B1
HOLDING CLUTCH B1DISASSEMBLY
1. Remove the Teflon rings (1) (Fig. 165) from the B1 plate carrier hub (2).
2. Remove snap ring (7) (Fig. 166).
3. Remove multiple disc pack (6) and disc spring (5) from outer multiple disc carrier. Note which clutch disc is removed just prior to the disc spring (5) for re assembly. If the clutch discs are re used, this disc must be returned to its original position on top of the disc spring.
4. Place the Multi use Spring Compressor 8900 (8) (Fig. 166) on disc spring (3) and compress the spring until the snap ring (4) is exposed.
5. Remove snap ring (4).
6. Remove piston (2) from the outer multiple disc carrier by carefully blowing compressed air into the bore (A).
ASSEMBLY
NOTE: Check vulcanized gasket, replace if necessary.
1. Install piston (2) (Fig. 167) in outer multiple disc carrier (1).
2. Place compressor (8) on disc spring (3) and compress until the groove of the snap ring is exposed.
NOTE: The collar of the snap ring must point towards the multiple disc pack. After installing, check snap ring for correct seat.
3. Insert snap ring (4) (Fig. 167).
4. Insert disc spring (2) (Fig. 168) in the outer multiple disc carrier. Observe the disc spring (2) installation position. The lugs of the disc spring (2) washer must align with the 3 raised pads (arrow) of the B1 multiple disc carrier (1). The cone of the spring washer must point downwards.
5. Insert the multiple disc pack (6) in the outer multiple disc carrier and measure the clutch clearance.
NOTE: Pay attention to the sequence of discs. If the original clutch discs are reused, be sure to return the disc identified on disassembly as belonging on top of the disc spring (5) to its original location.
CAUTION: When working with double sided friction discs, an externally lugged steel plate is installed first, followed by a friction disc, and continuing on until all the required discs are installed. When working with single sided friction discs, an externally lugged disc is installed first, followed by an internally lugged disc, and continuing on until all the required discs are installed. All single sided discs are installed with the friction side up.
NOTE: Place new friction multiple discs in ATE fluid for one hour before installing.
6. Measure B1 clutch clearance by mounting Pressing Tool 8901 (1) (Fig. 169) on outer multiple disc.
7. Using a lever press (Fig. 169), compress pressing tool as far as the stop (then the marking ring is still visible see small arrow).
8. For transmissions using double sided friction discs, use a feeler gauge to determine the play "L" (Fig. 170) at three points between the snap ring (6) and outer multiple disc (4). During the measurement, the snap ring (6). must contact the upper bearing surface of the groove in the outer multiple disc carrier (5). The correct clearance for transmissions using double sided friction discs is 2.3 - 2.7 mm (0.091 - 0.106 inch) for two friction disc versions, 2.7 - 3.1 mm (0.106 - 0.122 inch) for three disc versions, and 3.0 - 3.4 mm (0.118 - 0.134 inch) for four disc versions.
9. Adjust with snap ring (6), 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).
10. For transmissions using single sided friction discs, use a feeler gauge to determine the play "L" (Fig. 171) at three points between the snap ring (5) and outer multiple disc (3). During the measurement, the snap ring (5) must contact the upper bearing surface of the groove in the outer multiple disc carrier (4). The correct clearance is 2.2 - 2.6 mm (0.087 - 0.102 inch) for four friction disc versions, 2.4 - 2.8 mm (0.095 - 0.110 inch) for six disc versions, and 2.6 - 3.0 mm (0.102 - 0.118 inch) for eight disc versions.
11. 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)
12. Install the Teflon rings (1) (Fig. 172) onto the B1 plate carrier hub (2).
13. Coat Teflon rings (1) lightly with grease and insert in the groove so that the joint remains together.