Here's what you need to know:
* No Adjustment: There's no screw or mechanism to adjust the tension. The tensioner's job is to maintain the correct belt tension automatically.
* Checking for Wear: The main way to check the tensioner is to visually inspect it. Look for:
* Leaks: Oil leaks from the tensioner are a major problem and indicate it needs replacement.
* Damage: Check for cracks, significant wear, or damage to the spring or piston.
* Free Movement: Gently try to push and pull on the tensioner arm. There should be a small amount of movement (play), but it shouldn't be excessively loose or stiff. Excessive play points to a worn-out tensioner. However, this is best checked *after* removing the timing belt and *before* installing a new one (since belt tension masks this play normally).
* Replacement: If you suspect the tensioner is worn or leaking, the only solution is to replace it with a new one. This is a crucial part of a timing belt replacement, and skipping this is risky.
Timing Belt Replacement Procedure (involves checking the tensioner):
Replacing the timing belt on a Probe GT is a more involved process than simply adjusting a tensioner. It requires specialized tools, such as a timing belt alignment tool (to correctly align the crankshaft and camshafts). Improper alignment can cause serious engine damage.
The steps generally involve:
1. Consult a Repair Manual: Get a factory service manual or a reputable repair manual specific to your 1992 Ford Probe GT. These manuals provide detailed instructions, torque specifications, and diagrams.
2. Safety First: Disconnect the negative battery cable before starting any work.
3. Remove Related Components: This includes various covers, pulleys, and possibly other components to access the timing belt. The order and methods are detailed in your repair manual.
4. Inspect the Tensioner: *After* removing the old timing belt, inspect the tensioner as described above.
5. Replace the Timing Belt and Tensioner (if necessary): Install the new timing belt and tensioner according to the manual's instructions. It's usually a process of carefully aligning the marks, using the alignment tool, and then allowing the tensioner to automatically set the correct tension.
6. Reassembly: Reinstall all the removed components.
In short: You don't adjust the tensioner on this engine; you replace it if it's faulty. Attempting a timing belt replacement without a proper repair manual is strongly discouraged due to the potential for catastrophic engine damage. If you're not comfortable with this type of work, take your vehicle to a qualified mechanic.
