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Sonnax 77917-07 4L60E oversized pressure regulator valve sonnax REQ. TOOL
Sonnax 77917-07 4L60E oversized pressure regulator valve sonnax REQ. TOOL

Sonnax 77917-07 4L60E oversized pressure regulator valve sonnax REQ. TOOL

$ 10.37

Availability: 61 in stock
  • Returns Accepted: Returns Accepted
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Brand: sonnax
  • Warranty: Yes
  • Return shipping will be paid by: Seller
  • Condition: New
  • Manufacturer Part Number: 77917-07
  • Item must be returned within: 30 Days

    Description

    4L60-E, 4L65-E, 4L70-E
    Oversized Pressure Regulator Valve
    Part No.
    77917-07
    Tooling:
    77917-TL
    77917-TLC
    A worn OE pressure regulator valve can be detected in two ways. The first is a dynamometer test that reveals low line pressure during boost conditions (look for 50-100 psi less than specified in Reverse). The second is vehicle symptoms such as clutch slippage, reverse chatter and 3-4 clutch failure. Any of the above problems indicate bore wear that should be addressed.
    To address pressure regulator leakage in GM 4L60-E, 4L65-E and 4L70-E pump bodies, Sonnax offers oversized pressure regulator valve 77917-07. The Sonnax valve permits pump covers to be restored to OE specifications by correcting for wear and leakage at the pressure regulator valve.
    Refurbish the pump cover by reaming the bore and installing an oversized pressure regulator valve
    The pressure regulator valve helps restore control over the pressure regulating circuit by eliminating leakage
    Note
    Boost valves should be checked for leakage at the same time the pressure regulator valve is being replaced.When oversizing the pressure regulator valve, it is recommended to move up one boost ratio.