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| Illustration 1 | g00906874 |
Single Disc
Note: The following information is for the 138-1614 Brake and Planetary on machines with the following serial numbers: (RTA1-UPWGX1-UPDFZ1-UPRBB1-UPWMB1-UPDDA1-UP).
(1) Thickness of new 170-4697 Plate ... 37.4 mm (1.5 inch)
(2) Thickness of new 170-1208 Friction Disc ... 7.8 ± .08 mm (0.3 ± 0.003 inch)
Note: The following chart shows the wear rate for the 170-1208 Friction Disc.
| Friction Disc Wear Chart | |
| Percent of Remaining Life | Disc Thickness |
| 100 | 7.8 mm (0.310 inch) |
| 80 | 7.51 mm (0.296 inch) |
| 60 | 7.22 mm (0.284 inch) |
| 40 | 6.93 mm (0.273 inch) |
| 20 | 6.64 mm (0.261 inch) |
| 0 | 6.35 mm (0.250 inch) |
Minimum thickness of worn disk ... 6.35 mm (0.250 inch)
Minimum depth of the oil grooves ... 0.32 mm (0.0126 inch)
Note: When you replace friction disc (2), replace the two O-ring seals (4) and (5) and replace the three springs (6) .
(3) Thickness of new 143-4916 Piston ... 43.5 mm (1.7 inch)
(4) 165-6692 Seal
(5) 159-3589 Seal Assembly
(6) 148-7841 Spring
Free length ... 49.21 mm (1.937 inch)
Outside diameter ... 21.034 mm (0.828 inch)
(7) Inside diameter of 8R-7812 Planet Gear ... 43.218 ± .01 mm (1.702 ± 0.0004 inch)
(8) Diameter of 8R-0248 Planet Shaft ... 35.253 ± .008 mm (1.388 ± 0.0003 inch)
(9) Inside diameter of 9C-6020 Sleeve Bearing ... 35.301 ± .039 mm (1.390 ± 0.0015 inch)
Outside diameter of 9C-6020 Sleeve Bearing ... 43.117 ± .013 mm (1.698 ± 0.0005 inch)
Note: The following information is for the 163-5775 Brake and Planetary on machines with the following serial numbers: (DJD1-UPWLG1-UPDBT1-UPWAC1-UPEWF1-UP).
(1) Thickness of new 170-4698 Reaction Plate ... 24.99 mm (0.984 inch)
(2) Thickness of new 170-0048 Friction Disc ... 9.10 ± .08 mm (0.358 ± 0.003 inch)
Note: The following chart shows the wear rate for the 170-0048 Friction Disc.
| Friction Disc Wear Chart | |
| Percent of Remaining Life | Disc Thickness |
| 100 | 9.10 mm (0.358 inch) |
| 80 | 8.81 mm (0.347 inch) |
| 60 | 8.52 mm (0.335 inch) |
| 40 | 8.22 mm (0.324 inch) |
| 20 | 7.93 mm (0.312 inch) |
| 0 | 7.65 mm (0.301 inch) |
Minimum thickness of worn disk ... 7.65 mm (0.300 inch)
Minimum depth of the oil grooves ... 0.32 mm (0.0126 inch)
Note: When you replace friction disc (2), replace the two seals (4) and (5) and replace the three springs (6) .
(3) Thickness of new 163-5776 Piston ... 41.5 mm (1.63 inch)
(4) 163-7234 D-Ring Seal
(5) 163-7233 D-Ring Seal
(6) 170-0108 Spring
Free length ... 39.46 mm (1.554 inch)
Outside diameter ... 21.5 mm (0.847 inch)
(7) Inside diameter of 116-7712 Planet Gear ... 51.872 ± .01 mm (2.042 ± 0.0004 inch)
(8) Diameter of 8R-2200 Planet Shaft ... 42.316 ± .008 mm (1.666 ± 0.0003 inch)
(9) Inside diameter of 8R-2201 Sleeve Bearing ... 42.375 ± 0.039 mm (1.668 ± 0.0015 inch)
Outside diameter of 8R-2201 Sleeve Bearing ... 51.793 ± .013 mm (2.039 ± 0.0005 inch)
Dual Disc
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| Illustration 2 | g00904718 |
Note: The following information is for the 197-8894 Brake and Planetary on machines with the following serial numbers: (RTA1-UPWGX1-UPDFZ1-UPRBB1-UPWMB1-UPDDA1-UP).
