Posted: Fri Aug 31, 2007 11:46 am Post subject: Fuel tank rattle
I had previously put some 1/8" rubber strips under the fuel tank when I installed it. But I still have a rattle at low idle. I have the tank back out at the present.
Is there any specific place according to a TM where the cushions are to be placed?
I'm just thinking about looking at the bottom of the tank and see where the high spots are and place the rubber strips there. _________________ Tropical Veteran
35th Inf. Reg. "CACTI" 4th I.D. VN
Amateur Radio K5XOM
Only the quantity and size of the strips is given. Placement should allow water to drain quickly and dry the area and placement should consider the uneveness of both the tank and the floor. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Ok thanks, I'll try again and see if I get it right this time. _________________ Tropical Veteran
35th Inf. Reg. "CACTI" 4th I.D. VN
Amateur Radio K5XOM
I RTVed the rubber strips to the bottom of the tank. Installed it. and tightened the hold down straps. started the motor. I don't have the rattle noise any more. What I am concerned with is the vibration. You can see it and feel it in the steering wheel. I put my hand on the motor and it appears to be smooth. Yet I can feel the vibration in the tub also.
One thing that I was not certain about, is when I installed the flywheel to the crank, I was not certain about how it was taken off. But like I said I don't feel any abnormal vibration in the motor. _________________ Tropical Veteran
35th Inf. Reg. "CACTI" 4th I.D. VN
Amateur Radio K5XOM
The rotating mass (flywheel, crank, rods & pistons) is dynamically balanced at the factory. If we disasemble these parts, and then not get them back the same way we disturb this balance. The only real solution is to dynamically balance the rotating mass at every overhaul. This can be expensive at some shops. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
With the flywheel having the two tapered dowel bolts. that tells me it can be fitted one of two positions. I suppose I could take out the bellhousing with transmission and all and rotate the flywheel 180 and see how that works out. _________________ Tropical Veteran
35th Inf. Reg. "CACTI" 4th I.D. VN
Amateur Radio K5XOM
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