The kit is replaces the worn O-rings (2) on the primer pump used on non-fuel injected engine installations. The primer seals frequently are not re-lubricated until someone complains the primer isn't working or the engine is hard starting. This is most evident by the pump being hard or stiff to operate. Generally speaking, by the time the pump stops performing, the seals are worn (to the point that lube is of little value) and must be replaced.
Beech 19/23 Series
Cessna 170, 172, 175, 177
Cessna 180, 182, 185
Cessna 190, 195,
Cessna 205, 206, 207
Cessna 336, 337
PA-24, PA-28, PA-28R, PA-44
1 packet of Seal Lube
Well worth the money. Kit makes your primer system work like new! I recommend lubricating the o-rings every few months, or as soon as any resistance is felt.
Is this kit for an ESSEX primer ?
Per the vendor, they do not show this kit as being for the Essex primer.
What are the dimensions of the o-rings in this Primer Overhaul Kit? I have a Lukenheimer primer on a Cessna 140.
The dims are as follows: 3/8" I.D. x 1/2" O.D. x 1/16" cross width of o-ring.