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12-13-2011, 08:14 PM | #1 |
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Join Date: Sep 2011
Location: San Jose, California
Posts: 784
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th350 speedo leak
My speedo cable adapter is leaking at the trans, but I don't see the adapter pictured in the manual. I don't want to open it up without knowing what's in there. Any trick to it, or just pull it out and match the o-rings?
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12-13-2011, 08:22 PM | #2 |
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Join Date: Sep 2010
Location: Richmond, Va
Posts: 573
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Re: th350 speedo leak
just pull it apart. the problem will likely reveal itself
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12-14-2011, 12:39 AM | #3 |
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Location: Redmond, OR
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Re: th350 speedo leak
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68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress |
12-14-2011, 10:41 PM | #4 |
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Location: St. Paul MN.
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Re: th350 speedo leak
GM# 345215 this is the part you may be looking for
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Fuzzy |
12-15-2011, 12:57 AM | #5 |
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Join Date: Sep 2011
Location: San Jose, California
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Re: th350 speedo leak
Thanks, hay. Also, I forgot to ask: I don't need to drain off the trans fluid - right?
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12-15-2011, 11:58 AM | #6 |
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Join Date: Jan 2008
Location: Huntersville, NC
Posts: 8,298
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Re: th350 speedo leak
domeier.....when I changed mine, I jacked the back of the truck up (put blocks in front of the front wheels)...some fluid will leak out, but jacking it up may limit it....
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Geoff with a G 1968 Chevy C10 SWB The Mistress 1972 Custom Deluxe C20 Suburban A Suburban Named Isabella 1966 Ford Mustang Mama's High School Graduation Present |
12-15-2011, 05:47 PM | #7 |
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Join Date: Jan 2011
Location: Chattanooga, TN
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Re: th350 speedo leak
If it is leaking between the bullet and the case, an o-ring may fix it. If it is leaking between the speedo driven gear and bullet and coming out around the cable, then you need a new bullet and driven gear. The steel bullets are much better than the aluminum ones. Very common problem with aluminum ones.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
12-15-2011, 06:03 PM | #8 |
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Join Date: Sep 2011
Location: San Jose, California
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Re: th350 speedo leak
It's raining today, so I ain't getting under no truck. Appreciate all the replies.
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