January 29, 2020
Bushwhacked! Keys to Avoiding Preventable Bushing Problems
Brian Wing
Symptoms:
- Bushing walks out
- 情况下损坏
- Output shaft & case damage
- Metal contamination
Cause:
Lack of flange or stop surface on the case bushing.Correction:
Sonnax no walk-out case bushings are flanged to prevent movement in either direction.400,4 180-E,4 185-E
Case Bushing
Part No.34006-SP
View Instructions
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The OE case bushing in vehicles with a GM THM-400, 4L80-E and 4L85-E transmissions tends to walk out of the housing bore. This leaves the output shaft unsupported, ruins the governor gear and can cause case damage. The no-walk flange feature of the Sonnax case bushing 34006-SP is specially designed to keep the bushing in the case bore.
- High-quality bronze
- Flange on the transmission case side prevents bushing from walking completely through the bore
- Flange accurately locates and helps retain the selective washer
- Machined oil grooves allow for a supply of lubricating oil to enter the extension housing as well as the transmission case.
The housing bore should not measure more than 2.1285" in diameter for an ideal fit.
- Material: Bronze
- Bushing Style: Precision
- Width: 0.690"
- Shaft Dia.: 2.006"
- Housing Bore: 2.129"
相关Sonnax部分
Required
Recommended
4 180-E,4 185-E
The Sure Cure® KitSC-4L80E
-
Helps cure:
- Burnt converter
- Bushing walks out
- 情况下损坏
- Clutch failure
- Band failure
- Solenoid performance codes
- Broken parts due to excessive line pressure
- Buzzing noise
- Metal contamination
- Output shaft & case damage
- High line pressure
- Uncontrollable line rise
- 2-3 Neutral
- 3-4 Neutral
- No 4th
- 2nd Gear starts
- Wrong gear starts
- Converter shudder
- TCC apply & release concerns
- TCC slip codes