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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

Reviews

Highly recemmended! Works great, easy to install. Be sure to clean your primer, not just swap the seals and lube. The sticky dirt buildup was nasty.

Mike R Verified Purchase

PRIMER OVERHAUL KIT

January 21, 2022

Anna E Verified Purchase

PRIMER OVERHAUL KIT

December 14, 2021

On hand to fix stiff primer as soon as A&P is available.

Bobby P Verified Purchase

PRIMER OVERHAUL KIT

November 24, 2021

Easiest maintenance item ever. Nicely packaged with clear instructions.

Rob L Verified Purchase

PRIMER OVERHAUL KIT

October 13, 2021

Perfect kit. Great price for not just a one time use but for a continuance use of the lubrication. The o-rings are a one time kit which would be nice if they had multiple but understandable since typically owners only have them changed once a year or one every other year.

Sharanjit P Verified Purchase

PRIMER OVERHAUL KIT

October 5, 2021

Worked flawlessly. Took less than 5 minutes to install in a 75. C150M

Richard M Verified Purchase

PRIMER OVERHAUL KIT

September 14, 2021

Colton S Verified Purchase

PRIMER OVERHAUL KIT

July 27, 2021

Works as advertised!

Mario A Verified Purchase

PRIMER OVERHAUL KIT

July 22, 2021

Used it once. Worked fine.

Wilf S Verified Purchase

PRIMER OVERHAUL KIT

July 10, 2021

Exactly what was needed to make primer plunger silky smooth. Fit perfectly

Robert L Verified Purchase

PRIMER OVERHAUL KIT

June 11, 2021

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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