Clutch B - Disassembly And Adjustments
CLUTCH B MEASUREMENT PROCEDURE
When the Clutch B is replaced, the proper selectable shim must be installed to achieve specified clearance.
- Place the Clutch B, with the wave plate on top, on a suitable arbor press.
- Position tools (special tool #8901A, Pressing Tool) (using just the cross bar) and (special tool #10429, Gauge, Force) on top of the Clutch B wave plate and under the press ram.
1 - Clutch B Wave Plate 2 - Force Gauge 3 - Compressed Clutch B - Apply 500 N (112 lbf.) of downward force on the Clutch B to compress the wave plate.
- Using a suitable micrometer, measure the thickness of the compressed Clutch B. Record the measurement as (A)
to calculate the Clutch B clearance in order to determine the correct selectable shim thickness.
1 - Clutch B Retainer 2 - Transmission Oil Pump - With a suitable depth micrometer, place it at the mounting surface of the transmission oil pump and measure to the base of the Clutch B retainer on the case. This measurement should be 61.05 mm. Record the measurement as (B)
to calculate the Clutch B clearance in order to determine the correct selectable shim thickness.
- Using a suitable depth micrometer, measure the Clutch B piston.
- Measure between the fluid pump sealing surface and the bottom of the straight edge. Record the measurement as (C) to calculate the Clutch B clearance in order to determine the correct selectable shim thickness.
Calculation - Take the case depth (B) subtract (C) subtract (A) remainder is the clearance of the Clutch B. If the clearance is not within specification a thinner or thicker reaction plate can be installed to achieve proper clearance.
| 1 - Clutch B Wave Plate |
| 2 - Force Gauge |
| 3 - Pressing Tool |
CLUTCH SPECIFICATIONS
| Clutch | Condition | Minimum | Normal | Maximum |
|---|---|---|---|---|
| B | NEW | 1.52 mm | 1.725 mm | 1.93 mm |
| 0.060 in. | 0.068 in. | 0.076 in. | ||
| AFTER OPERATION | 1.52 mm | 1.825 mm | 2.13 mm | |
| 0.060 in. | 0.072 in. | 0.084 in. |
CLUTCH B SELECTABLE BACKING PLATES
| 6.0 mm | .236 in. |
| 5.8 mm | .228 in. |
| 5.6 mm | .220 in. |
| 5.4 mm | .212 in. |
| 5.2 mm | .204 in. |
| 5.0 mm | .196 in. |
| 4.8 mm | .188 in. |
DISASSEMBLY The Clutch B, depending on the transmission Julian date, may contain wave springs that sit around each friction plate. There will be five friction plates (2), five wave springs (3), five steels plates (4), one backing plate (1), and one wave plate (5).
| 1 - Backing Plate |
| 2 - Friction Plates |
| 3 - Wave Springs |
| 4 - Steel Plates |
| 5 - Wave Plate |
- Position the input/output shaft and the P4 annulus drum assembly on (special tool #8925-3, Assembly, Press Fixture) with (special tool #1130, Splitter, Bearing/Gear) and remove the Clutch B discs and plates.
| 1 - P4 Annulus Drum Assembly |
| 2 - Clutch B Discs and Plates |
| 3 - Press Fixture Assembly |
| 4 - Bearing/Gear Splitter |
ASSEMBLY
| 1 - P4 Annulus Drum Assembly |
| 2 - Clutch B Discs and Plates |
| 3 - Press Fixture Assembly |
| 4 - Splitter, Bearing/Gear |
If clutch discs are being replaced, soak in 8HP transmission fluid before assembly.
- Position the input/output and the P4 annulus drum assembly on (special tool #8925-3, Assembly, Press Fixture) and (special tool #1130, Splitter, Bearing/Gear).
1 - P4 Annulus Drum Assembly 2 - Clutch B Discs and Plates 3 - Press Fixture Assembly 4 - Bearing/Gear Splitter - Install the backing plate first, bevel down.
- Install the Clutch B plates. If equipped with wave springs, install the first friction plate on the backing plate, then install a wave spring (it will lay just outside the diameter of the friction plate), then a steel plate, and repeat until all plates are installed.
- Install the Clutch B wave plate.
- Install the P1 annulus onto the input/output shaft.
- Install the correct selectable shim onto the P1 annulus.