On Thu, 25 Mar 2010 07:33:43 -0700, Loki9 wrote:

Thanks Bubba, that was very helpful. Any tips on how to get the top end
seal out? I might be able to push it out with hydraulic pressure,
though that could get messy. Alternately, I might be able to pull it
out by grabbing the metal part of the seal with some type of puller.

The "end seal" you refer to sounds like a "wiper" meant to keep out dirt
as the cylinder retracts. Once you have the cylinder head unscrewed and
off you can pry the wiper out. Use care not to distort the new wiper if it
has a metal form around the plastic wiper material. This only keeps the
rod wiped clean as it retracts or lowers in this case. The metal ring that
holds the wiper in place is easily bent if care is not used to install.

http://morsemfgco.com/ops/PL780.1.pdf

On page 1 of this pdf document, item 1 is the wiper. Item 3 show vee
packing A.K.A. Chevron or stacked packing. I suspect you may find a soft
plastic cup style packing in this position. This is what causes the leak.
With a blunt tool you should carefully be able to remove this and
reinstall the new packing. At the bottom of the cylinder head there may
also be a o-ring (Not shown in this diagram) inside or outside the
circumference of the head that will be in your reseal kit. Replace with
new, all parts that are contained in your seal kit.