F025 Tech Install
2018-08-16
: Sonnax F025-Techinstall F025-TechInstall 4045 instructions part uploads
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R E M ANUFAC T UR E D VA LVE BO DIES Te c h & I n s t a l l T i p s FNR5, FN5A-EL Remanufactured Valve Body FNR5 Main Valve Body Part No. F025 FNR5 Secondary Valve Body Valve Body Installation Tips SSA PWM SSB PWM SSC PWM Main Valve Body 1 2 3 Figure 2 Ground Strap Bolt Location 14 4 7 8 9 10 SSD PCA PWM 11 SSE 12 Torque all bolts to 80 in-lb in the sequence shown; starting with 1. = 40mm long valve body-to-case bolts = 71mm long valve body-to-case bolts N-D Accumulator NOTE: 1-2 Accumulator springs have a larger coil diameter and are generally shorter than the N-D accumulator springs. Springs go in the case first then are followed by the piston. c. See ground strap bolt location (Figure 2) and refer to chart (Figure 3) for connector color and wire color identification as the internal wire harness connectors can be incorrectly installed. d. Verify the five seals are installed in the mating surface for the secondary valve body. Torque the 3 bolts (Figure 2). Secondary Valve Body NOTE: The green circle is the location for the ground strap from the wiring harness. Ground Strap Bolt Location Torque all bolts to 80 in-lb. Figure 1 1-2 Accumulator b. Install the 13 valve body-to-case bolts in the noted locations (Figure 2). Torque them in the sequence shown, this can help prevent valve bind. 13 6 5 1. Verify Case a. Verify two rubber seals are installed on the top of the valve body. Verify accumulator springs and pistons are installed into case correctly (Figure 1). Install valve body onto transmission case while indexing the manual valve link into the manual linkage. PCB PWM SSF 2. Fluid Fill and Road Test a. Fill the transmission to factory spec with OE compatible ATF. b. Let engine run to help warm transmission fluid to 185°. = Bolts ©2018 Sonnax Transmission Company, Inc. • A Marmon / Berkshire Hathaway Company 866-243-8829 • 856-848-0908 • F: 856-848-1080 • www.sonnax.com F025_TechInstall 06-27-18 Page 1 R E M ANUFAC T UR E D VA LVE BO DIES Te c h & I n s t a l l T i p s FNR5, FN5A-EL F025 Solenoid Resistance Chart & Wire Harness Information 2. Fluid Fill & Road Test (continued) c. I nstall capable scan tool to reset transmission adaptives by resetting "Keep Alive Memory". d. R oad test vehicle performing 10-15 upshift and downshift cycles thru all five speeds. b. It is designed to eliminate many pressure, shift, and converter related complaints, but will not correct complaints that stem from other areas of the transmission. c. Following are common areas of failure or root causes for symptoms that could be attributed to valve body issues that should also be examined or addressed during your transmission build. In addition (Figures 4 & 5) for air test locations to verify internal integrity, and a component application chart for troubleshooting driveability issues. 11 NOTE: Downshift clunks can be common during the relearn. This condition will typically resolve itself within the 10-15 shift cycles. 3. Bonus Diagnostic Tech a. This Sonnax remanufactured valve body has been thru a rigorous inspection and rebuild process, and then put thru a comprehensive functional hydraulic and electronic test to ensure it meets OE performance and quality. Figure 3 Transaxle Main Case Connector Transaxele Secondary Case Connector Terminals Ohms Resistance Harness Common Wire at 20o C (70o F) Connector Color Color(s) Solenoid Main Valve Body 6 & Gnd. Shift Solenoid "D" (PWM) 8 & Gnd. Shift Solenoid "E" (PWM) 3 & Gnd. Shift Solenoid "A" (On-Off) 9 & Gnd. Shift Solenoid "B" (On-Off) 1 & Gnd. Shift Solenoid "C" (PWM) 2&7 PC A Solenoid (PWM) Secondary Valve Body 10 & Gnd. Shift Solenoid "F" (On-Off) 11 & Gnd. PC B Solenoid (PWM) 10.9 – 26.2 Clear White 10.9 – 26.2 1.0 – 4.2 1.0 – 4.2 1.0 – 4.2 2.4 – 7.3 Black White Blue Green Black Red Blue/Green Blue/Brown Black/Green Orange/Blue 10.9 – 26.2 1.0 – 4.2 Black White Black Blue/Green NOTE: When ohm testing solenoids, ground meter to valve body or case. Forward Clutch Low & Reverse Clutch Figure 4 4. Common Failure Areas a. Forward engagement problems and 4-3 flares and torque converter slip codes can be attributed to worn stator bushings. Bushings should be checked and replaced. Servo Release b. A 2-3 flare can be attributed to wear in the case between the servo pin and the bore. In addition the Direct clutch and the sealing ring tower in the rear of the case can cause the same issue. c. A 1-3 shift can be caused by installing the solenoid connectors backwards. Reverse Clutch Direct Clutch Servo Apply FNR5 Application Chart Gear Range Park Reverse Neutral D-1st Gear D-2nd Gear D-3rd Gear D-4th Gear D-5th Gear Forward Clutch Figure 5 2-4 Brake 3-4 Clutch Reverse Clutch Low/Rev Clutch ON ON Low One Way Clutch Direct Clutch 5th Reduction Brake & OWC ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ©2018 Sonnax Transmission Company, Inc. • A Marmon / Berkshire Hathaway Company 866-243-8829 • 856-848-0908 • F: 856-848-1080 • www.sonnax.com ON ON ON F025_TechInstall 06-27-18 Page 2
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