Massive Pentosin Leak - FIXED

SJ syljay at
Mon Dec 11 15:14:38 EST 2006

I followed advice from several listers -- cut off end of hose and re-attach.

The hose is a bitch to remove!
Two heat guns were used to warm up the rubber hose in order to make it more
I had to be careful with the prying so as not to break off the reservoir
nipple. On the 100q, I had to split the hose end for about 1/2" in order to
get it off the nipple.
1/2" of hose end was cut off and re-attached using 2 new hose clamps.

On the 5000q, I added 2 more hose clamps to the existing setup.
The reservoir nipple is long enough to fit two clamps on the hose end behind
the nipple barb.
I added the second hose clamp to fit right over the nipple barb.

So far, so good.
For a leak indicator, I wrapped a folded over paper towel, held in place
with tie wrap, around the connection. No leaks so far.

85 Dodge PU, D-250, 318, auto
85 Audi 4k - - sold but still on the road
88 Audi 5kq
90 Audi 100q

>Original Post

> Patient: 90 100q
> Symptom: Leaking from the reservoir - pump hose connection.
> I lost all the reservoir pentosin overnight.
> The temps dropped into the teens. Apparently, the connection at the
> reservoir-hose is no longer supple enough to compensate for temperature
> changes.
> I suspected this area to be leaking Pentosin, but leaking randomly.
> Two weeks ago,  I wrapped the connection with a pleated paper towel,
> with a tie wrap. If there was a leak, the paper towel would be saturated
> green in color. All was well for two weeks until this morning - temps
> overnight dropped to 10 deg F. All the pentosin was on the driveway. The
> paper towel was saturated and green.
> I dont want to tighten the hose clamp more than it is. I'm afraid of
> crushing or breaking off the reservoir plastic nipple.
> To fix the problem temporarily, I want to replace the hose end with new
> material.
> Cut off about a foot from the end of the hose.
> Add a copper or brass tubing to inside of the old hose.
> Slip new hose over brass tubing.
> Secure tubing with hose clamps(dont have to worry about overtightening).
> Use the new, supple hose section on reservoir nipple.
> Anyone know what the Pump to Reservoir Hose inside diameter is?
> SJ
> 85 Dodge PU, D-250, 318, auto
> 85 Audi 4k - - sold but still on the road
> 88 Audi 5kq
> 90 Audi 100q

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