If vehicle raised rather than in neutral stance, propeller shaft slide yoke extends showing silver. If shaft is extended (silver showing) the cavity of slide yoke will have more room to hold grease. Then, when vehicle lowered to a neutral stance, excess pressure will build with in the slide yoke pushing on transfer case and differential(s).I pumped grease in today - 150,000 miles.
Old grease came out of the spider yoke seals.
No grease came out of the slip yoke seals and the shaft didn't extend. Instead, it started coming back out the zerk.
My shaft looked like it might have already been extended - there was a shiny area at the ends. Sorry for the quality of this picture, but arrow is to the shiny area:
View attachment 2009394
I ended up using nearly a whole tube of grease. The good news is that a squeak seems to have gone away.
Any thoughts on this, and what I should do next?
Toyota 100 series FSW states: Add grease until new "grease is seen passing seal of yoke". Toyota has change their recommendation in the 200 series FSM (good for 100 series also): "add grease until slide yoke begin to extend". In either case, always lube propeller shaft in neutral position. Or, remove grease zerk from slide yoke, then lower vehicle back to neutral stance. Excess grease will come out grease zerk fitting as it's lowered. Then replace grease zerk.