Part Numbers

Topic: Part Numbers (Read 1048 times) previous topic - next topic

Part Numbers

September 17, 2018, 02:23:26 pm

Looking for part numbers on two items for our '92 U225 Cummins B5.9 230 HP.

- Radiator Cooling Fan Clutch
- The V belt pulley that is attached to the AC unit

Have tried MOT and FOT and neither one has any information on this.

Thanks,

Jeff and Deb

Re: Part Numbers

Reply #1 – September 17, 2018, 02:26:43 pm

Re: Part Numbers

Reply #2 – September 17, 2018, 02:30:35 pm

Have you verified you do have a radiator fan CLUTCH (vs direct drive)?

On the V belt, remove and read the numbers/measure it.

Re: Part Numbers

Reply #3 – September 17, 2018, 02:50:30 pm

We were getting what appeared to be a screeching noise from a belt upon starting the engine. It would go on for 10-15 seconds or so. Took it to a repair shop in Norwalk, Ohio and they tested to see what was causing the problem. They removed the V belt to cancel out the AC compressor and belt tensioner and checked all pulleys and the alternator and found no issues. They also found once the fan fully engages, the noise goes away. Their recommendation was for a new fan clutch. They also recommended replacing the pulley mentioned.
They said it was fine to continue on to Mackinaw City, MI where we are for the next 11 days. I did noticed the engine temp sometimes goes up to 200+ and hovers around there. Other times will stay between 180 to 190 all day. Would like to order parts while up here so we can find a recommended service place on the way back down.

Re: Part Numbers

Reply #4 – September 17, 2018, 03:06:02 pm

Open the engine room (raise bed).

Feel/take picture of the fan hub.

Let us know what you find (solid vs clutched).

Re: Part Numbers

Reply #5 – September 17, 2018, 03:42:01 pm

The referenced pulley and fan pics.

Re: Part Numbers

Reply #6 – September 17, 2018, 03:45:55 pm

Also, any ideas where the ESN is located? Cummins Quickserve requires it and danged if I can find it :-)

Re: Part Numbers

Reply #7 – September 17, 2018, 04:07:08 pm

Did you grab the fan and try to rotate it? If it won't rotate, there is no clutch (which is what I suspect).

Find the dataplate on 6BT 5.9 Engines: The long narrow metal tag that is attached to the front cover/gear housing contains the dataplate information. If you have lost the tag, look on the left side of the block, when looking from the front of the engine, above the oil cooler housing.

Re: Part Numbers

Reply #8 – September 17, 2018, 04:17:55 pm

Looks like a solid fan,tensioner looks newer,could the serpentine belt be worn?

Re: Part Numbers

Reply #9 – September 17, 2018, 04:51:29 pm

If you/they have ruled out issues with the accessories/bearings:

Serpentine belt could be worn, or wrong length.

Or tensioner could be the wrong one.

Re: Part Numbers

Reply #10 – September 17, 2018, 10:27:33 pm

Progress and information update.

A little over 3 weeks ago we took her to a Cummins shop near Winchester, VA. They did the following:
- Oil and Filter change
- Fuel Filter change
- Steam Clean
- Water Pump replace
- Fan Drive Tensioner replace
- V Ribbed Cooling Belt replaced (Seems to be a ittle confusion on which belt the actually did replace

The Shortly after leaving VA, we noticed the belt noise upon starting. When we got to OH, a friend (a diesel mechanic instructor) recommended we take her to the place mentioned earlier.

They did find the the belt crossing the pulley pictured above had been over tightened. Two mechanics (including the senior mechanic) sat back on the engine having me periodically start the engine trying to find the cause of the noise periodically eliminating possibilities as noted above.

After about an hour of this, they finally came to the conclusion it was the fan clutch, especially since the noise would stop once the fan started moving 5-10 seconds after starting the engine. Since it was late on Friday, they wern't able to do any further repair.

So now, the complication, per Brett's instruction, I tried to turn the fan, but it didn't budge, indicating no fan clutch.

On the plus side, after some searching, contortions, and stretching, we did find the ESN.

Right now, the plan is to send some pictures to FOT, check with a Cummins shop about an hour down the road from us, and see what we can dig up based on our ESN discovery. As always, your help is both welcomed and appreciated.

Re: Part Numbers

Reply #11 – September 17, 2018, 11:03:49 pm

Steam clean can lead to problems. Fan belt tensioner looks off center, but idk much about this engine belt setup. Not an issue related to this problem, but you might try to find out if the KDP issue (killer dowel pin) has been addressed.

