4.3 belt alignment issues

[mlewis0113]

Previous reapir failures strike again with my boat. I don't have a serial number as someone swapped in a Jasper reman engine into my Glastron that originally had a Volvo drive. I noticed when I was running wires for my stereo that my engine was covered in rubber dust. I found the belt shredded on one side.

Further inspection revealed that the belt was definitely not tracking straight and it appeared the power steering pulley was too far forward. I noticed the pulley wasn't pressed on all the way. I rented the tool and pressed it on until the front of the pulley hub was flush with the shaft. It still appears that the power steering pump is too far forward.

The guy I bought it from stated that he converted it to the serpentine system, but he's lied about numerous things so take that with a grain of salt.

My engine is definitely pre-vortec. All of the engines I've seen with serpentine systems are vortec headed engines. Are the mounting faces for the pulley brackets on the heads different between pre-vortec and vortec? Should I just attempt to swap back to the v-belt system? Photos were taken after I pressed the P/S pp pulley on completely. Any input is appreciated.

 

[Alumarine]

Maybe it's just the perspective in picture 173504 but it looks like the PS pump is at an angle compared to the other pulleys.

 

[mlewis0113]

Maybe it's just the perspective in picture 173504 but it looks like the PS pump is at an angle compared to the other pulleys.

I kind of thought that too. That's why I'm wondering if the brackets are incorrect.

 

[Alumarine]

If you put a straight edge on it you should be able to tell if it's parallel with the other pulleys.
Can that pulley go in more?

 

[mlewis0113]

If you put a straight edge on it you should be able to tell if it's parallel with the other pulleys.
Can that pulley go in more?

I do intend to get a straight edge on it but I'm pretty sure it's not parallel just by looking at it. The front of that pulley's snout is flush with the end of the shaft. Using the proper tool to press that pulley on, the pulley is as far as it will go. I probably pushed it on 1/2" before I took the above photos.

 

[MichaelBC]

The pulley of the steering pump is just pressed on the shaft. Maybe you should set it a little deeper. This is how I adjusted mine.

 

[mlewis0113]

The pulley of the steering pump is just pressed on the shaft. Maybe you should set it a little deeper. This is how I adjusted mine.

Is it a good idea to have the shaft proud of the pulley? I'm not necessarily against it, just asking.

 

[Paintman1960]

Maybe it's just the perspective in picture 173504 but it looks like the PS pump is at an angle compared to the other pulleys.

Agreed !

 

[Alumarine]

Is it a good idea to have the shaft proud of the pulley? I'm not necessarily against it, just asking.

If that's what you need to make it work.

 

[MichaelBC]

Is it a good idea to have the shaft proud of the pulley? I'm not necessarily against it, just asking.

Hello,

I do not know waht you mean by proud of the pulley. Maybe my english is not good enough. But I can show you how I did install my new pulley on my new pump.




I had this installation an removal tool. It worked fine to remove the old pulley from the old pump to get the bracket out because I wanted to reuse that.



But the thread of the install tool was smaller than the thread in the pump shaft. So I decided to do it the old fashoined way and use a screw and a nut.



By turning the nut you the pulley gets pressed on the shaft and you can adjust how far it should go in. Be sure to turn only the nut or you will ruin the thred in your shaft.
This really hard and mayb I should have warmed up the pulley in the oven. But I managed to put it in place, even if the screw was destroyed.


I also had some spacer washers between the bracket and the pump on my old engine. I can see that these are missing in your installation. By putting them in the pump will also move a little backwards and closer to alignment.

 

[mlewis0113]

MichaelBC, by proud I meant the shaft would stick out from the face of the pulley. Using your method, having the shaft proud would not be possible as the washer would contact the face of the pulley hub and the face of the shaft at the same time, which would prevent the pulley from going on further than flush. Thank you for your insight on the spacer. I'll look into that.

 

[MichaelBC]

OK, now I understand what you mean by proud. My pulley was perfectly aligned when the shaft was 6 milimeters inside the pulley. So it does not stick out,

 

[mlewis0113]

OK, now I understand what you mean by proud. My pulley was perfectly aligned when the shaft was 6 milimeters inside the pulley. So it does not stick out,

Yeah I have pressed the pulley on completely flush and it is still too far forward. I'm going to dig into it tonight and see if something is bent, or missing spacers, or what.

 

[mlewis0113]

I dug into this last night. All of the brackets appear to be the correct part numbers. I bent the P/S bracket backwards a little and it seemed to help. Also pulled off the crank, alternator, and water pump pulleys to have them blasted and powder coated. There was quite a bit of crud built up in the grooves. I'll get a new belt when those come back. I'll update how it goes when I get it back out again. Here's a photo after I bent the bracket back.

 

[Alumarine]

That looks better but still looks out of alignment.
Did you use a straightedge?

 

[mlewis0113]

Yeah, but unfortunately the end of the crank pulley had some burrs that was causing me to get different readings. I'm gonna clean everything up and try again.