AW55 50SN ZIP IN

2016-11-22

: Sonnax Aw55-50Sn-Zip-In AW55-50SN-ZIP-IN 1784 file instruction uploads

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PART NUMBER AW55-50SN-ZIP QUICK GUIDE

11A

11B

Front Control

Valve Body

Rear Control

Valve Body

2nd Rear Control

Valve Body

11E

Spring

Middle Control

Valve Body

(Front)

Middle Control

Valve Body

(Back)

11D

11C

CAUTIONCAUTION

Before removing OE

boost sleeve, take

note of the adjustable

step/retainer location

and ensure the Sonnax sleeve

is installed at the same height/

location. Failure to do so will

result in incorrect line rise.

CAUTIONCAUTION

Spring not utilized

in all units. See

step seven of

installation steps

on page two for details.

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 1

AW55-50SN, AW55-51SN, AF23/33, RE5F22A

ZIP KIT®

Parts are labeled here in order of installation. See other side of sheet for details on Zip Kit contents.

installation Diagram

In addition to general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum

testing and additional repair options for higher mileage units or for repairing specic complaints which are beyond the

scope of this kit.

NOTE: Re-use

OE spring.

AW55-50SN, AW55-51SN, AF23/33, RE5F22A ZIP KIT® Quick Guide

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 2

Step Replace OE Solenoid

Modulator Line-up

NOTE: Remove all OE bore components. Discard all except OE end

plug and retainer which will be reused.

Install Sonnax solenoid modulator valve assembly with open end out-

board, followed by the spacer sleeve also with oriced end outboard.

Install Sonnax spring. Reinstall OE end plug and retainer.

Packaging Pocket 1

• Valve • Valve Sleeve • Spacer Sleeve • Spring

Step Replace OE End Plugs

Place O-rings into shallow grooves on end plugs. Lubricate with Sonnax

slippery stick O-LUBE. Roll on bench to size. Install end plugs with the

O-ring end outboard.

Packaging Pocket 2

2A. • End Plugs, Small (4) • O-Rings, Small (6) 2 extra

2B. • End Plugs, Large • O-Rings, Large (2) 1 extra

Step Replace OE Solenoid

Relay Assembly

Packaging Pocket 3

• Valve • Sleeve

Step Replace OE Pressure

Regulator Valve

CAUTION: Before removing OE boost sleeve, take note of the adjust-

able step/retainer location and ensure the Sonnax sleeve is installed at

the same height/location. Failure to do so will result in incorrect line rise.

NOTE: Remove all OE bore components. Discard all except OE spring

and retainer to use in Step 5.

Place O-ring into single, deep and narrow groove on balance pin.

Lubricate with Sonnax slippery stick O-LUBE. Roll on bench to size.

Install balance pin into pressure regulator valve, then install assembly

into bore. Retain balance pin in the bottom of the bore with retaining

clip. Make sure clip ts in groove securely. Due to casting variations,

ling a small amount of material from the inboard face of the balance

pin may be required. Remove only enough material to securely install

the clip. For vacuum testing of the Sonnax valve, only the inboard

(balance) and outboard/spring (SLT) locations need to be checked.

Packaging Pocket 4 Components are Patent Pending

• PR Valve • Balance Pin • O-Rings (2) 1 extra • Retaining Clip

Step

Replace OE Boost Valve Assy

Place OE spring over open end of boost sleeve. Install spring end rst

and retain in bore with OE retainer. Make sure to install the Sonnax

sleeve at the same height/location as the OE sleeve.

Packaging Pocket 5

• Valve • Sleeve

Step Replace OE Lockup Relay

Control Valve

Packaging Pocket 6

• Valve • Sleeve

Step Replace OE B5 Control

Valve Spring

CAUTION: This spring is used in "B" or "C" valve body castings

only (Figures 1 and 4 of Installation and Testing booklet show I.D.

location). If your B5 control valve did not originally use a spring

("A" casting or no letter), DO NOT install Sonnax spring.

If an "A" or no-letter casting core is to be used in a vehicle that originally

contained a "B" or "C" casting, spring must be installed. Position spring on

inboard end of valve.

