Thread Tools Search this Thread Display Modes
Old 11-17-2009, 05:08 PM   #1
2 Rivet Member
1960 26' Overlander
Everett , Washington
Join Date: Sep 2007
Posts: 24
How to Test Grover Air Pump

Posted a few days ago about the fuse size for my Grover Air pump in my '60 Overlander. I'm going through my water system and everyone's help was appreciated.

Now I have another question. I disassembled the pump, cleaned everything, reassembled and filled with 20wt oil to bottom of fill opening as instructed on other threads. Pump runs great, but I can't feel it pushing any air from the lines. I disconnected the air line at the top of the piston housing and can't feel air moving when the pump is running. Any ideas on what might be happening or how to test for proper air flow? The pump seems to be working great but I don't want to put everything back together until I'm sure it's moving air. Thanks in advance. Couldn't keep up with this old thing without you guys! BTW, I also have a Univolt question that I'll be posting in a separate thread.

glang58 is offline   Reply With Quote
Old 11-17-2009, 06:25 PM   #2
4 Rivet Member
1971 29' Ambassador
Leonardtown , Maryland
Join Date: Oct 2004
Posts: 262
Images: 3
I am not familure with your particular pump but I know a little about pumps in general. If it were mine, First I would hold the output line shut and see if air is being pushed back out the intake.This will show a bad flapper or other device which prevents back flow. If no back flow, then I would take a little, and I stress little, heavy oil, 90 wt. Put a vew drops in the piston chamber. Enough drops to make a seal around the piston. This will tell if the piston is worn out. If the output air increases then a worn piston is the problem. I must say again, this is what I would do if it were mine to locate the problem. Ihave no knowledge of how to get it rebuilt.

Rebee - WBCCI #1325
2002 Classic Ltd 30'
2007 Dodge 2500, 6.7 Cummins
Rebee is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuse Size for Grover Air Pump glang58 Electrical - Systems, Generators, Batteries & Solar 8 11-15-2009 10:13 AM
Tank pressure from grover air pump Ron Banks Fresh Water Systems 8 08-29-2009 06:20 AM
Hand Pump Water Faucet - How to Test? tpezzolo General Repair Forum 0 03-30-2009 02:09 PM
air pump vs water pump kamo Water Heaters, Filters & Pumps 22 02-27-2008 02:01 PM
Grover air compressor oil? samb Plumbing - Systems & Fixtures 10 01-19-2007 10:07 PM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:27 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.