I assume the problem is getting the axle shaft out far enough to get the c clip in the channel? If so, here's a quote from
@PADDO that may help. Also, I used my wife as an extra puller to get that axle back out while I slipped the c clip on.
"The inside of the shaft is drilled and tapped, 8x1.25mm iirc, you can find suitable bolts under the hood to borrow and utilize. Last time I did this I grabbed a 50mm long 8x1.25 to use with a simple lever cross bar to pull the shaft home, slow steady force will squish the grease where it needs to go and get the shaft out."
Edit....Too late and solved the wrong problem... oh well.