Manually Turning Engine Over
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Junior User
Joined: Dec 2014
Posts: 54
Likes: 0
From: Lynnwood, Wa
Manually Turning Engine Over
Hey all, In the process of changing out my lift pump. Was told to manually turn the engine with a 15/16 ratchet. When turning it spun the belt at first but then just spun the wheel on the alternator without turning the belt. anyways, so i turned a couple more times to try to get it to spin but nothing happened so i just proceeded to remove the pump. Didn't lose the tappet but was wondering if turning the alternator manually could mess anything up. Thanks!
Laughing Gas
Joined: Feb 2014
Posts: 774
Likes: 25
From: Reno, Nevada
Nah, turning the alternator manually won't hurt anything. You can sometimes turn a gasoline engine by rotating the alternator pulley, but Diesels have too much compression and, like is mentioned above, you have to turn the crankshaft pulley in order to rotate the engine.
You got the pump and tappet out OK, that's what counts.
You got the pump and tappet out OK, that's what counts.
Thread Starter
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Junior User
Joined: Dec 2014
Posts: 54
Likes: 0
From: Lynnwood, Wa
Ah ok. Yeah i was just following what this guy does in his video. That makes sense though. Yeah, getting the pump out was pretty smooth actually. Didn't need much persuasion. Truck started up just fine too. Thanks for the replies gents.
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