FB/EK Speedometer

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rosco
Posts: 2569
Joined: Wed Feb 04, 2004 8:34 pm
State: VIC
Location: Melbourne

FB/EK Speedometer

Post by rosco »

Speedometer

The speedometer head, located in the centre of the instrument carrier panel, has a magnetic "Vivid Arc" type speed indicator and a gear driven odometer.
The odometer incorporates six figure wheels, the right hand wheel indicating in one-tenths of a mile.
The speedometer head is driven by a flexible cable, which is enclosed in a flexible casing, and driven by worm gears in the rear of the transmission.

Test of Speedometer Head

Most cable breakages are caused by tightness in the speedometer head or a kink in the cable casing.
Tightness or binding in the head may also cause wavering of the pointer.
The speedometer head may be tested for tightness or binding as follows:-

1. Obtain a short piece of speedometer cable ( 3" to 4" long) with a tip to fit the speedometer head.
A piece of broken cable may be used.
Detach and bring forward the instrument carrier panel assembly (instrument cluster panel).

2. With the speedometer head in place, but with the cable and casing disconnected, insert the test cable in the speedometer socket.

3. Spin the test cable between thumb and finger three or four turns.
If the test cable shows any tendency to bind at all, there is trouble in the head and it should be removed for repairs by an authorised Speedometer Service Station.
If the test cable turns freely, the head is sound: look for sharp bends in the cable casing.
A casing radius of not less than 5" must be maintained at all bends.

Speedometer Cable

The Speedometer cable is lubricated at the time of assembly and should not require further lubrication under normal conditions for 25,000 miles.

Inspection of Cable

If the speedometer cable is noisy, or the speedometer speed indicator wavers, the cable should be inspected for kinks or lack of lubrication.

1. Disconnect the speedometer cable casing at the speedometer head, then pull the cable out of the upper end of the casing.

2. Inspect the cable for breaks or worn spots and kinks which indicate lack of lubrication or sharp bends in the casing.
To check cables for kinks, hold one end vertically in each hand and slowly turn the cable - if the cable is kinked, the "loop" will "flop".
Replace the cable if kinked, and also the casing if it is distorted.

If necessary, lubricate the cable as outlined in lubrication section.

Insert the cable into the casing from the upper end, then connect the casing to the speedometer head, making sure that the cable tip seats correctly in the speedometer socket.[/b]
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