2005 Focus Workshop Manual Page 1 of 8

SECTION 307-01: Automatic Transaxle/Transmission 2005 Focus Workshop Manual

DESCRIPTION AND OPERATION Procedure revision date: 05/19/2006

Transaxle Description Printable View (2533 KB)

The automatic transmission used in the vehicle is a new development.

It is a fully automatic, electronically controlled four-speed transmission designed for front-wheel drive vehicles.

Its abbreviated designation 4F27E means:

4 — four-speed transmission

F — front-wheel drive

27 — originally designed for maximum input torque after torque converter: 365 Nm (270 lb-ft)

E — fully electronic control

The individual ratios are achieved through two planetary gear sets, connected one behind the other.

The individual components of the planetary gear sets are driven or held by means of three multiplate clutches, a multiplate brake, a brake band and a roller one-way clutch.

The torque is transmitted to the final drive assembly through an intermediate gear stage.

MERCON® V is the fluid specified for the 4F27E transmission. The fluid is changed as directed by the Scheduled Maintenance Guide that is supplied with the vehicle.

The manual selector lever gives the driver a choice of P, R, N, 1, 2 and D.

In drive range "D" it is also possible to operate an O/D switch on the manual selector lever to prevent the transmission from shifting into fourth gear. The default gear for this transmission is
third gear.

To minimize fuel consumption, the torque converter lock-up clutch is closed by the PCM in 3rd and 4th gears depending on the throttle position and vehicle speed.

The transmission has electronic synchronous shift control (ESSC), which guarantees extremely smooth gear shifting over the entire life of the transmission.

A hydraulic emergency operating program maintains limited operation in the event of failure of important electrical components.

The transmission can be tested using FDS2000, NGS or WDS through the data link connector (DLC) in the passenger compartment.

Gear Ratio (Typical shown, ratios are model dependent)

1st 2.816:1
2nd 1.498:1
3rd 1.000:1
4th 0.726:1
Reverse 2.649:1

Identification tags

When servicing the automatic transaxle, refer to the identification tag located on the case.

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Item Part Number Description

1 — Transmission assembly part number
2 — Sample build date code (DDMMYY)
3 — Sample Julian build date and build number (YDDDXXX)
4 — Service model code

Range selection

The transaxle range selector has six positions: P, R, N, D, 2, 1.

Manual selector lever position "P"

In manual selector lever position "P" no gear is selected. The parking pawl is engaged manually by the manual selector lever cable and the shift shaft.

For safety reasons, always apply the parking brake whenever the vehicle is parked.

Manual selector lever position "R"

In manual selector lever position "R" reverse gear is selected. REVERSE allows the vehicle to be operated in a rearward direction, at a reduced gear ratio.

Manual selector lever position "N"

In manual selector lever position "N" no gear is selected. The driveline is not locked, so the wheels are free to rotate.

The vehicle may be started in NEUTRAL.

Manual selector lever position "D"

In manual selector lever position "D" and when the O/D switch is not pressed, the transmission control allows all the gears to be selected. When the O/D switch is pressed, shifting into
fourth gear is prevented or the transmission shifts down to third gear.

Manual selector lever position "1"

In manual selector lever position "1" only first gear is selected. In addition to the first gear one-way clutch, the transmission control closes the reverse gear brake to produce engine braking
effect in overrun.

If the manual selector lever is moved to position "1" at an excessive vehicle speed for first gear, the transmission control only allows the downshift to take place when the corresponding
vehicle speed has been reached.

Manual selector lever position "2"

In manual selector lever position "2" only second gear is selected. The transmission control does not allow shifting into first gear.

If the manual selector lever is moved to position "2" at an excessive vehicle speed for second gear, the transmission control only allows the downshift to take place when the corresponding
vehicle speed has been reached.

Converter Housing with Converter Assembly and Fluid Pump Assembly

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Item Part Number Description

1 7902 Converter assembly
2 1177 Seal assembly — differential
3 — Output shaft speed sensor bolt
4 7H103 Output shaft speed (OSS) sensor
5 W706315-S300 O-ring—OSS sensor
6 — Bolt—converter housing
7 — Retainer—fluid tube
8 7005 Converter housing
9 7A248 Seal — fluid pump
10 7A248 Seal assembly — fluid pump
11 — Bolt—fluid pump
12 7A103 Fluid pump assembly
13 7D019 Seal — forward clutch cylinder
14 7H042 Washer — fluid pump support thrust

Forward Clutch

Item Part Number Description

1 7F207 Shaft assembly — turbine
2 7A262 Piston assembly — forward clutch
3 7F235 Spring assembly — forward piston return
4 7H360 Piston — forward clutch balance
5 7H365 Snap ring — forward clutch balance piston
6 7B442 Steel plate — forward clutch separator (4)
7 7B164 Friction plate assembly — forward clutch (forward 4)
8 7B066 Plate — forward/direct clutch pressure (1 each)
9 7D483 Retaining ring (selective)
10 7B067 Hub — forward clutch cylinder

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Differential Assembly and Final Drive Input

