Hydraulic pump fan belt need part number

Topic: Hydraulic pump fan belt need part number (Read 993 times) previous topic - next topic

Hydraulic pump fan belt need part number

September 15, 2011, 01:53:59 pm

Climbing Wolf Creek Pass in CO and lost the radiator hydraulic pump belt. That's the only belt I don't have a spare for. Wouldn't ya know! Does anyone have the part number handy?

Detroit Diesel 6V92

Thanks in advance!
ken

Re: Hydraulic pump fan belt need part number

Reply #1 – September 15, 2011, 02:16:50 pm

Ken, the hydraulic pump belt is a Gates K060445. This is the most common problem belt on my coach so I carry two spares. I imagine that this is due to a misaligned idler pulley that I haven't had time to work on yet.

Re: Hydraulic pump fan belt need part number

Reply #2 – September 15, 2011, 02:31:05 pm

Thanks Kent I owe ya!

Re: Hydraulic pump fan belt need part number

Reply #3 – September 15, 2011, 02:46:55 pm

Its a very easy replacement. You just need a ratchet or breaker bar to take the tension off with the idler pulley. Try to align the new belt in the middle of the pulleys.

Re: Hydraulic pump fan belt need part number

Reply #4 – September 15, 2011, 02:50:46 pm

I have Good Sam Roadside coming to do it for me.

I'll advise him to align the new belt in the middle.

When I get Pagosa Springs I'll pick up a couple of spare blets.

BTW: We are meeting up with Carol & Jeff there! I'll tell em' you said Hi!

see ya
ken

Re: Hydraulic pump fan belt need part number

Reply #5 – September 15, 2011, 02:52:23 pm

And Kent is correct! Belt issues usually traced to idler pulley alignment or bearing wear.

Re: Hydraulic pump fan belt need part number

Reply #6 – September 15, 2011, 03:19:31 pm

Negative, the belt is a K080450HD otherwise known as a 8PK1146. This is a Gates Green Stripe in their Fleetrunner line. The eight refers to 8 ribs. They are probably NOT going to have this belt in any town other than a major city.

The size is 26mm x 1160mm OC or 1 3/32" x 45 5/8" OC.

The road service guy may have Kent's belt and it will fit on. Length may not be too bad but you NEED, NO, MUST HAVE the 8 rib belt. The installation should go across the entire crank pulley so you do not have to center it. If you have to use the narrow belt, buy two as it will not handle the load for too many miles.

As Kent said, the tensioner is probably out of alignment. Something you can fix in 10 minutes while on the road. See my earlier posts for photos.

I have one at my computer now and can FedEx or USPS overnight it to you if you can't get the right one. Call me at 530.477.7465 and I will go get it going and explain the easy alignment of the tensioner. I had to wait two weeks for the two I ordered to arrive.

For all readers: As I said in my earlier post, this is the MOST important spare to have with you at ALL times. Even for the less mechanically inclined, sticking the belt on is only a one, yes, one minute job.

Hope I have not ruffled any feathers but this is a big one to me.

Re: Hydraulic pump fan belt need part number

Reply #7 – September 15, 2011, 03:42:12 pm

Ken

Here are three photos of what it should look like after installation. In the close-up of the tensioner, you can see the square 3/8" hole the ratchet or breaker bar will fit into to rotate the tensioner up and allow the belt to be fitted.

Notice how the belt fits across the entire crank and hyd motor pulley.

The tensioner close-up also shows the flat washer (at the top) I fitted to bring the tensioner to the same angle as the engine and hyd motor pulley.

For those with rear radiators, the installation will take longer than a minute.

Re: Hydraulic pump fan belt need part number

Reply #8 – September 15, 2011, 03:54:39 pm

Ken,

Better photo with arrow of the "angle adjustment washer". If using hardware store angle indicator, compare tensioner roller not tensioner body to the big crank pulley and hyd motor pulley.

Pierce

Re: Hydraulic pump fan belt need part number

Reply #9 – September 15, 2011, 04:34:40 pm

Also,once the belt is installed, pull hard on it and make sure the bracket holding the pump to the block is not cracked-- a not uncommon issue. If the pump moves even the slightest bit when you pull hard on the belt, the bracket is cracked and will have to be removed and a reinforcing gusset welded on.

