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
45RFE, 545RFE,
65RFE, 66RFE,
68RFE Universal
Remanufactured
Valve Body '99-Later
Part Nos.
CHR145
CHR145 No Solenoid Pack No Solenoid Pack
CHR146 With Solenoid Pack
NOTE: This uniquely designed
universal remanufactured valve CHR146
body will fit listed applications
'99-later, whether replacing With Solenoid Pack
a 5 or 7 checkball original valve body.
Valve Body Installation Tips
68RFE Main Valve Body Figure 1
1. Remove the gasket protector plate (Figure 1), and return with the core.
2. Install solenoid pack onto valve body front plate and secure with 15-25 torx bolts,
torque to 53 in-lb. Verify three valve body-to-case seals are installed on top of the
valve body (Figure 1). Gasket
Protect
NOTE: This valve body will work with any solenoid pack, black connector, white Plate
connector or grey connector. If you are installing the black connector pack you will
need to install the striker plate from your valve body. Sonnax recommends the white
connector solenoid pack as it is universal. 2nd OD
3. Verify accumulator spring combination. If this valve body is going to be installed
Orange Inner White/Pink
into a 45RFE or 545RFE application, install the valve body as is. If this valve
body is going to be installed into a 68RFE, 65RFE or 66RFE application, remove • Verify 3 valve body case seals are installed.
accumulator cover plate, then remove OE inner and outer springs out of the 2nd • Install orange inner & white/pink accumulator springs.
accumulator and install Sonnax orange inner and plain outer springs. Remove
OD accumulator spring and install Sonnax white/pink spring (Figure 2). Install six (8mm) head bolts Figure 3
Reinstall the cover plate and and torque to 105 in-lb.
install all of the retaining screws Figure 2 1
and torque to 40 in-lb (Figure 1).
2
4. Install complete valve body
and solenoid assembly onto the
transmission case and install six 3
(8mm) valve body-to-case head
bolts and torque to 105 in-lb
4
(Figure 3).
6
5. Install 15 oil pan bolts and
Sonnax springs can come in various
torque to 105 in-lb (Figure 4). different shades of pink and/or white.
5
©2020 Sonnax Transmission Company, Inc. • A Marmon / Berkshire Hathaway Company CHR145_RVB TechInstallTips 03-04-20
866-243-8829 • 856-848-0908 • F: 856-848-1080 • www.sonnax.com Page 1
R E M ANUFAC T UR E D VA LVE BO DIES
45RFE, 545RFE, 65RFE, 66RFE, 68RFE UNIVERSAL CHR145, CHR146 Te c h & I n s t a l l T i p s
Fluid Fill and Road Test Install 15 torque bolts Figure 4 Transmission Case Connector Figure 5
1. Fill the transmission to factory spec with and torque to 52 in-lb.
OE compatible ATF.
1 2
2. Let engine run to help warm transmission 3
fluid to 185°. 5 6 1 3
4
3. Install capable scan tool to initiate quick learn. 7
8
9
4 7
4. Road test vehicle performing 10-15 upshift 10 11
8 12
and downshift cycles through all four, five 13 16
12 13 14 15
or six speeds. 17 20
NOTE: Downshift clunks, a slight bind on the 3-4 upshift,
21 23
and a 2-3 flare can be common during the relearn.
This condition will typically resolve itself within the
10-15 shift cycles.
Solenoid Resistance Chart Figure 6
Bonus Diagnostic Tech
Solenoid Connector Pins Resistance
This Sonnax remanufactured valve body has been through a
rigorous inspection and rebuild process, and then put through a LR/TCC 10 & 2 1.3 Ω
comprehensive functional hydraulic and electronic test to ensure Overdrive 10 & 7 1.3 Ω
it meets OE performance and quality. It is designed to eliminate Underdrive 10 & 17 1.3 Ω
many pressure, shift, and converter related complaints, but will not 2nd Clutch 10 & 20 1.3 Ω
correct complaints that stem from other areas of the transmission. 4th Clutch 10 & 19 1.3 Ω
The following are common areas of failure or root causes for symp- Multi-Select 10 & 21 1.3 Ω
toms that could be attributed to valve body issues that should also Line Pressure 10 & 12 4.3 Ω
be examined or addressed during your transmission build. TOT Sensor 22 & 23 9.37 Ω
In addition, see solenoid pack terminal layout and ohm test *NOTE: All resistance Ω @ room temperature.
information (Figures 5 & 6). See air test locations to verify internal
Air Test Locations Figure 7
integrity (Figure 7), and component application charts for trouble- 2nd Clutch
shooting driveability issues (Figures 8 & 9).
Reverse
Common Failure Areas Clutch
1. A neutral condition after launch in Drive may be caused by
a Low roller clutch/Low sprag failure. See application charts
(Figures 8 & 9). The Low/Reverse Clutch is applied at a stop in
Underdrive
1st Gear and turns off right after launch. A neutral condition Clutch
will happen if the Low roller/Low Sprag is not holding.
2. Stalling conditions or torque converter clutch engagement
concerns are not valve body related. The components that
control the torque converter are located in the pump. Torque Overdrive
converter limit valve wear out is common and can cause the Clutch
Low Reverse
stalling condition. 4th Clutch Clutch
45RFE, 545RFE Clutch Apply Chart Figure 8 65RFE, 66RFE, 68RFE Clutch Apply Chart Figure 9
Overrun
2nd Clutch
Rev Clutch
Selector
Gear Ratio
4th Clutch
OD Clutch
UD Clutch
Clutch
Clutch
Clutch
Clutch
Clutch
Clutch
Clutch
Low/Rev
Ratio
Overrun
Low/
Selector
Gear
Low
2nd
Rev
Rev
Clutch
Clutch
4th
OD
UD
Low
Position Position
Park On
Park On
Reverse On On 4.44:1
Reverse On On 3.00:1
Neutral On
Neutral On
1st On* On Hold 3.23:1
1st On* On Hold 3.00:1
2nd On On 1.83:1
2nd
OverDrive
On On 1.67:1
3rd
OverDrive
On On 1.41:1
2nd Prime On On 1.50:1 4th On On 1.00:1
3rd On On 1.00:1 5th On On 0.81:1
4th Off On 0.75:1 6th On On 0.62:1
*NOTE: L/R Clutch is on only with the output shaft speed below 150 RPM. *NOTE: L/R Clutch is on only with the output shaft speed below 150 RPM.
©2020 Sonnax Transmission Company, Inc. • A Marmon / Berkshire Hathaway Company CHR145_RVB TechInstallTips 03-04-20
866-243-8829 • 856-848-0908 • F: 856-848-1080 • www.sonnax.com Page 2
