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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: jbsealy on December 03, 2023, 10:11:29 pm

Title: 1984 C10 250 I6 power steering belt adjustment
Post by: jbsealy on December 03, 2023, 10:11:29 pm

Gentlemen,

I have a stock 1984 C10 with a 250 inline 6. Am trying to figure out how to adjust belt tension as am installing a new belt. The PS pump belt also turns the air pump pulley. I seem unable to figure out how the PS pump will pivot so tension can be adjusted. The alternator is driven by a separate belt and has an obvious pivot bolt and a slotted bracket for adjustment. I am wondering if the tension is a function of pivoting the air pump? Pretty sure it is something simple that will embarrass me.

Any advice will be very appreciated.

Selo

Title: Re: 1984 C10 250 I6 power steering belt adjustment
Post by: jbsealy on December 04, 2023, 10:10:09 pm

 Figured it out.

The adjustment is accomplished using the air pump.

Cheers,

Selo

Title: Re: 1984 C10 250 I6 power steering belt adjustment
Post by: Captkaos on December 05, 2023, 11:58:29 am

How did I miss this yesterday?  Glad you figured it out.

Title: Re: 1984 C10 250 I6 power steering belt adjustment
Post by: jbsealy on December 06, 2023, 09:36:59 am

Seems obvious now. But I didn't approach this project expecting the smog control pump would
be how to adjust the PS belt tension! Both the FSM and Haynes were useless.

Having looked at it closely now, it is amazing all the bracket pieces present to mount the pump.
I would hate to have to assemble all that from a pile of parts.

Thanks for your reply.

Selo

Title: Re: 1984 C10 250 I6 power steering belt adjustment
Post by: zieg85 on December 06, 2023, 10:54:16 am

I barely remember that fiasco on my 84.  It was a head scratcher for sure