Product Information
Throttle
Linkage Reverse Lever.
This reverse lever forms part of the
mechanical accelerator linkage system used on early Porsche 911 models. It
transfers movement from the accelerator linkage through the bell-crank
arrangement, allowing movement of the accelerator pedal to be transmitted
smoothly towards the engine throttle mechanism.
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L
RS LWB (F)
Diagram Ref No 14
Wear in the lever, pivot or associated bushes
can introduce excessive free play into the accelerator system, resulting in
reduced throttle response, inconsistent pedal movement or difficulty achieving
full throttle.
Manufactured as an OE Match replacement, this
component is ideal for restoring worn or incomplete throttle linkage systems
while maintaining the original operating principle and installation
arrangement.
What the throttle linkage reverse lever does
Early Porsche 911 models use a predominantly
mechanical accelerator linkage rather than the electronic throttle systems
found on modern cars.
The reverse lever acts as a pivot within this
linkage. As the accelerator pedal is pressed, the linkage moves the lever,
which changes the direction of movement and transfers it onwards through the
accelerator rods towards the engine.
The lever therefore plays an important role in
maintaining:
• Smooth accelerator pedal operation
• Correct throttle linkage movement
• Consistent throttle response
• Correct mechanical linkage geometry
• Full opening and closing of the throttle system
Why does the throttle linkage reverse lever
wear or fail?
The reverse lever operates every time the
accelerator pedal is pressed and is therefore subject to continuous movement
throughout the life of the vehicle.
Common causes of deterioration include:
• Wear around the pivot point
• Worn or deteriorated linkage bushes
• Corrosion caused by age and moisture
• Lack of lubrication around moving components
• Enlarged mounting or pivot holes caused by prolonged use
• Bent or damaged linkage components
• Previous incorrect adjustment of the accelerator linkage
Because these cars are now several decades
old, wear may also have developed gradually and may not immediately be obvious
to the driver.
When should the reverse lever be replaced?
Replacement should be considered if excessive
movement, corrosion, distortion or wear is found during inspection of the
accelerator linkage.
Typical symptoms can include:
• Excessive accelerator pedal free play
• Sluggish initial throttle response
• Uneven or notchy accelerator movement
• Accelerator pedal movement without corresponding throttle movement
• Difficulty achieving full throttle
• Excessive movement at the linkage pivot
• Linkage that does not return smoothly
• Visible wear or corrosion around the lever
A worn reverse lever can also place additional
movement and load on surrounding linkage bushes and joints.
Checks and diagnosis
If your early Porsche 911 has excessive
accelerator pedal play or inconsistent throttle response, inspect the complete
mechanical linkage rather than replacing individual components without checking
the surrounding system.
Check:
• Reverse lever for excessive pivot movement
• Accelerator linkage bushes for wear or deterioration
• Ball sockets and linkage joints
• Linkage rods for bending or damage
• Mounting points and washers
• Accelerator pedal mechanism
• Correct linkage adjustment
• Smooth movement from idle to full throttle
Any badly worn bushes should normally be
replaced at the same time to help restore the correct linkage geometry and
minimise free play.
Porsche
911 1969–71 Accelerator and Throttle Linkage Parts
The mechanical accelerator linkage used on
early Porsche 911 models relies on a series of rods, bushes, ball sockets and
pivot levers to transfer accelerator pedal movement from the pedal assembly to
the engine throttle mechanism.
The Porsche 911 throttle linkage reverse lever
90142302705 is an important part of this system, changing the direction of
linkage movement while helping maintain the correct relationship between
accelerator pedal travel and throttle opening.
Age-related wear in early Porsche accelerator
linkage components can introduce free play into the system. Replacing worn
linkage levers, bushes and joints can significantly improve accelerator feel
and help return the throttle system to its intended operating condition.
For owners restoring or maintaining a Porsche
911 from 1969, 1970 or 1971, checking the complete accelerator linkage is
particularly worthwhile where the pedal feels loose, throttle response is
delayed or full throttle cannot be achieved.
Related reference numbersRelated, superseded, cross reference or alternative numbers for comparison.
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