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BN1 - Tach Seal

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mjobrien

mjobrien

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Just an update....

I installed a tach drive oil seal, part number ENG789 from DWM today with great results. The major leak on the left side is now gone and all is OK on that side.

Thought others might like to know they sell the seal for about $7. Well worth the price to cut that leak off!


Michael
55 BN1.
 
Hi Michael,
Failure of that seal can also lead to excess oil travelling up the cable to the instrument. That happened to me once, and wouldn't you know it, I was wearing white trousers at the time!!
Another thing, I replaced the seal again recently and noticed that there was some wear on the shaft that runs in the seal. So I should really replace that too to completely cure that leak
 
Pan,


Thanks, I did look at the shaft and it seemed to have some light wear but so far the new seal has held up..... White pants and a Healey now that's Optimism!


Michael.
 
I didn't know that my tach seal was leaking until the tach needle started sticking. No drips from the cable. Took the tach apart & the inside was full of oil. Very carefully washed the oil out of the spiral spring, replaced the lower seal, & everything working fine since.

The split sleeve seal retainer was a bear to remove & replace.
D
 
The seal on my tach chose to fail when I was about a day out of LA on the way back home. I drove for two days with hot oil dripping onto my right leg (about 1/2 quart a day) before I got to Albuquerque New Mexico and had Dave Porter of then-Taos Garage Annex fix me up. All part of the thrill!
 
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