September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- Harsh Reverse
- Delayed engagement
- High line pressure
- Low line pressure
- No line rise
- Converter concerns
Cause:
Constant oscillation of the main regulator valve and/or the boost regulator valve in their bores creates wear which can result in oil pressure loss or cross leaks and valve malfunction.Correction:
Sonnax now offers an oversized valve kit for both the main regulator valve and boost regulator valve kit to restore proper clearance to the bore and prevent oil loss.Warning:
Tool kit F-119940-TL73 is no longer in production but may be available from distributor inventory.
096, 097, 098
Oversized Boost Regulator Valve Kit
Part No. 119940-07K
-
Tooling:
- F-119940-TL7
- VB-FIX
View Instructions Find a Distributor
In VW/Audi 096, 097 and 098 units, wear at the inboard end of the boost regulator bore can reduce the ability of EPC/TV pressure to stroke this valve open. Full boost exiting this valve combines forces with the main regulator spring, increasing line pressure. Sonnax oversized boost regulator valve kit 119940-07K allows the bore to be refurbished and restore proper pressure control.
- Hardcoat anodized aluminum valves combat premature wear
- O-Ringed end plug positively seals the bore and prevents regulated boost line pressure from exhausting
- A replacement ratcheting end plug is included as the OE one often breaks
- Valve
- Ratcheting End Plug
