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Bertram31.com General Bulletin Board
Re: ? for Bruce
Posted By: Vic Roy In Response To: Re: ? for Bruce (bruce)
Date: Tuesday, 13 September 2005, at 5:26 p.m.
John, I had the same problem with my little Volvo 4 banger diesels on my old B25. It had double sheave pulleys, but still ate up the belts real fast. Bruce is right, you have to get metric belts, but the angle on the Volvo and Yannie pullys is just wrong. Too shallow an angle and no matter what you do, they are gonna eat up. On the Volvos I finally took the belts off, ran the engines and polished up the grooves with emery cloth, then primed them and finished with 2 part epoxy paint. It helped some, but just buy belts by the gross is the only real answer.
Now as for the Cummins, the flat serpentine belt is the cat's meow. 2,000 hours, no adjustment (spring loaded idler pulley) and you can change them with no tools in 10 seconds. I looked at the QSB version and did not like the v-belt driven water pump. The knot head at the FLL booth finally admitted that since the QSB is electroncic controlled, they needed a place to tap the cam lobes for that, so they used the fuel lift pump hole, then needed a place for the feul lift pump, so used the gear driven raw water pump slot for that, so the raw water pump had to go on the otp front of the engine and be driven by a cheesy v-belt. It is not worthy of the Cummins engineering, but shoot, if they did not do it quick, EPA Tier 2 would put them out of business.
I suspect they will return the raw water pump to it's orignal gear driven slot, the fuel pump to it's origianl slot, and figure out another way to drive the electronics.
UV
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