Serpentine belt tensioner out of adjustment?

[Maxjeep1]

What model truck is this?

M1151A1

 

[Autonomy_Lost]

What model truck is this?

Its an M1151a1

 

[Autonomy_Lost]

I got the belt completely off, pulled it into a straight line and it measures about 54.25" long. So just over double that length puts it around 110" or so in circumference I suppose.

 

[Retiredwarhorses]

M1151A1

if you didn’t remove the additional positive and negative cables required of 400amp and did not change out the Gen/PS bracket, than you had a 200amp. Buy a new correct length belt…

 

[Retiredwarhorses]

I got the belt completely off, pulled it into a straight line and it measures about 54.25" long. So just over double that length puts it around 110" or so in circumference I suppose.

wrong belt or your routed wrong….

 

[Autonomy_Lost]

wrong belt or your routed wrong….

I'm really thinking wrong belt. The routing diagram is right on the truck and it was definitely routed correctly.

 

[juanprado]

Cogs make no difference . Dayco and goodyear use them but gates does not. If the belt has a number starting with K any parts store can supply.

Serpentine belts have a universal numbering system.
Number of grooves and overall length.

 

[Autonomy_Lost]

I got a new belt from Mac Motors today that is apparently 112" long. That's almost certainly longer than what was on there. We'll find out tonight if it fixes the issue!

 

[Autonomy_Lost]

New belt was visibly longer than existing belt, and went on without a hitch!

 

[juanprado]

That corresponds to a Gates K081124

8 groves 112 2/5 inches long