K1
NAG1 AUTOMATIC TRANSMISSIONDRIVING CLUTCH K1
DISASSEMBLY
1. Remove snap-ring (11) (Fig. 75) from outer multiple-disc carrier (6).
2. Take multiple-disc pack (12) out of outer multiple-disc carrier (6).
3. Place Multi-use Spring Compressor 8900 on the spring plate (8) and compress the spring until the snap-ring (10) is exposed.
4. Remove snap-ring (10) (Fig. 75).
5. Take out disc spring (7) and remove piston (6) by carefully blowing compressed air into the bore (A).
6. Remove snap-ring (3) and take out front freewheeling clutch F1 (2).
ASSEMBLY
1. Install piston (6) (Fig. 76) in the outer multiple-disc carrier (1). Check sealing rings (4 and 5), replace if necessary. The rounded off edges of the sealing rings must point outwards.
2. Insert disc spring (7) (Fig. 76). Insert disc spring with the curvature towards the piston.
3. Insert spring plate (8). Insert spring plate with the curvature towards the sun gear. Check sealing ring (9), replace if necessary.
4. Place Multi-use Spring Compressor 8900 on spring plate (8) and compress the spring until the groove of the snap-ring is exposed.
5. Insert snap-ring (10) (Fig. 76). After installing, check snap-ring for correct seat.
NOTE: Pay attention to sequence of discs. Place new friction multiple-discs in ATF fluid for one hour before installing.
6. Insert multiple-disc pack (12) in the outer multiple-disc carrier.
7. Insert snap-ring (11).
8. Measure the K1 clutch pack clearance.
a. Mount Pressing Tool 8901 (1) (Fig. 77) on outer multiple disc.
b. Using a lever press, compress pressing tool as far as the stop (then the marking ring is still visible).
c. Using a feeler gauge, determine the play "L" (Fig. 78) at three points between the snap-ring (5) and outer multiple-disc (3).
d. During the measurement the snap-ring (5) must contact the upper bearing surface of the groove in the outer multiple-disc carrier.
e. The correct clutch clearance is 2.7 - 3.1 mm (0.106 - 0.122 inch) for three friction disc versions, 3.0 - 3.4 mm (0.118 - 0.134 inch) for four disc versions, 3.3 - 3.7 mm (0.130 - 0.146 inch) for five disc versions, and 3.6 - 4.0 mm (0.142 - 0.158 inch) for six disc versions. (0 Adjust with snap-ring (5), if necessary. Snap rings are available in thicknesses of 2.6 mm (0.102 inch), 2.9 mm (0.114 inch), 3.2 mm (0.126 inch), 3.5 mm (0.138 inch), 3.8 mm (0.150 inch), and 4.1 mm (0.162 inch).
9. Insert front freewheeling clutch F1 (2) and fit snap-ring (3). The freewheeling clutch F1 (2) must be installed in the direction of the arrow.