Re: 2001 10k generator belt Reply #50 – March 11, 2023, 10:17:24 am Quote from: dsd – September 15, 2022, 09:23:05 amAs i recall the Napa belt was tighter fitting. A permanent adjuster is still going to happen eventually, but hasnt happened yet. Generator is running as we speak. Lol too many other projects but its on the fix list along with soundproofingScottHow were you able to get the Napa 25-7300 belt onto the pulleys Scott? Did you take the side panel off? Ive seen videos of reinstalling v-belts with a screw driver while the engine is running.....im not brave enough to try that. Quote Selected
Re: 2001 10k generator belt Reply #51 – March 11, 2023, 10:35:59 am Quote from: evantwheeler – March 11, 2023, 10:15:03 amFighting this now. Removed broken broken napa 25-7300 from the housing and cannot figure put how it is possible to install new belt. Have a 10k powertec with the kubota engine. Crank pulley and water pump pulley, no tensioner or other belt adjustments available just like Scott reported. Have scoured the internet for a how to on re-installing this belt with no solutions. Have removed the water pump pulley and there is just no way to get it back in place with the tension required to stretch the belt. Pierce's suggestion of a longer stud to reinstall the WP pulley is a great idea, sounds like i need to find a slightly longer belt....So I've had good service with the last belt I installed. No tensioner. I'm planning when I reinsulate the box build a tensioner that can be installed to resolve problem. I'll make several at that time. Tensioner or adjustable pulley would resolve this issue. Too many other issues to resolve now. My concern is if it's too tight it will damage water pump bearings. Just rolled up on pulley and rotated engine drive pulley with tool till installed with front screwed on panel removed. The side is a pain to removeScott Quote Selected
Re: 2001 10k generator belt Reply #52 – March 11, 2023, 10:59:43 am Sometime in the past I worked on something that had a split pulley and shims between the sides to remove to make the belt tighter. Might have even been a go cart. My memory doesn't hold everything I have done. Quote Selected
Re: 2001 10k generator belt Reply #53 – March 11, 2023, 11:01:56 am Quote from: craneman – March 11, 2023, 10:59:43 amSometime in the past I worked on something that had a split pulley and shims between the sides to remove to make the belt tighter. Might have even been a go cart. My memory doesn't hold everything I have done.Air cooled VW air cooled engine generators!That system worked very well.And, recently saw a "20 something" replace the belt and threw away the shims. Quote Selected 2 Likes
Re: 2001 10k generator belt Reply #54 – March 11, 2023, 11:09:51 am Quote from: evantwheeler – March 11, 2023, 10:15:03 amFighting this now. Removed broken broken napa 25-7300 from the housing and cannot figure put how it is possible to install new belt. Have a 10k powertec with the kubota engine. Crank pulley and water pump pulley, no tensioner or other belt adjustments available just like Scott reported. Have scoured the internet for a how to on re-installing this belt with no solutions. Have removed the water pump pulley and there is just no way to get it back in place with the tension required to stretch the belt. Pierce's suggestion of a longer stud to reinstall the WP pulley is a great idea, sounds like i need to find a slightly longer belt....Can't imagine the belt breaking unless it was too tight. Also can't believe it's been three years. The loose belt will allow a little slippage and on a water pump it will probably be fine. It really doesn't need much HP to turn it compared to a alternator Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #55 – March 11, 2023, 11:32:11 am Quote from: wolfe10 – March 11, 2023, 11:01:56 amAir cooled VW air cooled engine generators!That system worked very well.And, recently saw a "20 something" replace the belt and threw away the shims.Thanks Brett, I had forgot the Beetles I worked on as an auto mechanic. Quote Selected
Re: 2001 10k generator belt Reply #56 – March 11, 2023, 12:06:09 pm Quote from: dsd – March 11, 2023, 10:35:59 amSo I've had good service with the last belt I installed. No tensioner. I'm planning when I reinsulate the box build a tensioner that can be installed to resolve problem. I'll make several at that time. Tensioner or adjustable pulley would resolve this issue. Too many other issues to resolve now. My concern is if it's too tight it will damage water pump bearings. Just rolled up on pulley and rotated engine drive pulley with tool till installed with front screwed on panel removed. The side is a pain to removeScottSo it looks like you ended up with the Autozone 15305 and that is what has served you well since this thread originated? My belt didnt fully "break", but the rubber deteriorated so badly it is breaking off in chunks. Rubber is rock hard and cracking. Unsure how long it has been installed.I dont see how it is possible to install the current version of the napa 25-7300.I will pickup one of the autozone belts and give it a try. