jinman
Rest in Peace
- Joined
- Feb 23, 2001
- Messages
- 20,387
- Location
- Texas - Wise County - Sunset
- Tractor
- NHTC45D, NH LB75B, Ford Jubilee
Jaymar, all I have to add is to make sure the noise is for sure the engine. On HST model tractors, there is a ball checkvalve on top of the HST filter. When the tractor is cold and at low rpm, the ball checkvalve can rattle and tick due to surging fluid. If it is that ball checkvalve, the noise should go away when you rev the engine because fluid flow is constant. Also, you can listen to the top of the filter assy with a stethoscope around the ball checkvalve to hear specific sounds. If you don't have an HST tractor or you are sure the sound is coming from the engine, then this is not possible, but if you have an HST transmission, it is worth a check. The rattling of the checkvalve on tractors with HST is just something that we all get used to.