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Topic: 55 V-8 oil sending unit

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Allen Kahl

55 V-8 oil sending unit

Home away from home

Is the 55 V-8 oil pressure sending unit, mechanical or electrical????

Posted on: 2013/5/12 20:25

Al

1955 Patrician

HH56

Re: 55 V-8 oil sending unit

Forum Ambassador

Electrical output. 10 ohms high or max pressure - 80 ohms no pressure. The same as the other gauge senders output range. A mechanical diaphragm internal to the sender controls the resistance for the output.

Posted on: 2013/5/12 20:33

Howard

Allen Kahl

Re: 55 V-8 oil sending unit

Home away from home

Where is the sending unit located.

Posted on: 2013/5/13 10:20

Al

1955 Patrician

Cli55er

Re: 55 V-8 oil sending unit

Forum Ambassador

back right, near the dizzy. its a big black plastic thing with a wire going to it.

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Posted on: 2013/5/13 10:24

1937 Packard 138-CD Deluxe Touring Limousine
Maroon/Black 1090-1021
[url=https://packardinfo.com/xoops/html/modules/registry/View.php?ID=232]1955 Packard

HH56

Re: 55 V-8 oil sending unit

Forum Ambassador

Quote:

HH56 wrote:
Electrical output. 10 ohms high or max pressure - 80 ohms no pressure. The same as the other gauge senders output range. A mechanical diaphragm internal to the sender controls the resistance for the output.

I made a boo boo by not asking what model car. The sender for senior cars is as described above. For Clippers it is still electrical but just a switch which is closed until oil pressure builds and then opens to extinguish the light at a set point. Different range senders are available so where it operates depends on sender specs.

Posted on: 2013/5/13 11:53

Howard

Allen Kahl

Re: 55 V-8 oil sending unit

Home away from home

Can they go bad from just sitting and if so is there a modern replacement.

Posted on: 2013/5/13 12:57

Al

1955 Patrician

Owen_Dyneto

Re: 55 V-8 oil sending unit

Forum Ambassador

For either style they normally don't go back from just sitting, and NAPA has a replacement for the junior idiot light sender, not sure of the senior sender.

Posted on: 2013/5/13 13:00

Allen Kahl

Re: 55 V-8 oil sending unit

Home away from home

No need for further inquiry on that one. I went out and checked and sure enough during the course of doing the carb I must have dislodged the wire. There is another sending unit type of thing on the back of the drivers side head, is that the temp gauge sending unit????

Posted on: 2013/5/13 13:05

Al

1955 Patrician

HH56

Re: 55 V-8 oil sending unit

Forum Ambassador

There is a modern replacement for the senior units and is available at Napa. Jim L has installed one in his 55 and verified it reads correctly. As O_D says there are also replacements for the Clipper switch. Depends on which you need.

The sender on the rear of head is the temp sender.

Posted on: 2013/5/13 13:12

Howard