Ford Explorer: Automatic Transmission - 10-Speed Automatic Transmission – 10R60 / Description and Operation - B Clutch

Ford Explorer 2020-2022 Service Manual / Powertrain / Automatic Transmission / Automatic Transmission - 10-Speed Automatic Transmission – 10R60 / Description and Operation - B Clutch

Overview

Item Description
1   SSB
2 B clutch control valve
3 B clutch latch valve
4 B clutch apply circuit
5 B clutch piston
6 B clutch assembly
7 One-Way Clutch (OWC)
8 Sun gear No. 1
9 Sun gear No. 2

Sun gear No. 1 is mechanically connected to sun gear No. 2. Sun gear No. 1 is also connected to the B clutch. When the B clutch applies, it holds the sun gear No. 1 and sun gear No. 2 stationary. The One Way Clutch (OWC) also holds the sun gear No. 1 and sun gear No. 2 stationary during acceleration in first and second gear when the shifter is in the D position.

B Clutch Exploded View

Item Description
1 Front support assembly
2 B clutch piston
3 B clutch apply plate
4 B clutch friction plates
5 B clutch separating springs
6 B clutch steel plates
7 B clutch pressure plate
8 One-Way Clutch (OWC)
9 Sun gear No. 1
10 Sun gear No. 2

B Clutch Hydraulic Circuits

Item Description
1 Line pressure
2 Pump output
3 B clutch control valve
4   SSB
5 Control pressure to latch valve
6 B clutch latch valve
7 Apply pressure to mechanical B clutch
8 Mechanical B clutch
9 Elevated exhaust pressure
10 Clutch exhaust

B Clutch Hydraulic Operation

Line pressure is supplied to the B clutch control valve and the B clutch latch valve. As SSB turns on, it moves the control valve allowing regulated line pressure to flow to the B clutch latch valve and then to the mechanical B clutch. When the regulated line pressure in the B clutch control circuit reaches approximately 689 kPa (100 psi), the mechanical B clutch is fully applied. The pressure in the B clutch control circuit moves the B clutch latch valve to the left which allows line pressure to hold the mechanical B clutch applied.

B Clutch Hydraulic Passages



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