Item Part Number Description

1 4067 Shim — differential bearing
2 4222 Cup — differential bearing
3 4221 Cone and roller assembly
4 4221 Bearing assembly
5 7H150 Wheel — output shaft speed sensor
6 7F465 Differential and gear assembly — transaxle
7 4230 Pinion thrust washer (2)
8 4215 Differential pinion gear (2)
9 4236 Differential side gear (2)
10 4228 Side gear thrust washer (2)
11 4241 Pin
12 4211 Differential pinion shaft
13 7H367 Shim — transfer shaft roller bearing
14 7H344 Cup-transfer shaft roller
15 7170 Cone and roller assembly
16 7H338 Bearing assembly — transfer shaft (2)
17 7H348 Transfer shaft gear assembly
18 7L267 Funnel — transfer shaft
19 7F342 Gear — final drive input
20 7M102 Cone and roller assembly
21 7C236 Bearing cup
22 7F403 Bearing assembly (2)
23 7H369 Spacer
24 7H106 Retainer ring
25 7B364 Nut

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Clutches and Planet Gears

Item Part Number Description

1 7A262 Piston — low/reverse clutch
2 7B070 Spring — low/reverse clutch return
3 7D171 Race — low one-way clutch (OWC)— inner
4 7D483 Retaining ring — low OWC
5 7B070 Spring — low/reverse clutch wave
6 7B442 Steel plate — low/reverse clutch separator (5)
7 7B164 Friction plate assembly — low/reverse clutch (5)
8 7B066 Pressure plate — low/reverse clutch
9 7D483 Retaining ring — low/reverse clutch plate (selective)
10 7H199 Retainer — low gear OWC
11 7A089 OWC assembly — low
12 7D483 Retaining ring
13 7D392 Front ring gear
14 7A398 Gear assembly — front planet
15 7H375 Bearing assembly — front planet carrier thrust
16 7H362 Snap ring
17 7A399 Front planet sun gear assembly
18 7H337 Bearing assembly — front sun gear thrust
19 7D006 Gear assembly — rear planet
20 7H361 Snap ring

Clutches and Band

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Item Part Number Description

1 7D483 Retaining ring — reverse clutch
2 7A019 Rear sun gear assembly
3 7C041 Thrust bearing assembly — rear sun gear
4 7H351 Direct clutch hub assembly
5 7D483 Retaining ring
6 7B066 Pressure plate — forward/direct clutch (1 each)
7 7B164 Friction plate assembly — forward/direct clutch (forward 4, direct 3)
8 7B442 Steel plate — direct clutch (DC)(3)
9 7H363 Snap ring — DC balanced piston
10 7H359 Direct clutch balanced piston
11 7F235 Piston return spring assembly — forward/direct clutch
12 7A262 Piston assembly — direct clutch
13 7H335 Thrust bearing assembly — direct clutch
14 7F283 Cylinder assembly — direct clutch
15 7D483 Retaining ring — reverse clutch (selective)
16 7B066 Pressure plate — reverse clutch
17 7B442 Steel plate — reverse clutch (2)
18 7B164 Friction plate assembly — reverse clutch (2)
19 7H075 Spring retainer ring — reverse clutch
20 7D406 Spring retainer — reverse clutch
21 7B070 Piston return spring — reverse clutch
22 7D402 Piston assembly — reverse clutch
23 7D044 Drum assembly — intermediate and overdrive
24 7D034 Band assembly — intermediate and overdrive

Main Control Assembly

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Item Part Number Description

1 7D142 Valve assembly — manual control
2 7F194 Plate — spring retainer (7)
3 7H140 Spring — bypass clutch control (4)
4 7G179 Valve — bypass clutch control
5 7K720 Spring — modulation valve
6 7G408 Valve — line pressure modulator
7 W500100 Bolt M6 x 30 (3)
8 W705271 Bolt M6 x 63 (5)
9 7N266 Seal — valve body
10 W705271 Bolt M6 x 60 (5)
11 7A092 Body — control valve upper
12 7C155 Gasket — control valve body
13 7A008 Gasket — control body separator
14 7A101 Body — control valve lower
15 7R294 Stop — main regulator valve
16 7F445 Clip—throttle valve plunger sleeve
17 7A270 Spring — main fluid pressure regulator valve
18 7C338 Valve — main fluid pressure regulator
19 7G411 Spring — solenoid regulator valve
20 7H392 Valve — shift solenoid
21 7D400 Spring — intermediate servo accumulator
22 7D398 Piston — intermediate servo accumulator
23 7G408 Valve—converter pressure relief
24 7G316 Spring — converter regulator valve
25 7M040 Valve — lock-up control
26 7Z490 Gasket — solenoid body
27 7G179 Valve—low/reverse shift
28 7M040 Valve—3-4 shift
29 7G383 Main regulator valve variable force solenoid (VFS) (PCA)

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30 7H148 Shift solenoid (on/off) valve (SSA)

31 7H148 Shift solenoid (on/off) valve (SSB)
32 7G484 Pulse width modulation (PWM) solenoid valve (SSC)
33 7G484 PWM solenoid valve (SSE)
34 7G484 PWM solenoid valve (SSD)
35 7H185 Bracket — shift control solenoid hold down
36 W500211 Screw M6 x 12 (7)
37 W500012 Screw M6 x 14 (2)
38 7G391 Body — solenoid shift throttle pressure

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