Should be only one spirol pin on the front.
You will have to either shim the "c" channel in place or remove the axle and squeeze with a large bolt, washers and a nut.
Either way the axle pin will have to be removed and possibly replaced if excessive wear is noted.
Good time to ad a grease fitting to the axle if one is not installed.
The 70 I have been working on did not have one so I installed one.
Good Luck!
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