ZF8HP45 70 Vac Interactive

Zf8Hp45-70 Vac Interactive ZF8HP45-70_Vac_Interactive ZF8HP45-70_Vac_Interactive 537 file tech_resource uploads sonnax-dev

2016-12-07

: Sonnax Zf8Hp45-70 Vac Interactive ZF8HP45-70_Vac_Interactive 169 pdf pdf uploads

Open the PDF directly: View PDF PDF.
Page Count: 4

DownloadZF8HP45-70 Vac Interactive
Open PDF In BrowserView PDF
ZF8HP45, ZF8HP70

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

20

15

10

25

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.

5

0
30
VACUUM
TEST

Upper Valve Body • ZF8HP45 Shown
NOTE: Do not use this information for ZF8HP55
units as valve locations and porting differ.

Click on Sonnax part numbers to see more information.

Holding Valve B2
•	 B Clutch failure
•	 5-6 Flare

TC Pressure Valve
•	 TCC codes & overheating
•	 Harsh downshifts
Replace with Sonnax Part No.
35740-18K
Requires F-35740-TL5 & VB-FIX

B2 Clutch NIC Valve
•	 B Clutch burned
•	 Delayed/No Forward &
Reverse
•	 NIC (Neutral Idle Control)
concerns

End Plugs



Replace with Sonnax Part No.
35740-22
Requires F-35740-TL22 & VB-FIX

•	 Burnt clutches
•	 Harsh/Soft/Flare shifts
•	 Pressure loss
Replace with Sonnax Part No.
35740-30K
End Plugs (3) =
Internal End Plugs (8) =



Clutch Holding Valve



•	 Bump/Flare shifts
•	 Burnt clutch
•	 Gear ratio & solenoid codes
Replace with Sonnax Part No.
35740-20K
Requires F-35740-TL20 & VB-FIX

Position Valve
•	 Delayed Forward & Reverse
•	 Delayed engagement

Accumulator Pistons
•	 EDS codes
•	 Firm shifts
•	 Harsh engagement

Test with dampener
upside down and test
plate orifice off center
from rubber piston end

Replace with Sonnax Part No.
95740-15K Contains 7 sets 
Patent No. 8,794,108

©2016 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

ZF8HP45-70_VacTest Guide  12-07-16
Page 1

ZF8HP45, ZF8HP70

TIME TESTED • INDUSTRY TRUSTED

Critical Wear Areas & Vacuum Test Locations

20

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.

Lower Valve Body • ZF8HP45 Shown

Click on Sonnax part numbers
to see more information.

	
	
	
	

TC Switch Valve

TCC Valve

•	 Harsh/Erratic line pressure
•	 Restricted converter/lube flow

•	 No lockup
•	 Excess TCC slip

Replace with Sonnax Part No.
35740-03

Replace with Sonnax Part No. 35740-05
Requires F-35740-TL5 & VB-FIX

•	 Converter shudder & TCC slip
•	 TCC codes
•	 Overheated converter

5



Replace with Sonnax Part No.
35740-13K
Requires F-35740-TL13 & VB-FIX



Clutch Valve B1
•	 Slip on take off
•	 Gear ratio errors
•	 B Clutch failure

Pressure Regulator
Valve
•	 Harsh/Soft shifts
•	 High line pressure
•	 Burnt clutches

Close port on
opposite side
when testing.

Replace with Sonnax Part No.
35740-01K
Requires F-35740-TL & VB-FIX

Park Pawl Release
Valve

10

0
30
VACUUM
TEST

NOTE: Do not use this
information for ZF8HP55
units as valve locations 	
and porting differ.

Pressure Regulator Sleeve

Test both
passages
together.

15

25

Clutch Holding Valve
•	 Bump/Flare shifts
•	 Burnt clutch
•	 Gear ratio & solenoid codes
Test both
passages
together.

Test both
passages
together.

Replace with Sonnax Part No.
35740-20K
Requires F-35740-TL20 & VB-FIX

•	 Park will not release
•	 Park position errors

Clutch Valve D
•	 Gear ratio errors 4-8th gears
•	 Slips in Reverse
•	 D Clutch failure

Clutch Valve A
•	 Slip in Drive or Reverse
•	 Gear ratio errors
•	 A Clutch failure

Remove spring when
testing. Center valve
spool in opening.