Packaging Pocket 7

• Spring

Step

Replace OE Line Pressure

Accumulator Piston & Springs

Place O-rings into shallow grooves on pistons. Lubricate with Sonnax slip-

pery stick O-LUBE. Roll on bench to size. Install piston with open end facing

outboard. Then install large spring followed by small spring.

Packaging Pocket 8

• Accumulator Piston • O-Rings (3) 1 extra • Spring, Large

• Spring, Small

Step Replace OE Secondary

Regulator Valve & Spring

Place scarf-cut seal into shallow groove on valve. Rolling the seal into a

smaller diameter before placing the seal in the groove will help to keep the

seal surface below the valve diameter, allowing for easier installation. Install

valve into bore, seal end rst, followed by the spring.

NOTE: Due to the design changes on the Sonnax valve, vacuum testing at

the two inboard ports is not a valid sealing test. The Sonnax valve requires

balance uid to travel through the valve and push the seal outward to

conform to the worn bore.

Packaging Pocket 9

• Valve • Seals (2) 1 extra • Spring

Step Replace OE Lockup

Control Valve Assembly

Packaging Pocket 10

• Valve • Sleeve NOTE: Re-use OE spring.

Step Replace OE Springs

Packaging Pocket 11

11A. Line Relief Spring, Red

11B. B4 Release & Reverse Inhibit Small Springs (2), No color

NOTE: These are not used in all castings.

11C. TCC Check Valve Spring, Yellow

11D. Cooler Bypass Spring, Large, No color

11E. TCC Check Valve Spring, White

CAUTIONCAUTION

Zip Kit Contents & Installation Steps

IMPORTANT NOTE: The AW55-50SN/51SN, AF23/33, RE5F22A transmission is used in

GM, Volvo, Saturn, Saab, Opel and Renault vehicles. What is a normal operating condition

for one vehicle may not be for another due to the differences in operating modes and shift

strategies used by the various manufacturers. The OE specications given in this booklet

are for GM units. Check OE information specic for your application during rebuild.

Electronic Cautions

Reashing

The TCM (transmission control module) has memorized values that aid in shift

control. Most of the manufacturers have upgrades for this application. Check

OE bulletins and with your local dealers to ensure the latest updates have been

performed for your application.

Shift Adaptations

is transmission uses adaptive strategy to adjust the various shift feels. After

valve body work, these shift adaptations must be cleared and relearned or shift feel

complaints and reduced transmission life can occur. e dierent manufacturers use

dierent relearn procedures. Check OE specications to ensure proper relearn for

your application.

Solenoids

is unit uses 3 linear solenoids (SLU, SLT and SLS) calibrated to the valve body

that are critical to shift feel (Figure 1). ese solenoids overlap electronically and

hydraulically which makes diagnosis dicult. Additional technical and rebuild/

replace information is included on pages 2 – 4. is transmission also uses 5 on/o

style solenoids used to control the position of the shift valves. All solenoids should

be cleaned to remove debris that results in sticking and malfunction.

Range Gear SOL

SOL

Second

Clutch

(B2)

Coast

Clutch

(B1)

Second

Sprag

(F1)

Low

Sprag

(F2)

Low/Rev

Clutch

(B3)

FWD

Clutch

(C1)

Direct

Clutch

(C2)

4-5

Clutch

(C3)

3rd

Band

(B4)

1-2/Rev

Clutch

(B5)

Park P Off Off Off Off Off Applied

Reverse R Off* Off On* Off On* Applied Applied Applied

Neutral N Off Off Off Off Off Applied

Drive

1 On Off On Off Off Hold Applied Applied

2Off On On Off Off Applied Applied Hold Applied Applied

3Off On On On Off Applied Applied Hold Applied Applied

4Off On Off On Off Applied Applied Hold Applied Applied

5Off Off Off On Off Applied Applied Applied Applied

Limp Off Off Off Off Off Applied Applied Applied Applied

Interm

1 On Off On Off Off Hold Applied Applied

2Off On On Off Off Applied Applied Hold Applied Applied

3Off On On On Off Applied Applied Hold Applied Applied

Low

1 E/B On Off On Off On Hold Applied Applied Applied

2Off On On Off Off Applied Applied Hold Applied Applied

* If vehicle speed is above 7 km/h (4 mph), the TCM commands the shift solenoids to inhibit reverse

