Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Topeak Mini Issue

Old 06-18-07, 03:58 PM
  #1  
mcman56
Newbie
Thread Starter
 
Join Date: Jun 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Topeak Mini Issue

I have a Topeak MMB 2 Mini Master Blaster that does not seem to work right. It will pump a little air but not well. When pulling it open (intake stroke) there is quite a bit of resistance like it can not breath in. It only seems to "inhale" for the first two inches of the stroke and not for the remaining 4 inches. I pulled it apart and did not find anything obviously wrong. The Topeak support web site mentions a "check valve" but I do not see anything that looks like a check valve. Any suggestions?
mcman56 is offline  
Old 06-18-07, 04:03 PM
  #2  
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 31,343

Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1089 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The check valve is a one-way valve that lets the pump "inhale" outside air but closes so the pump must force that air into the tube and prevents the air in the tube from flowing back into the pump. It is normally a small metal ball (looks like a ball bearing) located near where the hose connects to the pump base.
HillRider is offline  
Old 06-19-07, 12:12 PM
  #3  
mcman56
Newbie
Thread Starter
 
Join Date: Jun 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
This pump does not have a hose. It is the small type that mounts on the bike frame and has a "grabber head" that connects to the schrader valve. The head looks pinned together. Should I try to press out the pins? Thanks
mcman56 is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.