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #57 – March 12, 2023, 09:51:28 am Quote from: evantwheeler – March 11, 2023, 12:06:09 pmSo it looks like you ended up with the Autozone 15305 and that is what has served you well since this thread originated? My belt didnt fully "break", but the rubber deteriorated so badly it is breaking off in chunks. Rubber is rock hard and cracking. Unsure how long it has been installed.I dont see how it is possible to install the current version of the napa 25-7300.I will pickup one of the autozone belts and give it a try.Reply #38 showed the autozone relaxed too much. I'll look at it on Tuesday to see what is currently installed. All I remember is it pissed me off being so simple yet unresolveable. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #58 – March 12, 2023, 07:43:51 pm You can loosen the bolts on the water pump pulley so that it will relax enough to get the belt on and then tighten them up. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #59 – March 13, 2023, 07:27:58 pm Quote from: red tractor – March 12, 2023, 07:43:51 pmYou can loosen the bolts on the water pump pulley so that it will relax enough to get the belt on and then tighten them up. .....if you have the correct length belt to do so, I suspect this is the case. The current version available of Napa's 25-7300 belt is nowhere near long enough for this to be possible. The pulley is still 1/4" or so too short on each leg of the belt from being able to go back over the water pump hub after fully removing the pulley from the hub and installing the belt over the crank pulley and the loose water pump pulley. Quote Selected
Re: 2001 10k generator belt Reply #60 – March 13, 2023, 07:28:38 pm Quote from: dsd – March 12, 2023, 09:51:28 amReply #38 showed the autozone relaxed too much. I'll look at it on Tuesday to see what is currently installed. All I remember is it pissed me off being so simple yet unresolveable. Thanks Scott. Quote Selected
Re: 2001 10k generator belt Reply #61 – March 23, 2023, 09:45:23 pm Gates 7305 fit perfect for me. Bought one from Oreilly for $22, same NAPA branded belt cost $33, but I have a backup now. Installation required removal of 3 bolts from the water pump pulley, and some loosening of the 4th bolt about 3/4 of the way to full removal. This allowed me to wrap the belt on the crank pulley, and start it on the water pump pulley. I was able to grab the belt & water pump pulley together and rotate them slowly, which also rotated the crank pulley. This walked the belt onto the water pump pulley. Once the belt was on the water pump pulley, I slowly tightened up the single bolt still installed and re-centered the pulley on the water pump hub. I reinstalled the other 3 bolts and then snugged everything up. In my opinion the belt is more than tight enough, I have zero concerns of slippage or need for a tensioner. Hope this all helps someone in the future.I should add - Powertech 10kW generator with Kubota engine. 2000 U320 coach. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #62 – December 07, 2023, 04:19:10 pm Just to add to the water pump pulley belt issue. On the 4cyl Kubota in my 2001 U320..... I just finished rebuilding my generator pan, replacing the vibration mounts(all new H2O pump/&hoses and the burnt up switch in the GCU. The head scratcher was the damn belt! Bought two Gates 7305XL (which was the old one I'm replacing) BOTH new ones were too loose! After MUCH time scouring the forms and the Internet, I came up with a Dayco 15305 belt. It was tight, and with the aide of a pry bar ... viola! Hope this helps those with the same issue. Quote Selected
Re: 2001 10k generator belt Reply #63 – December 07, 2023, 04:25:14 pm James,Can you verify that the "shorter" belt is not over-tensioning?Easy to pull bearing out of driven accessories with too much belt tension.Bar-tight "ain't rite". Quote Selected 2 Likes
Re: 2001 10k generator belt Reply #64 – December 07, 2023, 05:58:00 pm Brett.. though the belt is tight... I can still give a squeeze with my two fingers on each side pinching inward and the belt moves. It's definitely not banjo tight or even close. I needed the bar to help install, as I was putting it on with only the top of the cowling removed. Would have been a bit easier if all of cowling (box) was not installed. Quote Selected
