Needing to replace front oil seal (Part #22 828). Trying to disconnect drive shaft from engine to transmission input. Coupling assembly (# 763 535 M91) shows a set screw 3/8x3/4 but mine has a 3/16 allen screw in it which surprisingly after 68 years it doesn't want to come out. Anyone been through this maneuver before? Had any luck getting the allen screw out. Parts book shows a set screw 3/8x3/4 so I wonder if someone replaced with this allen screw. Can't put much torque on it since it's 3/16. Other than heating I will probably just try to drill out and replace hoping that I don't bugger up the threads. If you've been there done that let me know. Thanks in advance!
- Thread starter waclar
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