Check this once a year on any coach with bracket mounted hydraulic pump.

Brett

Re: Hydraulic pump fan belt need part number

Reply #10 – September 15, 2011, 05:19:29 pm

Pierce, I pulled that number right out of the Foretravel Owners Manual. Peggy got the binder out of the coach for me. I agree that a full width belt would be better. Did you tell me that before and I forgot? How did you find out about the 8 rib belt number?

Now I have to order two more belts.

Re: Hydraulic pump fan belt need part number

Reply #11 – September 15, 2011, 06:11:01 pm

Hey Kent, blame it on the drugs. OK, long story. When I bought the U300 in North Carolina, we were talking to the owners about the trips they had taken. Actually, to Oklahoma, just over the border where they had a farm. They lost a belt and had to wait half the night for the tow truck guy to come to their rescue with a new belt. I looked at the belt and thought fine, I'll pickup a couple of spares at the parts store. So, off we went a bit further east to Hope Mills and then home, west to Springfield, MO area to visit more friends (yes, I do have friends). Next morning in a rainstorm, the engine suddenly lost most of it's power. I pulled over and as I moved my head, noticed the warning lights were on. Quickly changed to the matching spare and now very wet, climbed back in and off we went. We were almost home when that one went. This time, I noticed the tensioner was off a bit. Enough so you could easily see it. I had a degree finder so pulled the tensioner, tried different combinations of washers until I got the three to all agree. Forgot to say the belt had been migrating from the center to the side closest to the rear bumper. After I got home I did a little research and found that if it has 8 grooves, it should have 8 on the belt to match. After more research on several forums, I ordered a couple of the Green Stripe Gates as they got great reviews from almost everywhere I checked. While I was waiting, we took a trip to San Francisco. Lost another of the 6 wide close to Golden Gate park. Found a red zone and found the closest part store, Autozone about 5 blocks away. Waited until the engine was cool and then drove there, dbl parked and tried belts until one fit. Drama was not over yet. As we started to cross the Golden Gate, the propane door came open, all the way open. Had to move over from the right lane a little as I thought we were going to decapitate bridge walkers. Closed it on the other side and adjusted the latch pins on the body.

The 8 groove belt has been great for thousands of miles since then. The hard part is that when a belt comes apart and you notice it, it is a mile behind so you can't compare numbers, etc.

So, learned a couple of things. The GV steering wheel is the wrong diameter to see the speedo and the warning lights at the same time. When I adjust it to see the lights, I can't see the speedo/tach well. Going to make a warning buzzer to fix that.

The U300 on ebay a while back (reading between the lines) had a belt failure at the entrance to a tunnel in Zion or another NP. Rather than stopping, he punched the override and kept driving...and ruined the engine. When the warning lights come on, you have 30 seconds to park it. It also stores a code that you can retrieve with the switch under the dash.

Summing it up; thats why the belt and the correct spare is so important to have on board. Imagine a failure heavy traffic at night in bad weather or a failure on one of those 110 degree summer days and being stuck. Carry everything the in slideout drawer now.

To the E E (eagle eye) Red is Redline injector cleaner. Have a dirty injector that really shows itself on winter mornings. Red diesel slightly more expensive delivered than pump diesel in CA.

Anyone else want to pile on?

Re: Hydraulic pump fan belt need part number

Reply #12 – September 15, 2011, 06:21:49 pm

The 8 rib belt makes a lot of sense. I will be ordering a couple.

And yes Pierce, I do believe you about the injector cleaner. But I also know if you got caught in Oklahoma with the red liquid in that Racor bowl, you'd have a heck of a time convincing any of our Troopers it was injector cleaner. I would either paint the clear bowl black, put on one of the solid filters or find a different injector cleaner just for piece of mind.

Re: Hydraulic pump fan belt need part number

Reply #13 – September 15, 2011, 11:06:16 pm

The Good Sam guys showed up with a K060445. It was a tight fit and it is narrower than the pulley but we got it on and I was able to make it to the campground in Pagosa Springs.

