U760E Vac Interactive
2017-10-27
: Sonnax U760E Vac Interactive U760E_Vac_Interactive 641 file tech_resource uploads
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Toyota/Lexus U760E, U760F 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. Upper Valve Body • U760E Shown • Harsh 1-2 or 5-6 shift • Burnt B1 brake 10 5 0 30 VACUUM TEST B2 Accumulator Piston • Harsh Reverse engagement • Burnt B2 brake B1 Accumulator Piston 15 25 Replace with Sonnax Part No. 47740-11K Replace with Sonnax Part No. 47740-11K C1 Accumulator Piston • Harsh/Delayed Forward engagement • Burnt C1 clutch Replace with Sonnax Part No. 47740-12K B3 Accumulator Piston C2 Accumulator Piston • Harsh Reverse engagement • Harsh 2-3 or 4-5 shift • Burnt B3 brake • Harsh 3-4 shift • Burnt C2 clutch Replace with Sonnax Part No. 47740-11K Replace with Sonnax Part No. 47740-11K Secondary Pressure Regulator Valve • Overheated transmission • Bushing/Bearing failures • Lube-related failures Replace with Sonnax Part No. 47740-26K Requires F-47740-TL26 & VB-FIX Reverse Sequence Valve • Loss of critical line & SLT pressures • Shift complaints • Burnt clutches & brakes Test: Test this port with valve blocked outboard .125" with OE retainer and sealing port on back with thumb. • Converter apply/release concerns • Converter codes; P0741 • Overheated transmission End Plugs Replace with Sonnax Part No. 47740-21K NOTE: Several Locations = • Delayed Reverse engagement • Low Reverse pressure • Burnt B2 or B3 brake Lockup Relay Valve Test: Test this port with valve blocked inboard .125" with OE retainer. Test: Test each port with valve blocked outboard .125" with OE retainer. Lockup Control Boost Assembly • Converter apply/release concerns • Converter codes; P2757, P0741 • Overheated transmission Replace with Sonnax Part No. 47740-06K Lockup Control Valve • Converter apply/release concerns • Converter codes; P2757, P0741 • Overheated transmission Replace with Sonnax Part No. 47740-30K Requires F-47740-TL30 & VB-FIX Click on Sonnax part numbers to see more information. ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com U760E_VacTestGuide 10-26-17 Page 1 Toyota/Lexus U760E, U760F 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. • 1-2 & 5-6 Shift complaints • Burnt B1 brake Replace with Sonnax Part No. 47740-40K Test: Block this port and port on back when testing. • 1-2 Long slide • Clutch failure • B1 brake clutches burned Replace with Sonnax Part No. 47740-44K Requires F-47740-TL44 & VB-FIX Test: Test this port with valve blocked inboard .218" dia. checkball. Note: Seal port on back when testing. Replace with Sonnax Part No. 47740-02K Requires F-47740-TL2 & VB-FIX Sequence Valve • Shift complaints • Burnt clutches/brakes Note: Seal port on back when testing.** B2 Apply Control Valve 5 B1 Apply Boost Assembly B1 Apply Control Valve • High/Low line pressure • Harsh/Soft shifts • Burnt clutches/brakes 10 0 30 VACUUM TEST Click on Sonnax part numbers to see more information. Middle Valve Body – Lower Side U760E Shown Primary Pressure Regulator Valve 15 25 • Delayed Reverse • Burnt B2 brake Replace with Sonnax Part No. 47740-27K Requires F-47740-TL27 & VB-FIX Clutch Control Valve • 4-5 Flare/Harsh • Delayed Reverse Replace with Sonnax Part No. 47740-22K Requires F-47740-TL22 & VB-FIX C2 Clutch Apply Control Valve • Slipping 4th, 5th, 6th gear • Burnt C2 clutch Test: Test this port and port on back when testing B2 Apply Control Valve.** Middle Valve Body – Back Side U760E Shown B2 Control Valve Note: Seal when testing B1 apply control valve. • Delayed Reverse • Burnt B2 brake Replace with Sonnax Part No. 47740-35K Requires F-47740-TL35 & VB-FIX Note: Seal when testing B1 apply boost assembly. Solenoid Modulator Valve Note: Seal when testing pressure regulator valve. • Shift complaints • Solenoid codes • TCC slip • Loss of control pressures Replace with Sonnax Part No. 47740-25K Requires F-47740-TL24 & VB-FIX ** These two passages are connected. The mat will provide the seal for the Middle Valve Body, Upper side. The passage indicated (**) will also need to be sealed to Vacuum test the circuit. Reverse Boost Assembly • Delayed Reverse • Low line pressure in Reverse • Burnt B2 & C3 brakes Note: Seal when testing B2 apply control valve.** Replace with Sonnax Part No. 47740-38K ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com U760E_VacTestGuide 10-26-17 Page 2 Toyota/Lexus U760E, U760F TIME TESTED • INDUSTRY TRUSTED OE Exploded View Upper Valve Body • U760E Shown NOTE: Depending upon vehicle application, the OE springs shown may not be present. 111 110 101 102 103 .393" dia. Checkballs .218" dia. Checkball 104 105 109 Plastic Check Valve Upper Valve Body Descriptions I.D. No. 106 107 108 ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com Description 101 Lockup Control Valve (inboard) Lockup Control Boost Assembly (outboard) 102 Lockup Relay Valve 103 Reverse Sequence Valve 104 Secondary Pressure Regulator Valve 105 B3 Accumulator Piston 106 B1 Accumulator Piston 107 B2 Accumulator Piston 108 C1 Accumulator Piston 109 C2 Accumulator Piston 110 Lube Relief Check Valve 111 Converter Relief Check Valve U760E_VacTestGuide 10-26-17 Page 3 Toyota/Lexus U760E, U760F TIME TESTED • INDUSTRY TRUSTED OE Exploded View Middle Valve Body • U760E Shown NOTE: Depending upon vehicle application, the OE springs shown may not be present. .393" dia. Checkballs 201 Filter 202 Line Pressure Blow-Off Checkvalve & Spring 203 .218" dia. Checkball 204 .393" dia. Checkballs 205 Filter 206 207 208 209 Middle Valve Body Descriptions Middle Valve Body Descriptions ID No. ID No. Description Description 201 B1 Apply Control Valve (inboard) B1 Apply Boost Assembly (outboard) 206 B2 Apply Control Relay Valve (inboard) B2 Apply Control Valve (outboard) 202 Primary Pressure Regulator Valve (inboard) Reverse Boost Assembly (outboard) 207 B2 Control Valve (inboard) B2 Control Relay Valve (outboard) 203 Sequence Valve 208 Manual Valve 204 Clutch Control Valve 209 Solenoid Modulator Valve 205 C2 Clutch Apply Control Valve ©2017 Sonnax Industries, Inc. 800-843-2600 • 802-463-9722 • F: 802-463-4059 • www.sonnax.com U760E_VacTestGuide 10-26-17 Page 4
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