Yes, they are a simple push in fit. Getting the devils out is a matter of applying a pull, but a slide hammer may break the crankcase casting before the bond between steel and alloy plus 80 years of intimate contact gives way. Top of the guide is threaded, so an obvious point of purchase for the official tool. A similar well supported homespun extractor, applied force and heat is a better bet than violence. Outer Cam Followers cannot be replaced after refitting the guide, nor will the followers push out first, they will foul on the crankcase. Ensure correct orientation of the followers.....( One side is curved ) and correct alignment of the outer guides before seating them in place with a smack for good luck.
Good Picture there from Brandis, no doubt taken as a prelude to a lot of hassle.
Swarfy
