jimtruck Posted May 23, 2019 Share Posted May 23, 2019 '83 R686 with a E6-300. When driving and trying to maintain a constant speed, say 50mph, the engine is constantly "hunting" or surging. Linkage/ Throttle arm look good and feel ok. I removed the governor assembly from the pump and disassembled it, nothing seemed abnormal or wore out. Is there anything in particular i should look for? The gear that drives the governor has what looks to be a slip clutch on it, What is the proper way to set it? The truck idles ok and pulls good with plenty of power, its just hard to drive due to the surging and it gets worse with light to no load on the engine. The pump is an American Bosch type APE6bb110T6978. Thanks, Jim Quote Link to comment https://www.bigmacktrucks.com/topic/57338-american-bosch-governor-questions/ Share on other sites More sharing options...
Rob Posted May 23, 2019 Share Posted May 23, 2019 7 hours ago, jimtruck said: '83 R686 with a e6-300. When driving and trying to maintain a constant speed, say 50mph, the engine is constantly "hunting" or surging. Linkage/ Throttle arm look good and feel ok. I removed the governor assembly from the pump and disassembled it, nothing seemed abnormal or wore out. Is there anything in particular i should look for? The gear that drives the governor has what looks to be a slip clutch on it, What is the proper way to set it? The truck idles ok and pulls good with plenty of power, its just hard to drive due to the surging and it gets worse with light to no load on the engine. The pump is an American Bosch type APE6bb110T6978. Thanks, Jim Needs to go to a pump shop for calibration. Usually pins and bushing wear causes that along with spring pressure. It's a balancing act inside the governor and everything has to be closely aligned. Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/57338-american-bosch-governor-questions/#findComment-423475 Share on other sites More sharing options...
fjh Posted May 23, 2019 Share Posted May 23, 2019 2 hours ago, Rob said: Needs to go to a pump shop for calibration. Usually pins and bushing wear causes that along with spring pressure. It's a balancing act inside the governor and everything has to be closely aligned. There is one simple thing to check before you go ripping the pump off for repair ask Rob has stated! Check to be sure the throttle lever isn't worn at the spring in the lever its self! this being worn can cause issues at idle as well just something cheap and easy to check before going all out! Just something else to look for! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/57338-american-bosch-governor-questions/#findComment-423489 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.