January 21, 2013
Symptoms:
- Delayed Reverse
- B2 Clutches burned
- No engine braking in manual low
- Erratic shift timing
Cause:
Wear of the B2 control valve in the aluminum sleeve.Correction:
Sonnax drop-in B2 apply control plunger kit eliminates the loss of B2 pressure.U151E, U151F, U250E
B2 Apply Control Plunger Kit
Part No. 27741-06K
You need this if...
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The B2 brake in Toyota/Lexus U151E, U151F and U250E transmissions is applied in Reverse and manual Low. During manual Low, the B2 apply control plunger valve helps to correctly position the apply control valve to route Low/1st oil pressure through the control valve to apply the brake. If there is excessive wear at the plunger valve sleeve, B2 brake oil is reduced. Sonnax B2 apply control plunger kit 27741-06K eliminates the loss of B2 pressure.
- Drop in replacement, no special tools required
- Plunger sleeve made of wear-resistant aluminum
- Hardcoat anodized aluminum valve and annular grooves combat premature wear
- Drop-in Zip Valve™ parts install quickly and easily
- Sleeve
- Plunger Valve
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.
Toyota/Lexus U151E/F, U250E Valve Body Layout