Re: Part Numbers

Reply #12 – September 18, 2018, 09:12:29 am

Quote from: Old phart phred – September 17, 2018, 11:03:49 pm

Steam clean can lead to problems. Fan belt tensioner looks off center, but idk much about this engine belt setup. Not an issue related to this problem, but you might try to find out if the KDP issue (killer dowel pin) has been addressed.

EXCELLENT EYES!

Yes, look at the second picture. The tensioner is not installed (air gap on right side of picture, tight on the other side, so it is not parallel with belt)-- likely the detent pin not in its hole.

Re: Part Numbers

Reply #13 – September 18, 2018, 10:29:15 am

Wondering if that might be a shadow from the flash on the right hand side. Will take another picture.

Didn't request the steam cleaning, not particularly happy finding it can cause problems. Thanks for the info on the KDP. Will get that checked.

Re: Part Numbers

Reply #14 – September 18, 2018, 12:08:54 pm

Should be an indicator parameter on the tensioner,if somehow you could look at that when it's running,any chance they saved
the old tensioner to match up?Would also find a way to clean the fan itself,looks pretty dirty.

Re: Part Numbers

Reply #15 – September 18, 2018, 01:14:27 pm

Better pictures of the tensioner and belt.

Sigh, will try to stretch a little further for the sake of a clean fan

Re: Part Numbers

Reply #16 – September 18, 2018, 01:32:12 pm

Looks like the v-belt is new and the serpentine is not.

Re: Part Numbers

Reply #17 – September 20, 2018, 11:27:16 am

Latest Update.

Had some mechanics recommended by the campground look at everything yesterday. Their diagnoses is that it is the AC compressor causing the problem. Their recommendation is to replace the compressor and the attached tensioner pulley for the AC compressor. (Note: the Ohio firm said they removed the V belt to cancel out the AC and tensioner and the screech was still there...of course they also said the problem was the non-existent fan clutch)

For future reference, did some checking and the AC compressor is Sanden Model 7409, Series SD 709 which uses R12. (Go to Sanden USA and enter 7409 for the Model#) According to the site, the 7409 has been "replaced by Aftermarket Version" Model #4663, Series SD7H51 which uses R134A.

Re: Part Numbers

Reply #18 – September 20, 2018, 11:40:27 am

Jeff,

Suggest they remove the A/C belt so that you will KNOW if the noise is related to the A/C compressor or its idler pulley.

Re: Part Numbers

Reply #19 – September 20, 2018, 11:45:47 am

Now sounds like the time to make a choice of repairing the AC or not.R-12 is virtually non-existent,so if you ever need any your screwed,R-134 will need a few more things besides the compressor.

Re: Part Numbers

Reply #20 – September 20, 2018, 11:55:28 am

Will do Brett. Good point John.

Another thing they mentioned is that the water pump, ostensibly replaced cummins, didn't look new, although they did say it could have been sitting on the shelf for a long time.

They further said that the wrong radiator hose is in place indicating it is a corrugated type and is rubbing on another part of the coach. They are recommending a fabricated pipe using rubber connectors like the ones they use on the big rigs.

Still trying to ID the AC Tensioner Pulley. Meanwhile, here are pictures of the old and new AC compressors.

Re: Part Numbers

Reply #21 – September 20, 2018, 12:06:09 pm

Many idler pulleys have an easily replaceable bearing. With the A/C belt removed, very easy to spin the pulley to check for play or bearing roughness.

Picture of the radiator hose that interferes/touches a part of the coach?

Re: Part Numbers

Reply #22 – September 20, 2018, 12:16:59 pm

In picture 3523,looks like there is a clamp that came loose,not sure but think you have to change the expansion valve to convert
to 134.Maybe someone with the same engine can chime in about the corrogated hose.

Re: Part Numbers

Reply #23 – September 20, 2018, 12:21:19 pm

Quote from: John44 – September 20, 2018, 12:16:59 pm

In picture 3523,looks like there is a clamp that came loose

Ya, looks like a bracket that was there to locate the coolant pipe.

Re: Part Numbers

Reply #24 – September 20, 2018, 03:52:20 pm

Yes, there is a clamp of some type where part of it appears to have broken off. No idea what it's purpose is. Will get a better picture of it.

Will probably defer the picture of the coolant hose until tomorrow. Heavy rain today.

While taking some picture of the AC compressor today (with the bed up), had a small visitor try to help me out. A squirrel jumped up into the engine and decided to see what was going going on. Fortunately, he decided to go back out the way he came rather than exiting into the coach and making Deb scream.

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