(1) Thickness of new 197-8896 Plate ... 25.2 mm (1 inch)
(2) Thickness of new 198-0246 Friction Disc ... 5.8 ± .8 mm (0.23 ± 0.03 inch)
Note: The following chart shows the wear rate for the 198-0246 Friction Disc.
| Friction Disc Wear Chart | |
| Percent of Remaining Life | Disc Thickness |
| 100 | 5.80 mm (0.228 inch) |
| 80 | 5.51 mm (0.217 inch) |
| 60 | 5.22 mm (0.206 inch) |
| 40 | 4.92 mm (0.194 inch) |
| 20 | 4.64 mm (0.183 inch) |
| 0 | 4.35 mm (0.171 inch) |
Minimum thickness of worn disk ... 6.35 mm (0.250 inch)
Minimum depth of the oil grooves ... 0.32 mm (0.0126 inch)
Note: When you replace friction disc (2), replace the two O-ring seals (4) and (5) and replace the three springs (6) .
(3) Thickness of new 143-4916 Piston ... 43.5 mm (1.7 inch)
(4) 165-6692 Seal
(5) 159-3589 Seal Assembly
(6) 148-7841 Spring
Free length ... 49.21 mm (1.937 inch)
Outside diameter ... 21.034 mm (0.828 inch)
(7) Inside diameter of 8R-7812 Planet Gear ... 43.218 ± .01 mm (1.702 ± 0.0004 inch)
(8) Diameter of 8R-0248 Planet Shaft ... 35.253 ± .008 mm (1.388 ± 0.0003 inch)
(9) Inside diameter of 9C-6020 Sleeve Bearing ... 35.301 ± .039 mm (1.390 ± 0.0015 inch)
Outside diameter of 9C-6020 Sleeve Bearing ... 43.117 ± .013 mm (1.698 ± 0.0005 inch)
Note: The following information is for the 203-2768 Brake and Planetary on machines with the following serial numbers: (DJD1-UPWLG1-UPDBT1-UPWAC1-UPEWF1-UP).
(1) Thickness of new 170-4698 Reaction Plate ... 24.99 mm (0.984 inch)
(2) Thickness of new 170-0048 Friction Disc ... 9.10 ± .08 mm (0.358 ± 0.003 inch)
Note: The following chart shows the wear rate for the 170-0048 Friction Disc.
| Friction Disc Wear Chart | |
| Percent of Remaining Life | Disc Thickness |
| 100 | 9.10 mm (0.358 inch) |
| 80 | 8.81 mm (0.347 inch) |
| 60 | 8.52 mm (0.335 inch) |
| 40 | 8.22 mm (0.324 inch) |
| 20 | 7.93 mm (0.312 inch) |
| 0 | 7.65 mm (0.301 inch) |
Minimum thickness of worn disk ... 7.65 mm (0.300 inch)
Minimum depth of the oil grooves ... 0.32 mm (0.0126 inch)
Note: When you replace friction disc (2), replace the two seals (4) and (5) and replace the three springs (6) .
(3) Thickness of new 163-5776 Piston ... 41.5 mm (1.63 inch)
(4) 163-7234 D-Ring Seal
(5) 163-7233 D-Ring Seal
(6) 170-0108 Spring
Free length ... 39.46 mm (1.554 inch)
Outside diameter ... 21.5 mm (0.847 inch)
(7) Inside diameter of 116-7712 Planet Gear ... 51.872 ± .01 mm (2.042 ± 0.0004 inch)
(8) Diameter of 8R-2200 Planet Shaft ... 42.316 ± .008 mm (1.666 ± 0.0003 inch)
(9) Inside diameter of 8R-2201 Sleeve Bearing ... 42.375 ± 0.039 mm (1.668 ± 0.0015 inch)
Outside diameter of 8R-2201 Sleeve Bearing ... 51.793 ± .013 mm (2.039 ± 0.0005 inch)