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#90342 09/15/2004 8:00 PM | Joined: May 2004 Posts: 105 'Bolter | | 'Bolter Joined: May 2004 Posts: 105 | I have a 1950 3/4 Chev. I just replaced my sending unit in my tank and the gauge was replaced a few years ago. At full the gauge reads about 7/8 full. Is there a way to adjust the gauge so it reads correctly? | | |
#90343 09/15/2004 10:36 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Take the sending unit out & bend the rod a
little. Howdy neighbor!
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#90344 09/15/2004 10:57 PM | Joined: May 2004 Posts: 105 'Bolter | | 'Bolter Joined: May 2004 Posts: 105 | I'm positive the sending unit is fine. It reads between 0 and 32 ohms depending on how full the tank is. When full, the gauge should read around 30 ohms. The sending unit, when the tank is full, reads 32 ohms. The gauge, not the sending unit, is at fault. | | |
#90345 09/15/2004 11:42 PM | Joined: Jun 2004 Posts: 336 Member | | Member Joined: Jun 2004 Posts: 336 | On the older gauges (like in my 54) there is a triangular piece (counter balance) at the base of the needle - this can be adjusted relative to the needle to get the guage reading correctly if your needle isn't bent.
The coils in the gauge act on this counter balance. The adjustment is easy. Hold the counterbalance steady and push on the base of the needle with a small screwdriver.
Gord
1954 1/2 ton 235 4 speed
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#90346 09/16/2004 3:31 AM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | You should check what your gauge reads with the sending unit disconnected at the dash end. If it reads full, then you have a partial short to ground in the wire going to the sending unit. | | |
#90347 09/16/2004 1:57 PM | Joined: May 2004 Posts: 105 'Bolter | | 'Bolter Joined: May 2004 Posts: 105 | I had issues with the sending unit because it wasn't grounded. The original wasn't so I figured this wouldn't need to be either. Now that I've grounded it, the gauge works MUCH better. I'll try the adjustment and see if it works. | | |
#90348 09/16/2004 6:41 PM | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | I put the usual 6v gauge designed for behind the seat tanks in the underbed tank of my '48. The arm was too long and could not swing far enough down when the tank was empty. So I bent it up. It now doesn't read full when it is.
What I should have done was shorten the arm (and not bend it) so it could hang further down when it was empty but would still float level when it was full.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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