Throttle Control Unit Linkage
- Disconnect both throttle rods, accelerator cable, and negative battery cable. With suitable tool (A.4.0121), attached to clamp studs, adjust idle stop screw until ball joint just touches reference plane of tool and set lock nut.
- Adjust full throttle stop screw in same manner. Remove tool and replace throttle cable. Check that clearance between accelerator arm (see illustration) and limit bolt is 0.040 - 0.060" with pedal at rest. Adjust limit bolt if necessary.
- Depress accelerator to floor and check that clearance between relay crank lug and full throttle stop screw is 0.080". Adjust pedal stop on floor if necessary.
- Reconnect relay crank-to-throttle rod and adjust length so throttles are just closed when relay crank is resting on idle limit stop. "Just Closed" can be verified by opening and closing throttles by hand (very slowly). Throttle plates will be felt touching their bores as they close. When relay crank is opened slightly and allowed to close under its own spring pressure there will be a click as the crank hits the limit stop.
- Reconnect crank-to-control unit rod, battery cable, and start engine, warming it to 170°F. Check that clearance between control unit arm and its reference screw is 0.012 - 0.024" (as close to 0.019" as possible). Adjust length of rod as required. Twisting rod ends to 30° off a common plane is permitted to obtain desired clearance.NOTE: Never tamper with sealed reference screw on control unit.