PMK
Active member
The reason there is a warning in the shop manual is because BRP's lowest common denominator in this case is for someone with the IQ of NitWit the Knuckle Dragger who would put the jack he is using directly under the shock itself and if he does so without using a block of wood under the ears that protrude downward from where they are welded to the swing arm and then jacks the Spyder he will bend the bolt that holds the shock. Then when NWKD then attempts to remove the shock for some reason in the future he will discover he can't remove the bent bolt.
To clarify the logic.
Jacking under the shock bolt, on the shocks lower eyelet is a fraction of the stress into the bolt than when riding. Sitting static on the ground, the rear shock lower bolt, actually, all the shock bolts are in a shear loading. When the suspension compresses, even bottoming, the shear loads on the shock bolts increase many times.
The true reason for not jacking under the rear shock lower eyelet is on account of inducing side loads into the steel swingarm brackets, that anchor the rear shock lower eyelet. Under load, those brackets always have a downward load placed into them. Jacking under the eyelet and raising the Spyder can induce side loads that could bend the thin steel brackets.
Past topics and replies have indicated that a bent lower rear shock bolt is from continuous bottoming of the suspension.
If the bolt does get bent, or the swingarm brackets get bent, both can make removing the bolt difficult.