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Old 06-26-2006, 04:45 PM   #1
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I wanted a set of spares to carry. The ISL has a Cummins serpentine belt & a Dayco brand air conditioner belt. A little internetting & I found
Planet Auto Parts had the stuff:
Serpentine = Dayco part no. 5080685, 8 rib, 1.09" wide, Metric No. 8PK1740, Effective Length 68.5", for $28.10. This is not an exact replacement for Cummins no. 3289224, the OEM belt, as it is "cogged" along the ribs and Cummins isn't, but it'll do fine as a spare if not for life.
Air Conditioner = Dayco part no. 17475, Metric no. 13A1205, and is an exact OEM replacement for $10.40. The hardest part of the R&R was retensioning the AC belt, until I used a 3" C-clamp to compress the lock bolt on the radius braclet toward the end of the radius bracket; then it was easy. I put the clamp in my travelling tool kit.
$45.58 w/the $7 shipping.
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Old 06-26-2006, 04:45 PM   #2
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I wanted a set of spares to carry. The ISL has a Cummins serpentine belt & a Dayco brand air conditioner belt. A little internetting & I found
Planet Auto Parts had the stuff:
Serpentine = Dayco part no. 5080685, 8 rib, 1.09" wide, Metric No. 8PK1740, Effective Length 68.5", for $28.10. This is not an exact replacement for Cummins no. 3289224, the OEM belt, as it is "cogged" along the ribs and Cummins isn't, but it'll do fine as a spare if not for life.
Air Conditioner = Dayco part no. 17475, Metric no. 13A1205, and is an exact OEM replacement for $10.40. The hardest part of the R&R was retensioning the AC belt, until I used a 3" C-clamp to compress the lock bolt on the radius braclet toward the end of the radius bracket; then it was easy. I put the clamp in my travelling tool kit.
$45.58 w/the $7 shipping.
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Old 06-26-2006, 04:50 PM   #3
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E Mike, that is a worth of information and dealing in some various v belts I can tell you the savings over going to the manufacturer is huge.
Thank you.
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Old 06-26-2006, 05:31 PM   #4
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Thanks Mike, I am going to place my order tonight. It will go in my spare parts kit along with the infamous charging relay.
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Old 06-26-2006, 07:46 PM   #5
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At my local Cummins dealer, Cal Pacific, they carry the Original Equipment brand which is Gates Rubber, and total cost for both was $33.45

Cummins being an English company probably wanted the keep the business close to home as Gates is English also.
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Old 06-27-2006, 04:00 PM   #6
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Also thanks EM: When I had my main belt changed last year I kept the old one. Now I can store a new one. I also lost the air cond. belt and don't have a spare.(yet)
I guess if I need to ask exactly what a 3" C clamp is I shouldn't put in my tool box. Is it a vice grip configuration?
Wayne: Inquiring minds need to know. What is the "infamous charging relay"?
Thanks guys
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Old 06-27-2006, 07:33 PM   #7
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Chris I should have said solenoid. The one that looks like a ford starter solenoid. It controls charging of the chassis and house batteries by tying the 2 banks together so they can be charged by alternator or shore/generator power.
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Old 06-27-2006, 07:40 PM   #8
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Search the Home Depot website for "C clamp". I would suggest you put it in your tool box even if you have to ask. They are cheap. You will find a use for it sooner or later. The vice grip model is different, but can serve many of the same purposes.
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Old 06-27-2006, 10:32 PM   #9
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Definition of a "C" clamp: tool for Engineer Mike to hold his <BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Big sweaty wad of money </div></BLOCKQUOTE>

See Maiden Voyage Check List for Engineer Mike's suggestion #9
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Old 06-28-2006, 08:24 AM   #10
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EM - I have read that panty hose can be used in place of the pully belt in an emergency.
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Old 06-28-2006, 10:17 AM   #11
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Htg3- I usually store my big sweaty wad of money in my pantyhose. I guess I could carry an extra C-clamp for the BSWM and free up the PH for use in a belt emergency?
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Old 06-28-2006, 10:25 AM   #12
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And the C-clamp can be adjusted easily as the BSWM is depleted.
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Old 05-09-2009, 02:19 PM   #13
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This post started with info for the pre-ULSD-only ISL replacement belts.

For 08+ rigs, the ISL uses a single serpentine belt to run everything (no separate A/C belt), which is an 8-rib x 77" belt. I ordered a spare from Ryder Fleet Products for <$40 delivered. It is probably also available from local Freightliner & Spartan service outlets and might be slightly cheaper on a cash & carry basis. 08+ belt is Dayco part number 5080770, Cummins part number 3973181, and Gates part# K080770. In a pinch, a 1" shorter belt might do (but I wouldn't recommend leaving these belts on as a replacement): Napa 25-080760 or 25-080760HD, Goodyear 4080760, Dayco 5080770, ACDelco or CarQuest K080760HD; these shorter belts might overstress the tensioner pulley if left on for a lot of miles, but should do if the 77" belt isn't available.

Ryder also has a wide variety of other truck parts, including disc brake pads, Haldex air brake parts (emergency brake actuator stuff), etc.
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