Symptoms:
- Low line rise
- Poor shift timing
Cause:
The regulator boost valve wears the inside diameter of the boost sleeve.Correction:
Sonnax drop-in replacement pressure regulator boost sleeve is tightly toleranced to restore proper line rise control.Warning:
On RE4F02A units, be sure to compare I.D., O.D., depth, overall length and feed hole locations.
RE4F02A, RL4F02A
Pressure Regulator Boost Sleeve
Part No. 93990
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Vehicles with Jatco/Nissan RE4F02A or RL4F02A transmissions often have problems with poor shift timing and poor line rise. This can be caused by the reciprocating pressure regulator boost valve wearing the inside diameter of the boost sleeve. As this wear increases, pilot/boost pressure, which enters the sleeve, leaks past the valve and exhausts, resulting in poor line rise. Sonnax pressure regulator boost sleeve 93990 eliminates the above problems.
- Sleeve has been manufactured from high-quality aluminum designed to resist wear
- Sleeve has been closely toleranced to obtain the original minimal clearance with the boost valve
- Drop-in Zip Valve™ parts install quickly and easily
You need this if...