Pierce: Thanks for the info and the offer to overnight the belt. Since I have the K060445 on and I'm not going anywhere soon I'll see if I can have one of the local auto shops get one for me. After watching the guy put the belt on I think you exaggerated how long it takes to swap one out. He did it in about 5 minutes! You where right on about how soon you have to pull over. I was heading up Wolf Creek Pass and as such was watching the temp gauge pretty close. It jumped to 225 so I backed off the throttle thinking the grade was heating the engine but it didn't drop it jumped to 230. Luckily there was a pull out right there. Pulled over and the check engine light popped on and the beeper started howling at me. If the pull out wasn't there I would have been tempted to continue on until I found one. Would have been a big mistake. Also thanks for the photos. They really help. I think I owe you one too! Hope to meet up with you down the road to say thanks in person!

see ya
ken

Re: Hydraulic pump fan belt need part number

Reply #14 – September 15, 2011, 11:54:06 pm

Quote from: kenhat – September 15, 2011, 11:06:16 pm

The Good Sam guys showed up with a K060445. It was a tight fit and it is narrower than the pulley but we got it on and I was able to make it to the campground in Pagosa Springs.

Pierce: Thanks for the info and the offer to overnight the belt. Since I have the K060445 on and I'm not going anywhere soon I'll see if I can have one of the local auto shops get one for me. After watching the guy put the belt on I think you exaggerated how long it takes to swap one out. He did it in about 5 minutes! You where right on about how soon you have to pull over. I was heading up Wolf Creek Pass and as such was watching the temp gauge pretty close. It jumped to 225 so I backed off the throttle thinking the grade was heating the engine but it didn't drop it jumped to 230. Luckily there was a pull out right there. Pulled over and the check engine light popped on and the beeper started howling at me. If the pull out wasn't there I would have been tempted to continue on until I found one. Would have been a big mistake. Also thanks for the photos. They really help. I think I owe you one too! Hope to meet up with you down the road to say thanks in person!

see ya
ken

Ken & Dori,

You are quite welcome. That is what makes Foretravels and the forum so great, owners helping other owners.

If no joy locally, try Amazon at $22.22/each, site: Amazon.com: gates k080450hd Free shipping if you buy two.

The 450HD is a tiny trace longer than the 445 so it clears everything without fighting it. Gaylie put the watch on me and after a couple of tries, I installed the one in the photo in 17 seconds.

If no one has the 450HD in town, just get another 445 as a spare and get the 8 ribs sent ahead.

It's too bad the incorrect belt is listed in the book. This mistake has cost several owners thousands of dollars and others a lot of irritation. Sure glad you didn't hit the override switch. After this, you can see where Detroit overheating problems have come from.

Best on the rest of the trip. You guys are in one of the prettiest areas in the U.S.

Pierce

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.

Re: Hydraulic pump fan belt need part number

Reply #15 – September 16, 2011, 10:45:44 am

Got a call back from FT emergency (Mark) who didn't have the book in front of him but gave me the K060445 part number off the top of his head. I was pretty impressed with that. Was a little less impressed with the fact that it took 6 hours to get the call back.

So Kent you where correct with the factory spec belt and Pierce you've gone above and beyond the call of duty (out of necessity) and come up with the "most" right belt.

I agree with Pierce. If you have a 6V92 check this belt and replace with the K080450HD ASAP if you haven't already!

And just to prove I'm in one of the most beautiful places in the country a couple of pics of and aspen forest we stumbled on when out 4 wheeling in the San Juans the other day.

see ya
ken

Re: Hydraulic pump fan belt need part number

Reply #16 – December 03, 2012, 09:39:25 pm

Ken and Pierce,

After reading your posts (over a year ago) of your mishaps with the hydraulic fan belt breaking and finding the correct one I decided to check mine when I remembered the PO telling me that the current belt was incorrect. He wasn't a hands on type of owner and I'm still learning since I brought the coach home in march.

When I checked it I discovered the belt only had 6 ribs and 2 of the grooves on the crank pulley were actually rusted! With the motor running I could see the hydraulic fan pump tensioner was bouncing and upon inspection of the belt I noticed it was starting to fray on one side

I ordered two of the correct belts (K080450HD) from Amazon.

I followed your directions Pierce and used a 3/8" breaker with a pvc pipe extension to loosen the the tensioner and remove the old belt. It is a K060450. It fits but is definitely not the right one. I put the new belt on and it went on with very little persuasion. Started the motor and watched the new belt and realized it moved out one groove towards the edge of the hydraulic fan motor pulley.

