Off Road SHO
Member
So I'm reassembling the front of the 445A after replacing the steering hydraulic lines and I notice the little PTO drive shaft that connects the hydraulic pump to the crank v-belt pulley has a threaded 3/8" coarse thread tapped hole in the spline end that attaches to the pump shaft.
I've never seen a set screw on a splined shaft coupling and these threads were clogged with dirt and grease, leading me to believe that there never was a screw in there. But should there be?
There isn't a flat spot on the pump shaft splines but I'm wondering if maybe the factory used a pointed set screw? The splined coupling fits relatively snug but there is some play in it so maybe the set screw takes care of that.
I looked it up on Messick's page but there isn't a set screw shown on the pic or listed.
Any thoughts?
Too Many Tractors Tom
I've never seen a set screw on a splined shaft coupling and these threads were clogged with dirt and grease, leading me to believe that there never was a screw in there. But should there be?
There isn't a flat spot on the pump shaft splines but I'm wondering if maybe the factory used a pointed set screw? The splined coupling fits relatively snug but there is some play in it so maybe the set screw takes care of that.
I looked it up on Messick's page but there isn't a set screw shown on the pic or listed.
Any thoughts?
Too Many Tractors Tom