Case Tractor FARMALL JX 75 DT

WARNING: Handle all parts carefully. Do not put your hands or fingers between parts. Wear suitable safety clothing, safety goggles, gloves and footwear.

Clean all parts carefully before proceeding with the operations described below.

NOTE: Cylinder liner dimensions must only be measured when the liner is installed in the cylinder bore as they are subject to deformation when not fitted.

NOTE: If one of the liners requires reboring, all the liners in the engine must be rebored to the same oversize.

Measure the inside diameter in the area swept by the piston rings X (fig. 139)

Measure the inside diameter at the upper and lower ends of this area both parallel to the crankshaft centre line (a) and at right angles to the crankshaft centre line (b)

Compare measurements to determine liner ovality and taper.

To check piston running clearance, measure the inside diameter of each liner in the area Z (fig. 139) along the axis at right angles to the crankshaft centre line.

This procedure requires the universal outfit 293650.

Parts of the universal outfit 293650 necessary to adjust the VALEO clutch.

List of parts used from the universal outfit 293650

Before fitting the clutch on the outfit 293650, remove the three bolts retaining the flexible tabs.

To fit the clutch on the universal outfit 293650, follow these steps:

Steps to fit the clutch on the universal outfit 293650

To check the coplanarity, follow these steps:

To remove the clutch, follow these steps:

Cab ventilation fan set to maximum speed

Pressure on suction side of compressor (low pressure gauge)

Pressure on discharge side of compressor (high pressure gauge)

Temperature of air leaving vents inside the cab

Pressure readings within the value ranges indicated on page 3

ATTENTION: Always use appropriate tools to align fixing holes. NEVER USE FINGERS OR HANDS.

Check that the PTO clutch is disengaged.

Unscrew the PTO engaged switch (2) retaining screws(1) and move the switch away from the control valve lever (3).

Move the switch (2) towards control valve lever (3) until the switch clicks into position.

Lock the switch (2) in this position with the retaining screws (1).

Measure the clutch free travel (C, fig. 20)

Is the clutch free travel 4.5 mm?

If the clutch free travel is down to 2.5 mm, adjust the clutch as follows:

Move the PTO clutch lever (1) fig. 19 to engaged position (A) (fully raised)

Loosen the locknut (1) fig. 20 and remove the split pin (2)

Turn the sleeve (3) to completely tighten the cable

Slacken the sleeve (3) for 4 turns (approximately 4.5 mm) to lengthen the cable length

Lock the split pin (2), so as to restore the travel with no load to 4.5 mm (0.1772 in.) then tighten the locknut (1)

Sign off on the PTO Clutch Linkage (Valeo Clutch) Adjustment