Speedometer Adapter

[John Mackie]

Trucks with 2 speed rear axles used these adaptors. when they had an electric shift an electric soleniod was incorperated in the adapter. earlier trucks used vacuun shift and had a small vacuum diaphragm mounted on the unit. earlier still the axle was shifted by rods and cables to a lever . that came up through the floor beside the gearbox. the cable concirned would have run from the back of the spedo under the floor to the shift lever.

Also Ausie made Ford trucks with vacuum shifted 2 speed axles had the handbrake moved to the rear wheels as vacuum shifted axles were known to neutralise when parked as the vacuum leaked away.

John