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Primer Overhaul Kit

$6.50/Each
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Part# 05-03637

Overview

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.

Application

  • Beech 19/23 Series
  • Cessna 120,140,150,152
  • Cessna 170, 172, 175, 177
  • Cessna 180, 182, 185
  • Cessna 190, 195,
  • Cessna 205, 206, 207
  • Cessna 210
  • Cessna 336, 337
  • MK20 Series
  • PA-24, PA-28, PA-28R, PA-44

In The Box

  • 2- O-rings
  • 1 packet of Seal Lube
  • Detailed instructions
  • Frequently Purchased With
  • Customers Also Viewed

Reviews

Worked perfect, and for a small amount we saved a replacement of the primer pump.

Arne R Verified Purchase

PRIMER OVERHAUL KIT

November 29, 2022

Fits easy to install

Glen F Verified Purchase

PRIMER OVERHAUL KIT

November 8, 2022

Im sure whatever lube was used on the primer was not the right stuff, as it was so stiff it was hard to operate, but this kit did the trick! It works super smooth and easy now and the kit took all of 5 mins to install.

Larry T Verified Purchase

PRIMER OVERHAUL KIT

August 9, 2022

Worked like a champ. My primer was stuck and would not move without pulling super hard. Even when I pulled it out to replace the o rings I was worried about messing something up. Followed the directions. Reinstalled and it moves with almost no effort. I have never had a primer move so easy. Now I have to make sure the primer is actually locked in place. Awesome product and easy remedy.

Duncan M
July 15, 2022

Great Kit to keep in the glove box.

Brandon O Verified Purchase

PRIMER OVERHAUL KIT

July 5, 2022

Everything you need to service the primer, all in one package.

Chip C Verified Purchase

PRIMER OVERHAUL KIT

May 27, 2022

Perfect for the job as advertised excellent service

Joseph A Verified Purchase

PRIMER OVERHAUL KIT

April 10, 2022

o rings seem smaller than previous but the old ones are probably swollen. will be trying soon once primer system is closed up and operating.

Charles D Verified Purchase

PRIMER OVERHAUL KIT

March 9, 2022

Exactly what my cutlass needed. Priming was always difficult stiff to pull or push. Very easy fix. Remove primer nut and extract plunger. A little fuel will come out so be prepared. Replace o-rings lube and what a difference.

Thomas W Verified Purchase

PRIMER OVERHAUL KIT

March 6, 2022

The Primer kit worked like a charm... It was easy to use and now the primer works good as new.

Sam E Verified Purchase

PRIMER OVERHAUL KIT

February 19, 2022

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: 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.

Q: FYI: I just measured the O-rings on an Essex primer. They are the same dimension as the O-rings in this kit.

Ok thank you for the information. We will post it for other customers.

Q: What is the MS number for the o-rings in this kit?

MS29513-012

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