Thank you all for your prompt responses and support. The O rings for the master cylinder came in the post yesterday. The remaining question I have is do I need to remove the fuel tank to access the master cylinder or can it be dis-assembled as needed from the top? Seems rather a stupid question inasmuch as the resevoir is in the way but then I'm asking the experts! When I took the wheel brake calipers apart I noticed to my surprise that the wear on the brake pads was minimal so I didn't replace the pads. The O rings, however, were gummy and sticky. There was some grit in the space behind the pucks but most noteworthy was a brown sediment that was quite hard that had filled the gap for the O ring on the pressure side of the gap. I had to use a knife edge to scrape this sediment out of the gap. For the record I used a motor cycle/ATV lift with additional structure and proper padding to lift the landing gear bow from the center. This raised both wheels enough that they and the brake calipers could be removed. