Tisunac Posted April 17, 2014 #1 Posted April 17, 2014 I need an advice. Sunday morning I went out to check the air pressure in my front forks ('99 Venture Sec.Gen.) before going to a 300-miles trip two-up. I would usually keep the pressure at 3-4 PSI and am using a digital HD pump that is quite precise. So I put about 4 PSI in left fork and could see air pressure dropping back to zero within a few seconds. Right fork did the same thing. I tried several times thinking that I didn't place the pump right but with the same result. So I guessed that my forks are leaking air. I checked around and couldn't see any trace of oil anywhere. So, we went for a ride and I paid a close attention on how it rides, especially the front of the bike. To my surprise, the ride was very smooth and with no problems at all. My questions - do I need to address that problem since it rides just fine? By ignoring it, will I make it worse? Is it safe to assume that it's not leaking any oil since I couldn't find any? What do I have to do, if anything? Please go easy on me - I'm not very handy and most of the work (if any) would be done by a mechanic. I would change the pipes or leveling links but I wouldn't mess with the forks. Bike have around 32K miles, bought it about 2.5 years ago with around 20K. Riding mostly two-up (me around 250 lb on a good day, my wife half that). Rear shock usually around 40 PSI. Thanks for your time.
BratmanXj Posted April 17, 2014 #2 Posted April 17, 2014 Check the simple things first...Are the schrader valves at the top of the forks tight? Even replace the valve core with some inexpensive ones from the autoparts store.
Neil86 Posted April 17, 2014 #3 Posted April 17, 2014 Since there is no interconnection on the air between the front forks on an RSV, I would suspect your pump is leaking rather than both forks starting to leak air at same time.
Tisunac Posted April 17, 2014 Author #4 Posted April 17, 2014 You see, that's a good suggestion. I will check the pump first (on the rear shock). If that's not it, I will try to replace valves in it.... Thanks guys.
Tisunac Posted April 17, 2014 Author #5 Posted April 17, 2014 What about riding it like this? Still safe? Am I messing anything up???
BratmanXj Posted April 17, 2014 #6 Posted April 17, 2014 The forks are OK at 0psi, the pressure affects spring pre-load. IF you do have a leak you stand the chance to pump oil from your forks. 1 other thing I remembered since my 1st post. When I bought my RSV last year I did a fork oil change by removing an allen head bolt at the bottom of the fork leg, drained the fork and refilled through the schrader valve. I think it took a long-shank 6mm allen to tighten up that bottom bolt, and you would have to remove the front axle to access.
ediddy Posted April 17, 2014 #7 Posted April 17, 2014 I have an 05 Venture I purchased new. Have never put air in the front forks and bike handles fine.
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