Trimatic Speedo Drive
From Holdenpaedia
Originally submitted by T:
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[edit] Speedo Drive:
The Speedo Driving and Driven Gears can be changed to match tyre size and differential ratio.
Charts for these are available under Holdenpaedia.
[edit] The Speedo Cable:
Before unbolting and removing the Speedo cable it is imperative to make a large loop out of the cable. Simply unbolting the cable and pulling it out of the casing will put a kink in the cable, especially in Toranas.
The kink will be more than the plastic Speedo Driving and Driven Gears can turn and they will eventually strip. The only fix is to replace both the Driving and Driven Gears as well as the cable.
A kinked Speedo cable is characterised by the Speedo needle in the Speedometer bouncing up and down as the car moves forward.
[edit] The Speedo Driven Gear:
The Speedo Driven Gear is mounted on the end of the Speedo cable.
[edit] The Speedo Driving Gear:
The Speedo Driving Gear is mounted on the tailshaft of the unit. Removal of the rear housing of the Trimatic is necessary to access, remove and replace it.