I went to harbor freight and bought a magnetic angle finder. Took the new belt back off (very easy) and checked the angles according to your photos and the tensioner was off 3 degrees also. I removed the tensioner to inspect it and checked the bearings of the roller and everything looked good. The back edge of the fan pump pulley had some nicks in it so I used a small flat file to smooth the edge out and also to clean the rusted grooves on the big motor pulley. I added a small alignment washer to the pin as you recommended and found out the tensioner is harder to align due to the tension on the spring. The bolt comes out easy but the tensioner snaps back slightly and you have to compensate for this when putting it back on! I finally figured it out by getting the nut on the bolt started to hold the tensioner to the bracket, and then using a rubber strap wrench around the tensioner body to pull the pin into the alignment hole and then finish tightening up the nut. Whew!

Put the belt back on (very easy this time), checked for movement as suggested by brett (none), started the motor and the belt rode perfectly this time with very little movement from the tensioner.

Thanks to you guys for your great advice as I believe I have this potential big problem solved. Does anyone know the gates replacement number for the tensioner? My old one is a Dayco 3922900

Pierce...you are absolutely correct when being adamant about knowing about this belt and tensioner and how easy it is to change with a little practice. All of us need to no how to fix this. Big Karma for you buddy!

A simple inexpensive DIY fix as opposed to being stranded with disastrous results and possibly major bucks spent is a no brainer to me.

Re: Hydraulic pump fan belt need part number

Reply #17 – December 03, 2012, 10:42:49 pm

@Jerry Glad to help even if all I did was start the discussion!

see ya
ken

Re: Hydraulic pump fan belt need part number

Reply #18 – December 04, 2012, 01:01:10 am

Jerry,

After I lost the first one by the side of the road, it started me thinking but it really took a while to put all the little pieces together. I remembered the last owner of our U300 just happening to mention how they lost the belt at night and how long it took to get another belt (and the wrong one at that). All the sudden, I could follow back the engine loss on the ebay U300 Detroit I read about due to overheating in a tunnel. I could see the driver pushing the override button as not to block traffic. All from a bad belt and probably a tensioner out of alignment. The warning lights and gauge layout in relation to the steering wheel doesn't help either.

I lost mine in a driving rainstorm on the freeway. Other than getting wet, the change was no big deal but in the dark or in a spot where I could not have pulled off, it could have been really serious, both for the engine and the person outside changing it. Still, it took looking at the frayed edges on the second belt and watching how the tensioner jumped around with bad alignment before the last piece of the puzzle fell into place.

The MOST important spare to have onboard any coach with a hydraulic pump is the correct belt and knowing how to install it.

PM Bill Chaplin about the tensioner part number. Think he installed the latest and greatest HD Gates version on his U300.

Thanks for the "thumbs up". I have picked up many forum tips for solving issues from the roof spotlight to removing decals. Lots of good people here willing to share their solutions for mechanical/electrical problems along with passing on travel experiences and recommendations. Can't help but be a good year ahead!

Pierce

Re: Hydraulic pump fan belt need part number

Reply #19 – December 04, 2012, 06:12:00 am

Like to add, You want the Gates Belt, do not use a Dayco belt or any other will fit, too much bad experience with Dayco belts, sad to say that is what Cummins uses, so sad. Had a new Cummins engine break the belt within 2 hours, put a Gates on, Bingo no more problem in over five years.
FWIW
Dave M

Re: Hydraulic pump fan belt need part number

Reply #20 – December 04, 2012, 08:54:58 am

I would guess that all of us have had to change out a belt, especially the hydraulic pump belt while in a bad place. In my case I was on an Atlanta freeway with no shoulder and only a narrow gore. As luck would have it the PO had a spare belt that he left in the bay.
Its to late for me to learn at this point but I would like to suggest that if anyone has not had to change a belt that they do a practice run by changing one in your driveway where you are not in any danger as you would be on a highway.
If I was younger I think I would consider doing some kind of a maintenance class that would show newer owners how to do many of the things that can cost you in either breakdown or shop time. Probably could not make any money at it though.
SERIOUSLY, If anyone is near Atlanta and wants help with learning about their FT I welcome a call, I probably can't help with the newer sophisticated models but I would be willing to try.
Gary B

Affiliate Notice