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Post by lund66 on Feb 11, 2004 0:47:46 GMT -5
I hope u can help me i was wondering why my sled is just eating up the lower chaincase sprocket.
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Post by Ryan Hausladen on Feb 11, 2004 8:56:56 GMT -5
sounds to me like you have a worn out driveshaft bearing, casuing the shaft to not turn true and eating your sprocket.
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Post by lund66 on Feb 11, 2004 14:28:08 GMT -5
How would I be able to tell if the driveshaft bearings are worn out? would the shaft be loose or what?
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Post by Ryan Hausladen on Feb 11, 2004 20:38:18 GMT -5
tip snowmobile on its side and pull track with hands, you should be able to tell by pullig on track if soemthign is wrong.
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Post by lund66 on Feb 13, 2004 10:59:19 GMT -5
I did what you said and there doesn't seem to be any bearing damage. I even was able to grab the drive shaft, but there was no movement on either side. I did notice that the shaft moved from side to side alot more than a 1/2 inch I'd say. Should there be that much play and could that be the problem.
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Post by Ryan Hausladen on Feb 13, 2004 12:18:55 GMT -5
ok, it sounds like you may be missing something in your chaincase, there should be a little metal trincket/collar deal behind lower gear, it sounds more to me now that your gears are not aligned properly causing excessive wear, and if that piece is missing behind sprocket it will caused riveshaft to move back and forth, also make sure your chaincase has oil in.
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Post by lund66 on Feb 15, 2004 23:33:38 GMT -5
Thanks for all of your help. found the problem. I put the old upper and lower sprockets back on to check the alignment and I noticed that the lower sprocket bearing moved ever so slightly. will the drive shaft come out with out removing the track, and can I replace the lower sprocket with a 40 toother? the old one was a 37 toother.I bought that 40 toother from a place in NY still in the JD package. Thanks again
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Post by Ryan Hausladen on Feb 16, 2004 22:32:07 GMT -5
if you use the 40 tooth gear you will have to add links to the chain.
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Post by lund66 on Feb 26, 2004 0:21:57 GMT -5
I tried to get the specs for a 73 JDX8 off your specs page but couldn't get them to come up. I was wondering if there is a waay i could get them.
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Post by Ryan Hausladen on Feb 26, 2004 6:51:54 GMT -5
TEXT 1973 JDX8 Engine Manufacturer: CCW Model: KEC 440/21 No. Of Cylinders: 2 Bore: 66mm Stroke: 64mm Displacement: 438cc Horsepower SAE J245 Hp Rating: 38 @ 6750 rpm SAE J607 Hp Rating: 40 @ 6750 rpm Fuel System Carburetor Mfg.: Walbro Model: WDA-34 Tank Capacity: 5.50 U.S. Gal. Fuel Mixing Ratio: 50:1 Chassis and Body Material Tunnel and pan: Aluminum Hood and Console: Polyester Windshield: Polycarbonate Overall Length: 103.4 in. Overall Width: 35.5 in. Overall Height: 40 in. Weight (lbs): 386 Track and Suspension Suspension Type: Trailing Arm Bogie No. of Bogie Wheels: 15 Track Material: Polyurethane Tack Width: 15.5 in. Power Train Transmission Type: 2 Sheave Variable Manufacturer: Salsbury Model: 850 Final Drive Ratio Standard: 2.05:1 Optional: 2.44:1, 2.44:1 Brake: External Band Drive Belt: M63912 Electrical System Spark Plug Gap: 0.020 in. Timing: 10* BTDC (Retarded) Lighting Coil Capacity: 120 Watt Light Bulbs Headlight: 4000 (AM52309), 4002 or 4040 Stop- Taillight: 1157 (AM52305) Speedometer: 1816 (AT22970) Tachometer: 1816 (AT22970) Battery (Electric Start): AM52050 |
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