DP-D1 Vertical Shaft upper nylok nut

[Pescadora]

I left my manual on the boat (60 miles away) and am in the last stages of final assembly. Pinion nut in and torqued. Proper shims under the ball bearing. Spacers and roller bearing installed. Spanner nut spun down and snugged. But I cannot seem to find the torque specification for this top nylock spanner nut. Pretty sure that was in my manual.

Anybody have a hint on what that spec might be?

 

[Scott Danforth]

that is a bearing nut. and yes, the manual improperly calls it a nyloc

there is a very specific sequence in the manual. Not a torque for the top of the vertical shaft.

however torque is 118 lb-ft for the pinion nut



and you set a dimension and a pre-load with the bearing nut.

 

[1960 Starflite]

I don't have a Volvo, but, what a great response from that "Grumpy" boater !

 

[Pescadora]

Appreciate the support. However you are referencing the technique for the older drives. In the DP, the pinion bearing torque spec is 81 lb/ft (110 nm) rather than the 118 lb/ft of the earlier drives. The bearing nut also changed. Instead of using a toothed locking washer to secure it, they changed the nut to a spanner type that employs nylock retainer.

All that said, it appears there is not tightening specification for that upper nut. Since those two bearings are pressed on the vertical shaft, I guess there would not need to be one. I do know they typically do not break loose easily.

Again, thanks for responding. I hate being without my DP-D1 manual.

 

[Pescadora]

I don't have a Volvo, but, what a great response from that "Grumpy" boater !

Yeah, but he's a cheesehead, as am I. As far I'm concerned he can be as grumpy as he wants.

 

[muc]

There isn't a torque spec for this that I have ever seen. Just tighten it as tight as you can with hand tools.

 

[Pescadora]

There isn't a torque spec for this that I have ever seen. Just tighten it as tight as you can with hand tools.

Copy that. Done and done. Thanks all. Onward.