torque water pump nuts to 30 in-lb

[Brentsbox]

I am putting a new water pump on my Merc. 40 hp (1982) and the manual says that I need to torque the bolts to 30 in-lb. I dont have a in-lb torque wrench and am wondering if there is a way around this. Can I get it to tight? I realize that I could break the plastic housing but will it work correctly if I dont use a torque wrench ?

 

[WillyBWright]

Re: torque water pump nuts to 30 in-lb

They publish torque values for everything. I've never seen anybody use a torque wrench on a water pump. Evenly snug and not too much to distort the plastic.

 

[Chris1956]

Re: torque water pump nuts to 30 in-lb

Bayou, Inch pounds are 12 times foot pounds. That is 30 inch pounds is about 3 foot pounds.<br /><br />Of course you really do not need a torque wrench. Use a socket wrench, and one hand only (so you are not too strong), put your hand near the pivot point of the wrench and use just your wrist muscles to tighten. It doesn't need to be too tight.<br /><br />This is the same method I use to tighten american car's valve cover bolts-they break every time if you are not careful.

 

[jim dozier]

Re: torque water pump nuts to 30 in-lb

Chris1956 I believe you meant an inch-pound is 1/12 of a foot-pound.

 

[Chris1956]

Re: torque water pump nuts to 30 in-lb

jimd, you are correct. Not enough coffee this morning, I'm afraid!

 

[achris]

Re: torque water pump nuts to 30 in-lb

Just use the 'diver method'. Tighten the nuts/bolts up until they go 'soft', then back a 1/4 of a turn <br /><br />Seriously, I use a 1/4" drive rachet and hold it about half way and then just 'snug' them up. Too tight and the plastic housing will distort. <br /><br />Chris.........