control rod on a surface plate.

Measure the distance between the upper surface of the rod and the micrometer gauge bearing surface on the tool.

With tool 380000264 mounted on the lift body and disconnected from the compressed air system, move the position control lever and the draft control lever fully back against the spacer.

Move the eccentric pin, connected to the internal draft control lever, to the horizontal position with the eccentric cam pointed towards the rear of the lift assembly.

Fit tool 380000263 to the lift body and fasten it to the two holes in the box as shown in figure.

Turn the screw on the internal draft control lever until the end of the plunger is flush with the inner reference surface of tool 380000264.

Turn the eccentric pin slightly to withdraw the end of the plunger of tool 380000264 as far as possible.

Again turn the screw to adjust the internal draft control lever until the end of the plunger is flush with the inner reference surface of the tool 380000264.