550 Question

[Grease Gun]

I have a 1983 550. On the dash panel, there is an indicator light on the right side that the parts manual calls a "filter bypass indicator". The light comes on sometimes from half throttle and up. Does anyone have any idea which filter is being bypassed? And what might be causing it? Thanks.

[B Town]

Air filter, I think

[gregjo1948]

Perhaps in needs cleaning or replacing due to too much air intake restriction.

[Grease Gun]

Thanks for the responses.

[77 Ford]

I thought that had to with the Hydraulics, basically telling you the filter was clogged up. I thought the air cleaner was covered under the air cleaner restriction which was more like the clear tube with with the reset button on the end.

On my 450c manual it says " A pressurized reservoir and spin-on hydraulic oil return filter are used on later unites> A filter bypass valve is used in the filter base and will bypass unfiltered oil to the reservoir if the filter becomes plugged. When the filter is plugged , an electrical filter restriction indicator will activate a light on the dash."

[B Town]

Thank you 77 Ford for posting the correct information. Hydrualic filter by pass.

[Grease Gun]

Thanks guys!

[77 Ford]

We are all in this together!

[HodgieMoggy]

Thanks for the info. My 555 was flashing the same light I changed the tranny filter but not the oil and it still comes on intermittently. Would that indicate that I should change the oil or do I have another issue.

[Grease Gun]

I changed my hydraulic filter over the weekend and that warning light is no longer flashing.