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Home >> Lincoln >> 2019 >> Nautilus Base, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 (1 Of 2)) >> Description And Operation >> Main Control Valve Body

Main Control Valve Body

WARNING: This page is about a different variant/trim than selected.
GFD428239Courtesy of FORD MOTOR COMPANY
GFD428240Courtesy of FORD MOTOR COMPANY
GFD428241Courtesy of FORD MOTOR COMPANY
GFD428242Courtesy of FORD MOTOR COMPANY
Item  Description 
1 Transmission internal wiring harness frame bolt
2 Transmission internal wiring harness frame
3 Solenoid body-to-main control bolt (7 required)
4 Solenoid body
5 Seperator plate-to-main control bolt (2 required)
6 Solenoid body-to-main control seperator plate
7 Main control
8 Seperator plate-to-main control bolt
9 Main control-to-transmission case seperator plate
10 Dowel pins (2 required)
11 Solenoid damper
12 Solenoid damper and spring (2 required)
13 Valve retaining plug
14 Check ball (2 required)
15 Pressure regulator valve
16 Check valve
17 Converter regulator valve
18 Bypass control/converter regulator valve assembly
19 Park valve
20 Lubrication control valve
21 Oil cooler/lubrication control valve assembly
22 F (2, 8) clutch shift solenoid/control valve
23 E (5, 6, 7, 8) clutch shift solenoid/control valve
24 A (1, 2, 3, 4, 5) clutch shift solenoid/control valve
25 C (3, 7) clutch shift solenoid/control valve
26 B (4, 6, R) clutch shift solenoid/control valve
27 LPC solenoid
28 TCC solenoid
29 Park lock pawl solenoid
30 LPC sensor
31 TFT sensor
32 B (4, 6, R) clutch latch valve

Main Control Components 

GFD428243Courtesy of FORD MOTOR COMPANY
Item  Description 
1 Transmission case
2 Main control-to-transmission case seperator plate
3 Main control
4 Solenoid body-to-main control seperator plate
5 Solenoid body assembly
6 Main control cover

The main control assembly consists of a valve body and a solenoid body. Both the valve body and the solenoid body contain hydraulic shift valves. The solenoid body contains the shift solenoids that control the hydraulic valves. The solenoid body can be serviced with the main control or the solenoids can be serviced individually. The solenoid body is controlled by the PCM. The PCM has software stored in it specific to the solenoid body currently in the transmission, called the solenoid body strategy. A new solenoid body strategy must be downloaded into the PCM anytime a new solenoid body is installed.