Hey RAY, WHEN YOU USE ALL CAPS (on the INTERNET) IT IS CONSIDERED TO BE "SHOUTING".
when _I_ have this sort of question, I usually ask the parts department to get me a picture of the parts breakdown so I can see an "exploded" view.
when you say "stacker with reach" that is something that kind of throws me off, since a "stacker" may well be an "order picker" type of unit. are you referring to a straddle/reach truck, or is this some sort of customized/specialized unit?
If this is a walkie-reach straddle stacker, then you have roll pins holding the axle in, and it is a long pin that fits into both axles if it is a "tandem" wheel