Re: 2001 10k generator belt Reply #65 – December 07, 2023, 07:41:33 pm Quote from: James Bock – December 07, 2023, 04:19:10 pmJust to add to the water pump pulley belt issue. On the 4cyl Kubota in my 2001 U320..... I just finished rebuilding my generator pan, replacing the vibration mounts(all new H2O pump/&hoses and the burnt up switch in the GCU. The head scratcher was the damn belt! Bought two Gates 7305XL (which was the old one I'm replacing) BOTH new ones were too loose! After MUCH time scouring the forms and the Internet, I came up with a Dayco 15305 belt. It was tight, and with the aide of a pry bar ... viola! Hope this helps those with the same issue. 2003 U320, Power Tech (Kubota):Napa or Gates 7300, Kubota 14911-97010 Quote Selected
Re: 2001 10k generator belt Reply #66 – December 07, 2023, 10:09:39 pm Quote from: James Bock – December 07, 2023, 04:19:10 pmJust to add to the water pump pulley belt issue. On the 4cyl Kubota in my 2001 U320..... I just finished rebuilding my generator pan, replacing the vibration mounts(all new H2O pump/&hoses and the burnt up switch in the GCU. The head scratcher was the damn belt! Bought two Gates 7305XL (which was the old one I'm replacing) BOTH new ones were too loose! After MUCH time scouring the forms and the Internet, I came up with a Dayco 15305 belt. It was tight, and with the aide of a pry bar ... viola! Hope this helps those with the same issue. James,Glad you finally got it done and back together. I know we've spoke on it a few times. Cannot explain at all why a 7305 worked perfect for my application and wouldn't work for yours....mine was not very tight at all, but also not sloppy loose, and it really does not take much tension at all to keep that water pump turning...I have two kubota tractors, one 12 years old, another under a year, bit have quite loose belts, and other than they do have an alternator, same identical setups that these gens have.I might add, the belt had to be installed to the Wp pulley first, then bolt the pulley to the pump. Was too tight to force on..As you followed my lead on my rebuild, curious to see pics on how yours turned out.Mike. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #67 – December 08, 2023, 06:44:53 am Here's a pic of the New gates 7305xl, which was an exact replacement of what came off..... loose as a goose Mike, this weekend the genny goes back into the nose, then put the rest back together...... fingers crossed, everything goes smoothly. Quote Selected
Re: 2001 10k generator belt Reply #68 – December 08, 2023, 07:46:33 am Wow-- that one isn't even close.Wonder if that "too long" belt was mislabeled.Gates belts are usually a top choice. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #69 – December 08, 2023, 07:56:12 am Quote from: James Bock – December 08, 2023, 06:44:53 amHere's a pic of the New gates 7305xl, which was an exact replacement of what came off..... loose as a goose Mike, this weekend the genny goes back into the nose, then put the rest back together...... fingers crossed, everything goes smoothly. Where is the idler???Chris Quote Selected
Re: 2001 10k generator belt Reply #70 – December 08, 2023, 08:00:05 am Those with the Isuzu engine- I removed the 4bolts on the pump pulley. Installed the new belt and replaced the pulley. No idler on this engine. Quote Selected 1 Likes
Re: 2001 10k generator belt Reply #71 – December 08, 2023, 08:21:46 am Quote from: erniee – December 08, 2023, 08:00:05 amThose with the Isuzu engine- I removed the 4bolts on the pump pulley. Installed the new belt and replaced the pulley. No idler on this engine.Correct-- no idler.And, yes, removing or at least loosening the bolts on the water pump pulley is easier on the belt than "popping it" over the pulley.A little like the old VW air cooled engines, except they used shims between the pulley halves to allow for proper tension (more shims and the belt rode a little lower on the pulley). A very simple and very time tested means of adjusting belt tension.Any chance there ARE shims/spacers between the water pump pulley halves??? Quote Selected
Re: 2001 10k generator belt Reply #72 – December 08, 2023, 08:30:59 am I have the isuzu engine and it has a idler in the empty hole on right side of pictureChris Quote Selected
Re: 2001 10k generator belt Reply #73 – December 08, 2023, 09:17:25 am Quote from: wolfe10 – December 08, 2023, 07:46:33 amWow-- that one isn't even close.Wonder if that "too long" belt was mislabeled.Gates belts are usually a top choice.Brett, I bought two of the exact same Gates brand and both were the exact same. Too long. Yes no pulley tensioner on this Kubota V1505 4cyl. I thought about designing and making my own where an alternator would go, but the time involved wasn't worth it. Quote Selected
Re: 2001 10k generator belt Reply #74 – December 08, 2023, 09:21:29 am Nothing wrong with a "no idler" arrangement with just the two pulleys. Again, that arrangement worked just fine for many millions of miles on the air cooled VW's.The shims that allow the belt to ride higher/lower in the upper pulley was very simple and effective. Quote Selected 1 Likes
Topic: 2001 10k generator belt