ZF8HP45 70 Vac Interactive 12 6 17
2017-12-06
: Sonnax Zf8Hp45-70 Vac Interactive 12-6-17 ZF8HP45-70_Vac_Interactive_12-6-17 530 file tech_resource uploads
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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) = Holding Valves A & D • Bump/Flare shifts • Burnt clutch • Gear ratio & solenoid codes Position & Default Position Valves Replace with Sonnax Part No. 35740-20K Requires F-35740-TL20 & VB-FIX • 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 ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com ZF8HP45-70_VacTest Guide 12-06-17 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 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 Main PR 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 5 Test both passages together. 10 0 30 VACUUM TEST NOTE: Do not use this information for ZF8HP55 units as valve locations and porting differ. Main PR Sleeve Close this passage on the other side with the palm of your hand. 15 25 Holding Valves B1, C & E • 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 ©2017 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 12-06-17 Page 2 ZF8HP45, ZF8HP70 TIME TESTED • INDUSTRY TRUSTED OE Exploded View Upper Valve Body • ZF8HP45 Shown 101 105 102 103 B A 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 A Position Valve (Outboard) B Default Position Valve (Inboard) ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Pos-V Pos-V PosD-V PosD-V ZF8HP45-70_VacTest Guide 12-06-17 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 B SYS-DR-V A LP-V (Inboard) B RED-V (Outboard) A 201 Main Pressure Regulator Valve & 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 ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com 212 213 211 ZF8HP45-70_VacTest Guide 12-06-17 Page 4
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