September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- Poor shift quality
- Flare shifts
- Harsh shifts
- Erratic line pressure
- Slips in Forward & Reverse
- Delayed Reverse
- No Reverse
- TCC slip
Cause:
Excessive valve and bore clearance allows critical line pressure to exhaust causing high or low pressure depending on the location of the wear.Correction:
Sonnax oversized pressure regulator valve kit restores the correct valve/bore clearances and line pressure control as well as prevent future wear in this area.Warning:
There are some small diameter and length differences that can cause fit and pressure issues if mismatched into the wrong application. It is recommended to measure the locations shown here to verify that the correct OE or replacement part is fit into the appropriate application during rebuild.
| Application | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| ZF6 Gen. 1, 6R60, 6R75, 6R80 ('09–'14) | .645" | .629" Dia. | .495" Dia. | .568" | .378" | .629" Dia. | .550" Dia. |
| ZF6 Gen. 1 w/ 053 Separator Plate | .725" | .657" Dia. | .511" Dia. | .649" | .378" | .657" Dia. | .586" Dia. |
| ZF6 Gen. 2 | .804" | .629" Dia. | .511" Dia. | .725" | .418" | .629" Dia. | .562" Dia. |
| 6R80 ('15-Later), 6R100 | .645" | .629" Dia. | .511" Dia. | .568" | .378" | .629" Dia. | .550" Dia. |
6R60, 6R75, 6R80 (2009–2014), ZF6HP19, ZF6HP26, ZF6HP32
Oversized Pressure Regulator Valve Kit
Part No. 95740-01K
Fits 6R80 '09-'14. Cannot be used in units that have a 053 separator plate.
OE valve name: SYS.DR-V
-
Tooling:
- F-95740-TL
- VB-FIX
You need this if... View Instructions Find a Distributor
Wear is commonly found at different areas in ZF6HP19/26/32 (Gen. 1) and Ford 6R60/6R80 pressure regulator bores. Wear at the sleeve end causes high line pressure leading to broken drums, pistons or other parts, as well as restricted converter/lubrication flow. Wear at the spring end of the bore allows low line pressure and lube/TC fluid to exhaust leading to a burned converter clutch and premature bushing failure. The Sonnax oversized pressure regulator valve kit 95740-01K restores valve-to-bore or sleeve clearances so the pressure regulator valve can maintain correct pressures.
- Hardcoat anodized aluminum valve combats premature wear
- Alloy aluminum sleeve is significantly more wear-resistant than the OE sleeve
- Salvages valve body castings
Kit is NOT compatible with ZF6HP19/26/32 (Gen.1) units with an 053 separator plate code or ZF6HP21/28/34 (Gen.2) units. To differentiate between Gen. 1 and Gen. 2 valve bodies, see ZF Identification Guide.
- Valve
- Sleeve
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
Ford 6R80, 6R100 Valve Body Layout
ZF6HP19/26/32 (Gen. 1) without 053 Separator Plate Valve Body Layout
November 07, 2014
GM Compensator Feed System
Brian Wing
January 14, 2014
ZF6HP19/26/32 (Gen. 1), Ford 6R60, 6R75, '09–'14 6R80 & ZF6HP21/28/34 (Gen. 2) Identification Guide
March 23, 2016
Six Ways from Sunday: Diagnosing ZF6 & Ford 6R60/80 TC-Related Drivability Concerns
Bob Warnke
January 21, 2013
ZF6HP19/26/32 (Gen. 1)/Ford 6R60, 6R80 Vacuum Test Guide
October 08, 2020
How to Identify Similar Ford & ZF6 Transmissions — Four Features to Check Before You Begin a Rebuild
Maura Stafford
August 15, 2022
Troubleshooting Ford 6R80 & 6R140 Timing-Related Shift Issues
Jim Dial
September 16, 2022
Troubleshooting Ford 6R80 & 6R140 2-3 Shift Quality Issues
Jim Dial
You need this if...
A vacuum test at the inner port fails to hold the recommended minimum 18 in-hg, or if visual wear is detected at the inboard valve bores. If the inner port holds vacuum, but the outer port fails to hold the recommended minimum, use either this oversized pressure regulator valve kit 95740-01K or direct replacement pressure regulator sleeve [95740-03].
Related Sonnax Parts
Required
Recommended
6R100, 6R60, 6R75, 6R80 (2009–2014), 6R80 (2015-Later), ZF6HP19, ZF6HP26, ZF6HP32
Tool Kit F-95740-TL
Required
Recommended
ZF6HP19, ZF6HP26, ZF6HP32
Oversized Pressure Regulator Valve Kit 95740-78K
Fits units with 053 separator plate only.
OE valve name: SYS.DR-V
-
Helps cure:
- Broken parts due to excessive line pressure
- Erratic line pressure
- Harsh shifts
- High line pressure
- Restricted converter/lube flow
- Soft shifts
- Flare shifts
- TCC slip
Required
Recommended