Apply Component Chart Figure 2

Figure 1

SLU, Black

SLS, Green

Connector Up

"A" or

No Code

SLT, Blue

Connector Up

Must Use

Short Bracket

Valve Body I.D. Early/Short Linear Solenoid Set

AW55-50SN, AW55-51SN, AF23/33, RE5F22A

ZIP KIT®

PART NUMBER AW55-50SN-ZIP INSTALLATION & TESTING BOOKLET

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 1

AW55-50SN ZIP KIT® Installation & Testing Booklet

Page 2 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

TIME TESTED • INDUSTRY TRUSTED

Solenoids

On/Off Shift Solenoids

The chart provides resistances for checking solenoids,

function to aid in diagnosis, and connector and wire

color to ensure proper assembly.

Linear (SLU, SLS, SLT) Solenoids

Handle these solenoids with care. Inadvertent turning of

the adjuster at the end of the solenoid will affect pressure

control and cause shift complaints. It is also common

for these solenoids to crack at the casting neck flange

area or connectors due to rough shipping and handling.

Examine the solenoids first to ensure they are not cracked

or otherwise damaged and are free of debris.

Linear Solenoid

Installation

The length of the SLT and SLS solenoid snouts have

changed, as well as the retaining bracket and installation orientation of the connec-

tors. The SLU reamains the same for all valve bodies. Proper matching of parts and

correct installation is necessary to avoid shift complaints (Figures 1, 3–7).

No Code & A Code Castings

SLT and SLS: Connector faces up (away from 5 on/off solenoid) when properly

installed (Figure 1).

• If short SLS and SLT solenoids (1.408" w/hole) are used, an early style bracket

must be used (Figures 5 & 6).

• If long SLS and SLT solenoids (1.510" w/slot) are used, a late style bracket

must be used (Figures 5 & 6).

B & C Code Castings

SLT & SLS: Connector faces down (toward the 5 on/off solenoid) when properly

installed (Figure 4).

• Must use long solenoid (1.510" w/slot) (Figure 6)

• Must use late bracket (Figure 5)

Figure 7

.195"

Solenoid Connector Wire Color (s) Flow Resistance Function

SLU Black Green/Brown N.C. 5.0 - 5.6

ohms at 68"

TCC apply, reverse

1-2,

2-3 up/down shift

SLT Blue Green/Gray N.O. 5.0 - 5.6

ohms at 68"

Line rise,

engagements,

converter pressure

SLS Green Blue/Red N.O. 5.0 - 5.6

ohms at 68"

Clutch pressure,

shift quality

S1 Black White N.O. 13.5 - 15.5

ohms at 68"

1st, 1-2 shift,

reverse

S2 Black/Gray Black N.O. - GM

N.C. - Volvo

13.5 - 15.5

ohms at 68" 2nd, 3rd, 4-5 shift

S3 Gray Yellow N.C. 13.5 - 15.5

ohms at 68"

Reverse, 3-4 shift

fwd engagement

S4 Blue/Green Purple/Red N.O. 13.5 - 15.5

ohms at 68" 3, 4, 5, 2-3 shift

S5 Green/Red/

Gray

Blue/Black -

'02 Volvo N.C. 13.5 - 15.5

ohms at 68"

Reverse

engagement

Solenoid Apply Chart Figure 3

Figure 4

SLU, Black

SLS, Green

Connector Down

"B" or "C"

Code

SLT, Blue

Connector Down

Must Use Wide Bracket

Valve Body I.D. Late Linear Solenoid Set

Figure 5

Wide Bracket:

Early/Long

Late/Long

Short Bracket:

Early/Short

Figure 6

Early/Short

59947-68K

Late/Long

59947-70K

Early/Long

59947-69K

SLS (shown) and SLT

Length Identification

1.408" 1.510" 1.510"

AW55-50SN ZIP KIT® Installation & Testing Booklet

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 3

TIME TESTED • INDUSTRY TRUSTED

Figure 10

Important Solenoid Port Check

Always double-check that the solenoid ports mate radially to the ports in the valve

body casting.

