Topic: CX500 Fork oil amount

[my78k]

**** Not an oil thread**** 

Actually it is an amount of oil thread!

The CX500 I inherited feels VERY spongy and one of the things I would like to tackle is replacing the fork oil. Problem is that on these forks there is no drain holes! So my thoughts are to suction out the old and refill it. I don't want to rebuild the forks/seals and I assume I won't be able to get all of the fluid out so my thought is just to suction out what I can, add some and suction it out again repeat a few times so that I can get a pretty good feeling the old oil is out and then re-fill. Since it likely won't be empty I don't want to guess how much to add. I am hoping someone knows a measurement for the measure down method...anyone have an idea?  (or have I totally lost you as to my logic???)

Oh it is a 1980 CX500 classic

Thanks in advance,
Dennis

[tbpmusic]

Early CX500's (not air forks) had almost the same forks as CB400T/T2, CB450T, etc.
In fact I used CX500 top fork bolts in CB400T forks, so....

At any rate, there are no drain holes - you have to remove the fork, take out the giant allen bolt in the top, then pour the oil out. You can use the head of a bolt (14mm) in lieu of a giant allen wrench.

It's kind of insane, but that's how they are, very inconvenient.

Do you need a manual??

[my78k]

Yeah I know they are a pain which is why I was hoping to do the measure down method...no need for a manula I have one that covers the process but I am lazy! Plus I would like to get a good amount of oil in there and see is the seals are still good. If I am going to tear the down I am going to do the seals at the same time.
Dennis