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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

American Bosch PSB

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john r brooks

08-05-2020 14:48:06

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Hello I would like to ask a very perplexing question but firstly l hope everyone is safe from the virus, we are under a lockdown in Melbourne only one person can leave the house and then only travel 5km for essential shopping.
Dieseltech has been helping me sort out my Oliver 55 injection pump, l may have exhausted him it is hard fixing things over the internet with a novice! My pump is timed internally correct and l ran a gravity feed fuel test to check. The metering sleeve is free and the plunger rises up when the hub marks are bang on but the fuel doesn't shut off. In fact the fuel begins to flow when the hub marks align for port 1.This happens whether the metering sleeve is up or down. The marker plate aligns when the hub spline aligns withe CLW mark so it hasn't slipped .
Question is how can this be?
Regards John

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08-05-2020 17:56:44

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 Re: American Bosch PSB in reply to john r brooks, 08-05-2020 14:48:06  
Either head is installed wrong, or guide GU 903 is broken, or head has the wrong plunger drive gear. Something has changed IF it ran before the internal leak was repaired.

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john r brooks

08-06-2020 04:46:15

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 Re: American Bosch PSB in reply to Dieseltech, 08-05-2020 17:56:44  
Thank you again. I will follow up your suggestions.

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