Linear Solenoid Adjustment

e adjustment screws on the end of the solenoids set the spring force against the

valve. e spring opposes the force of the solenoid coil. To avoid severe drivability

issues, the adjuster should be set at or near the OE position, which averages .195"

(Figure 7) measured from the end of the adjuster to the end of the solenoid mani-

fold. If the adjustment is too far o (either in or out) a variety of drivability issues

occur. In many instances, an out-of-adjustment solenoid may cause the TCM to set

a gear ratio code or a solenoid amperage high/low code. Turning the SLT adjust-

er counter-clockwise reduces SLT pressure, which will lower line and converter

pressure. Turning the SLS adjuster counter-clockwise reduces SLS pressure, which

will reduce clutch apply pressures. e charts in

Figures 8 & 9 are for reference on which solenoids to

adjust and in what direction, should tuning be required.

Heat Testing Linear Solenoids

A common issue found with the linear solenoids is a

hot drivability concern. is happens when the plung-

er starts to seize within the coil bushings at operating

temperature. e results are acceptable shifts when

cool, but a harsh downshift or are upshift (often 3-2

and 2-3) over the 215°F range. If you suspect this, a

slow or sticking linear solenoid can be identied by a

hot soak test. Heat the solenoid to operating tempera-

ture. Using a shop rag or some method of protecting

your hand from the heat, pry and hold the valve away

from the plunger (with a pick or small screwdriver

through casting slot) and shake the solenoid. In a good

solenoid, the plunger shaft will be free to rattle back

and forth (Figures 10 & 11).

Solenoid Adjustments

Solenoid Adjust Inward (CW) Adjust Outward (CCW)

S LT

Line Rise Solenoid

Blue Connector

Increase SLT pressure if:

• Neutral-to-Drive delay

• Long shifts

• Low cooler ow

Decrease SLT pressure if:

• Long 2-3 shift due to clutch

overlap (2-3 Bind-up)

• 3-2 Coastdown bump

• Harsh forward engagement

• Harsh TCC apply

• Loss of lube or cooler ow

SLS

Shift Pressure

Solenoid

Green Connector

Increase SLS pressure if:

• Soft upshifts

• Low speed 2-3 are

• Slight RPM are on 3-4,

4-5 shifts

Decrease SLS pressure if:

• Harsh reverse

• Harsh 1-2 shift

• Harsh 2-3 shift with end bump

• Loss of TCC apply

• High C1 clutch pressure

• 3-2 Shift are/bang

SLU

Lockup Solenoid

Black Connector

Decrease SLU pressure if:

• Soft shifts

• Early TCC apply

• No TCC lockup

Increase SLU pressure if:

• Hard 1-2, 2-1 shift

• Firm/Late TCC apply

Figure 9

Figure 8

Linear Solenoid Strategy

Gear SLU SLT SLS

Park/Drive X

Park/Reverse X X

1-2, 2-1 X

2-3 X X

3-2 X X

3-4, 4-3 TC X

4-5, 5-4 TC X

TCC X

All Up & Downshifts X X

Key: X = Greatest effect of this solenoid on shift indicated.

TC = Drivability effect on converter clutch.

Figure 11

Contaminants

lodge in this end

on OE design.

Pry valve for

bench test.

Cap and crimp determine

the stack-up length and

plunger travel. This end of solenoid seals an oil

circuit at large O.D. of clutch control

valve and can be vacuum tested.

5.0–5.6

ohms Caution lifting

lock tab

AW55-50SN ZIP KIT® Installation & Testing Booklet

Page 4 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

TIME TESTED • INDUSTRY TRUSTED

Solenoid Replacements

Aisin AW 55-50SN, 55-51SN, AF23/33 and RE5F22A linear solenoids are used to

control line rise (SLT), the converter clutch (SLU) and the oil ow rate and accu-

mulation for the clutch circuits (SLS). e ow-to and function of these solenoids

overlap, making diagnosis dicult. e solenoids are prone to sticking of the inter-

nal pintle, creating inconsistent movement of the solenoid valves. Shift complaints

and pressure/ow related issues result. Remanufactured linear solenoid kits (set of

three solenoids) from Sonnax (Figure 12) were developed with an exclusive Sonnax

process that eliminates sticking solenoid problems. ese solenoids are 100% tested

for pressure curve performance on a valve body test stand and calibrated to OE

specications. Readjustment should not be required if the valve body leakage has

been addressed and a relearn process completed.

