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Pgutierrez's picture
Pgutierrez
Last seen: 11 hours 15 min ago
Joined: 5/14/12
Posts: 125
Lubricant for Jabsco Head Pump

Pump on Jabsco toilet occasionally gets stiff.  I then take out the six screws on top of the plunger assembly, wipe the cylinder wall and rim of plunger gasket with a lubricant.  I’ve tried various readily on hand lubricants (olive oil, etc) and this is good for a few days and gets stiff again.
What lubricant do you think might be impervious to the corrosive effects of piss water?

peter g

2000 C36, MK2, Hull. #1897
wonderful, wonderful, wonderful ! ! !.   5 th Catalina

 

 

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peter g

2000 C36, MK2, Hull. #1897
wonderful, wonderful, wonderful ! ! !.   5 th Catalina

 

 

Haro's picture
Haro
Last seen: 14 hours 30 min ago
Joined: 11/7/14
Posts: 237

Try lanoline  - available at drug stores. Somewhat expensive - 2 Oz is about $ 13.00.
How old are the rubber parts. If it is hard to pump sometimes it is the joker valve.

William Matley's picture
William Matley
Last seen: 3 weeks 13 hours ago
Joined: 1/15/08
Posts: 160

I plan to use ​silicone valve grease.

Is silicone grease safe for potable water?

Both are silicone based, both are safe for use with potable water. ... Silicone grease is commonly used for lubricating and preserving rubber parts, such as O-rings. Additionally, silicone grease does not swell or soften the rubber, which can be a problem with hydrocarbon based greases.

https://www.homedepot.com/p/Super-Lube-3-oz-Tube-Silicone-Lubricating-Gr...

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Bill Matley
Duncan Bay Boat Club
Cheboygan, Michigan
Lakes Huron, Michigan,
Canadian North Channel
"Spirit of Aloha" Hull #1252

dpower
Last seen: 6 days 2 hours ago
Joined: 6/20/08
Posts: 171
Once a year, I do what you do but use vasoline. Then, whenever we pump out I will use head lubricant from WM. When out cruising and it seems to be getting tight, I would use baby oil or more head lubricant to loosen up the pump action.
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David S. Power
Two If By Sea #1687
Burnt Store Marina
Punta Gorda, FL

LeslieTroyer's picture
LeslieTroyer
Last seen: 1 week 21 hours ago
Joined: 3/13/16
Posts: 454
Super Lube inside the pumping chamber is recommended by Head Mistress Peggy Hall (seconded by me). Her book on heads and boat odors is a treasure trove of good info. https://www.amazon.com/Get-Boat-Odors-Peggie-Hall/dp/1892399156/ref=mp_s...
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Les & Trish Troyer
Mahalo 
Everett, WA
1983 C-36 Hull #0094
C-36 MK 1 Technical Editor. 
GaryB's picture
GaryB
Last seen: 3 days 4 hours ago
Joined: 10/26/08
Posts: 522

I keep a small bottle of mineral oil usually buy at the dollar store add a bit, pump a few times and allow to stand shortwhile works every time

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Gary Bain
S/V "Gone With The Wind"
Catalina 36', Hull #: 1056, Year: 1990, Engine: M-35
Standard Rig
Moored: East Boothbay, Maine
Home: Auburn, Maine

Pgutierrez's picture
Pgutierrez
Last seen: 11 hours 15 min ago
Joined: 5/14/12
Posts: 125

Silicone plumbers grease at Ace True value works so far.  $5 for small jar.  Applied with old tooth brush.  

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peter g

2000 C36, MK2, Hull. #1897
wonderful, wonderful, wonderful ! ! !.   5 th Catalina

 

 

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