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Primer Overhaul Kit

$11.50/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

Reviews

*****

James M Verified Purchase

PRIMER OVERHAUL KIT

March 28, 2024

Richard V Verified Purchase

PRIMER OVERHAUL KIT

March 26, 2024

Works great . Cessna N172

Noah A Verified Purchase

PRIMER OVERHAUL KIT

March 21, 2024

right size, good delivery

Marc C Verified Purchase

PRIMER OVERHAUL KIT

March 12, 2024

this kit makes your primer work as good or better than knew, worth the money, on a side note, be aware there are 2 different primers in older aircraft, namely a cub, 1 had this primer, the other used a packing instead of O-rings, that was a new one on me.

Rick B Verified Purchase

PRIMER OVERHAUL KIT

March 8, 2024

Makes a sticky on functional primer work like new for a very good price, I have helped 3 people fix their primers with these kits.

Rick B Verified Purchase

PRIMER OVERHAUL KIT

February 22, 2024

According to our A&P, the primer is now working nice and smooth with little force necessary, hopefully will try it soon. Well see it stays good over time.

Philippe C Verified Purchase

PRIMER OVERHAUL KIT

January 31, 2024

Perfect.

Lane A Verified Purchase

PRIMER OVERHAUL KIT

December 26, 2023

Nice kit. Only wish instructions would specify where to apply the grease.

Allan B Verified Purchase

PRIMER OVERHAUL KIT

December 21, 2023

Holy Cow this is a miracle cure. Okay, it’s just some silicon lube and two new O-rings, but it’s also cheap. Instructions were very clear and easy to follow. Fifteen minutes of work (because I was slow) and it’s like I have a brand-new primer.

Robert K Verified Purchase

PRIMER OVERHAUL KIT

December 12, 2023

Q&A

Please note, Aircraft Spruce Canada'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 Canada 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

Q: Are the o-rings in the kit Viton?

No they are 70 Duro Nitrile material.

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