Casting & Plate Combinations

There are various castings and plates that must be properly matched to ensure correct

function. The front control valve body (Figure 13) may have an exhaust hole that

will correlate to the need for a check valve & spring on the opposite side (Figure 14).

Castings with this exhaust hole must be matched with a middle control casting with

2 flags (Figure 15) and a rear control plate with the two noted orifices.

No exhaust

check valve

Figure 13

Front Control Valve Body

Exhaust

Figure 14

Two Flag Casting:

(As shown) Must go

with exhaust type

plate and front control.

One Flag Casting:

(Not shown/flag on

right) Assemblies with

a non-exhaust plate

and front control.

Middle Control Valve

Body - Cover Side

Figure 15

Rear Control

Valve Body

Plate

Non-Exhaust Style Plate

Figure 12

Remanufactured Linear Solenoid Kits

Sonnax Part Number Kit Style

59947-68K Early/Short

59947-69K Early/Long

59947-70K Late/Long

Caution: Ensure correct style of SLS/SLT solenoid, based

on connector direction and bracket design (Figures 1, 4 – 6).

SLS

Solenoid

Green

SLT

Solenoid

Blue

SLU

Solenoid

Black

AW55-50SN ZIP KIT® Installation & Testing Booklet

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 5

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed

to with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear and Sonnax parts noted for replacement.

For specic vacuum test information, refer to individual part instructions included in kits and available at www.sonnax.com.

AW55-50SN Valve Body

VACUUM

TEST

Front Control Valve Body

(No exhaust style)

3rd Gear Band (B4) Release Valve

• 2-3, 3-2 Shift concern • 3-2 Neutral

• Harsh 3-2 coast downshift

• 2-3 Flare • 2-3 Neutral

Replace with Sonnax Part No.

59947-26K

Requires F-59947-TL26 & VB-FIX

Seal the port

on the opposite

side of casting

when testing

these locations.

Solenoid Relay Valve

& Plunger/Sleeve Assembly

• No TCC apply • Shift concerns • Harsh shifts in all ranges

• Engine stall during engagements • B5 clutch distress

• No upshifts after 2nd or are on 2-3 shift

Replace with Sonnax Part No.

59947-05K

Solenoid Modulator Valve

• Loss of 3rd, 4th and 5th gear

• No TCC apply • Low line pressure

• Delayed forward • 2-3 are upshifts

• 5th Gear only

Replace with Sonnax Part No.

59947-34K

Requires F-59947-TL34 & VB-FIX

Neutral Relay Valve

• No neutral control

• No drive

• Slips in Drive

Replace with Sonnax Part No.

59947-35K

Requires F-59947-TL34 & VB-FIX

Main Pressure Regulator Valve

& Boost Valve Assembly

• Harsh or soft shifts • Late shifts • Reverse slips

• Delayed engagements • Converter apply/release

Replace with Sonnax Part No.

59947-07K or 59947-12K

59947-12K Requires F-59947-TL12 & VB-FIX

Middle Control

Valve Body

(Rear side)

Middle Control

Valve Body

(Cover side)

AW55-50SN ZIP KIT® Installation & Testing Booklet

Page 6 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed

to with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear and Sonnax parts noted for replacement.

For specic vacuum test information, refer to individual part instructions included in kits and available at www.sonnax.com.

AW55-50SN Valve Body • Rear Control (Back, Front and Side views)

No. 2 Rear Control

Valve Body

Front View

Back View

Lockup Relay Valve

• TCC apply/release problems

• Inadequate lubrication

• Converter codes

Replace with Sonnax Part No.

59947-01K or 59947-77K

59947-77K Requires

F-97741-TL20

& VB-FIX

Seal the port

on the opposite

side of casting

when testing

these locations.

