Yep, I think you're doing it wrong. It looks like there's supposed to be some air in the unit. My '64 182 has what remains of a sticker on the shimmy damper. Referencing the parts catalog, near the front, there's a section showing all the placards on the aircraft. Sure enough, there's the placard for the shimmer damper. It says - "Fill with 74 cc of MIL-H-5606 hydraulic fluid at room temperature. This will allow correct airspace for fluid expansion. Do not overfill." So it looks like you need to start over or your unit could rupture from expansion pressure. Per the FAA, when you work on an aircraft, you're supposed to be in possession of/familiar with appropriate technical data. I think you need to keep that in mind. Dynetric - A&P, IA, Atlanta
Very interesting. Obviously I’m working from the service manual (not shown, but on the table next to me) and it specifically states “The shimmy dampener must be filled completely with hydraulic fluid, free of entrapped air with the compensating piston bottomed in the piston rod. Before servicing the shimmy dampen-er, ascertain that the compensating piston is bottomed in the piston rod.” I have noticed that Cessna (and other manufacturers)maintenance instructions tend to very by year or model. Nonetheless, this item was removed from service and replaced with a modern unit from McFarlane.
💜shimmy damper💜
Very interesting!
Great idea!
So, mine specifies 85 cc of fluid, leaving enough air to prevent damage when the fluid expands when it heats up inside the cowling.
That’s very good info, what year is it?
Yep, I think you're doing it wrong. It looks like there's supposed to be some air in the unit. My '64 182 has what remains of a sticker on the shimmy damper. Referencing the parts catalog, near the front, there's a section showing all the placards on the aircraft. Sure enough, there's the placard for the shimmer damper. It says - "Fill with 74 cc of MIL-H-5606 hydraulic fluid at room temperature. This will allow correct airspace for fluid expansion. Do not overfill." So it looks like you need to start over or your unit could rupture from expansion pressure. Per the FAA, when you work on an aircraft, you're supposed to be in possession of/familiar with appropriate technical data. I think you need to keep that in mind. Dynetric - A&P, IA, Atlanta
Very interesting. Obviously I’m working from the service manual (not shown, but on the table next to me) and it specifically states “The shimmy dampener must be filled completely with hydraulic fluid, free of entrapped air with the compensating piston bottomed in the piston rod. Before servicing the shimmy dampen-er, ascertain that the compensating piston is bottomed in the piston rod.”
I have noticed that Cessna (and other manufacturers)maintenance instructions tend to very by year or model.
Nonetheless, this item was removed from service and replaced with a modern unit from McFarlane.