•	 Harsh/Flare/Neutral shifts
•	 Gear ratio & solenoid codes
•	 Wrong gear starts
Replace with Sonnax Part No.
35740-21K
Requires F-35740-TL20 & VB-FIX
















Priming Valve

End Plugs
Clutch Valve C

Clutch Valve E

•	 Slip on take off
•	 Gear ratio codes
•	 C Clutch failure

•	 Slip on 1-2
•	 Gear ratio codes
•	 E Clutch failure

©2016 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

•	 Burnt clutches
•	 Harsh/Soft/Flare shifts
•	 Pressure loss
Replace with Sonnax Part No.
35740-30K
End Plugs (3) =
Internal End Plugs (8) =





ZF8HP45-70_VacTest Guide  12-07-16
Page 2

ZF8HP45, ZF8HP70

TIME TESTED • INDUSTRY TRUSTED

OE Exploded View
Upper Valve Body • ZF8HP45 Shown

101
105
102

103

106

104

Upper Valve Body Descriptions

I.D.
No.

Description

ZF
Chrysler
Valve Name Valve Name

101

Holding Valve B2

HV-B2

HV-B2

102

Clutch Valve B2 - B Clutch NIC
(Neutral Idle Control)

KV-B2

CV-B2

103

Holding Valve A

HV-A

HV-A

104

Holding Valve D

HV-D

HV-D

105

Torque Converter Pressure Valve

WD-V

TC-V

106

Position Valve (Outboard)
Default Position Valve (Inboard)

Pos-V,
PosD-V

Pos-V,
PosD-V

©2016 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

ZF8HP45-70_VacTest Guide  12-07-16
Page 3

ZF8HP45, ZF8HP70

TIME TESTED • INDUSTRY TRUSTED

OE Exploded View
Lower Valve Body • ZF8HP45 Shown

201

Lower Valve Body Descriptions

I.D.
Description
No.

ZF Valve
Name

Chrysler
Valve Name

SYS-DR-V

LP-V (Inboard)
RED-V (Outboard)

201

Main Pressure Regulator
Valve and Sleeve

202

Torque Converter Switch Valve

SV-WD

SV-TC

203

Torque Converter Clutch Valve

WK-V

TCC-V

204

Clutch Valve B1

KV-B1

CV-B1

205

Holding Valve B1

HV-B1

HV-B1

206

Priming Valve

DR-RED-V

PR-V

207

Park Pawl Release Valve

PS-V

Park-V

208

Holding Valve C

HV-C

HV-C

209

Clutch Valve C

KV-C

CV-C

210

Clutch Valve E

KV-E

CV-E

211

Holding Valve E

HV-E

HV-E

212

Clutch Valve D

KV-D

CV-D

213

Clutch Valve A

KV-A

CV-A

203
202

205
204

209 210

206 207 208
©2016 Sonnax Industries, Inc.
800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com

212 213

211
ZF8HP45-70_VacTest Guide  12-07-16
Page 4
Source Exif Data: 
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.7
Linearized                      : Yes
XMP Toolkit                     : Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27
Create Date                     : 2016:12:07 14:36:34-05:00
Metadata Date                   : 2016:12:07 14:36:36-05:00
Modify Date                     : 2016:12:07 14:36:36-05:00
Creator Tool                    : Adobe InDesign CS6 (Windows)
Instance ID                     : uuid:df06fc31-9520-4fb8-8eb0-1a42c539fe5a
Original Document ID            : xmp.did:9F571B58FC5FE211BB0CAB0CF77DDCA2
Document ID                     : xmp.id:36BD646FB4BCE611900EAF3D6EE4BB0D
Rendition Class                 : proof:pdf
Derived From Instance ID        : xmp.iid:35BD646FB4BCE611900EAF3D6EE4BB0D
Derived From Document ID        : xmp.did:02080173239AE611930FA461A0FFF9F3
Derived From Original Document ID: xmp.did:9F571B58FC5FE211BB0CAB0CF77DDCA2
Derived From Rendition Class    : default
History Action                  : converted
History Parameters              : from application/x-indesign to application/pdf
History Software Agent          : Adobe InDesign CS6 (Windows)
History Changed                 : /
History When                    : 2016:12:07 14:36:34-05:00
Format                          : application/pdf
Producer                        : Adobe PDF Library 10.0.1
Trapped                         : False
Page Count                      : 4
Creator                         : Adobe InDesign CS6 (Windows)
EXIF Metadata provided by EXIF.tools

Navigation menu