The document discusses diagnosing and repairing a defective transmission valve. It describes the transmission valve as the "brain" that controls shifts by directing fluid through passages. It lists potential causes of defects like metal debris, improper lubrication from a weak pump, and worn fluid past 30,000 miles. The repair process involves buying a new valve, jacking up the car, removing the faulty valve, replacing it with the new one, and removing the jack.

1. Diagnose & repair a
defective
transmission valve
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2. About Transmission Valve
Brain of the transmission.
Controls the transmission shifts.
Directs the fluid into passages to assist in
the shifting.
Enables the transmission to work properly.
Avoid damaging the entire transmission.

3. defective Types in Transmission Valve
Metal Debris
Cause scratches on the fluid Passage
Cause the O-rings to fail
Causes a transmission fluid leak.
Blocks fluid passages

4. Improper Lubrication
Weak transmission pump can cause improper lubrication.
Cause metal to metal contact.
Cause Unnecessary wear.
Cause gears to stick or fail.
Lead to Overheating.

5. Worn Fluid
Causes the lubrication to lose its viscosity.
Decreases the level of protection the transmission fluid passes
through.
Prevent by changing the fluid approximately after 30,000 miles.

6. Replace Transmission Valve
Requirements
New Transmission Valve
Hydraulic floor jack
Jack Stands
Set of Wrenches

7. Process
Buy New Transmission valve
Place the vehicle on the Hydraulic floor jack & jack stands
Remove the vacuum hose
Remove the faulty valve
Replace the new valve
Replace the Vacuum hose
Remove the jack stands