Line Pressure

Control (SLT)

Accumulator

Assembly

• Delayed Forward

engagement

• Low line pressure

• Harsh shifts

• Flare 2-3 upshift

• Erratic SLT pressure

Replace with Sonnax

Part No. 59947-LPC

M2 Shift Valve

• No Reverse

• No neutral control

• No 1st, 2nd, 3rd & 4th gear

Shift Pressure

Relay Valve

• Slips in Reverse

• No engine braking in

2nd, 3rd & 4th gear

Shift Pressure

Control Valve

• Harsh shifts

• B1, B2, and/or C2

Clutches burned

• No 5th gear

• High line pressure in

Reverse

• Low Reverse pressure

Replace with Sonnax

Part No. 59947-38K

Shift Pressure Control Plunger Valve

• Harsh shifts • B1, B2 and/or C2 Clutches burned

• High line pressure • Low Reverse pressure

Replace with Sonnax Part No. 59947-75K

Secondary

Regulator Valve

• Overheated uids

• Harsh Reverse

• Overheated/damaged

bushings & converter

• TCC slippage/RPM surge

• Poor shift quality

• High/Low SLT pressure

Replace with Sonnax

Part No. 59947-16K

Requires F-59947-TL16 & VB-FIX

Lockup Control Valve

& Sleeve/Plunger Assembly

• TCC apply/release problems

• Converter codes

• Burnt converter

Replace with Sonnax Part No.

59947-03K or 59947-29K

59947-29K Requires F-59947-TL29, F-15741-TL29PL & VB-FIX

Side View

AW55-50SN ZIP KIT® Installation & Testing Booklet

800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Page 7

TIME TESTED • INDUSTRY TRUSTED

OE Exploded View

Front & Middle Control Valve Body • AW55-50SN Valve Body Shown Here

NOTE: Depending upon vehicle application, the OE springs shown may not be present.

208

207

201

202

203

204

205

206

101 104

102

103

Middle Control Valve Body Descriptions

I.D. No. Description

201 Manual Valve

202 3rd Gear Band (B4) Release Valve

203 U1 Shift Valve

204 M1 Shift Valve

205 U2 Shift Valve

206 Primary Regulator Valve

& Plunger Valve Assembly

207 Reverse Shift Ball Check Valve

208 Solenoid Relay Valve

& Plunger Valve Assembly

Front Control Valve Body Descriptions

I.D. No. Description

101 Forward Clutch (C1) Control Valve

102 Neutral Relay Valve

103 2nd Coast Clutch (B1) Control Valve

104 Solenoid Modulator Valve

Front Control Valve Body

(No-exhaust style)

Middle Control Valve Body

(Cover side)

Middle Control Valve Body

(Rear side)

AW55-50SN ZIP KIT® Installation & Testing Booklet

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TIME TESTED • INDUSTRY TRUSTED

308

307 301

302

303

305

306

304

Bolt

Length

(mm)

Torque

(in-lb)

No. Bolts

Required

A 10 62 2

B 12 62 1

C 13 62 1

D 16 89 2

E 16 62 2

F 20 62 5

G 28 62 2

H 35 62 2

I 40 62 1

J 49.5 62 4

K 50 89 4

L 50 62 2

M 55 62 3

N 62 62 1

O 76 62 1

Figure 17

Torque Specication ChartBolt Locations

Figure 16

No. 2 Rear Control

Valve Body Descriptions

I.D. No. Description

401 Lockup Control Valve

& Plunger Valve Assembly

402 Reverse Shift Restrict Ball

Check Valve

403 2nd Clutch (B2) Control Valve

403

Rear Control Valve Body Descriptions

I.D. No. Description

301 3rd Gear Band (B4) Control Valve

302 Shift Pressure Relay Valve

303 M2 Shift Valve

304 Shift Pressure Control Valve

& Plunger Valve Assembly

305 Secondary Regulator Valve

306 Line Pressure Control (SLT) Accumulator

307 1-2 Reverse Clutch (B5) Control Valve

308 Lockup Relay Valve

& Plunger Valve Assembly

401

402

Rear Control Valve Body

OE Exploded View

Rear & No. 2 Rear Control Valve Body • AW55-50SN Valve Body Shown Here

No. 2 Rear Control

Valve Body

AW55 50SN ZIP IN

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