Symptoms:

Jerking on coastdown
Harsh engagement
High engine RPM
No lockup

Cause:

Wear at the inboard lockup control valve spools and bore results in loss of hydraulic control, creating harsh engagement and high engine RPM.

Correction:

Restore proper hydraulic control by refurbishing the bore and installing Sonnax oversized lockup control and plunger valve kit.

Warning:

When installed, the head of the retainer for the secondary pulley/pressure regulator valve train stands proud of the valve body casting. The retainer must be removed prior to mounting the casting on the VB-FIX to allow the casting to sit flat on the fixture. Sonnax recommends removal of the complete secondary pulley/pressure regulator valve train before mounting the casting on the VB-FIX.

JF015E (RE0F11A)

Oversized Lockup Control & Plunger Valve Kit
Part No. 33741F-09K

Also fits Mitsubishi F1CJB

Tooling:

F-33741F-TL9
VB-FIX

You need this if... View Instructions Find a Distributor

In Jatco/Nissan JF015E (RE0F11A) units, the lockup control valve operates under the direct command of the lockup control solenoid routed through a select switching valve and is also influenced via apply and release feedback balance passages. A worn bore, valve spool(s) or plunger valve assembly can cause loss of critical pressure to the sump, lube circuit, or directly into apply or release passages resulting in jerking on coastdown, harsh engagement, and high engine RPM due to no lockup.

Reconditioning the bore and installing Sonnax oversized lockup control and plunger valve kit 33741F-09K restores optimal oil pressure management within the TC clutch apply/release circuits.

Hardcoat anodized aluminum valve combats premature wear
Oversized valve reproduces OE pressure regulator function

Contents

Control Valve
Plunger Valve
Sleeve

Valve Body Layout

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.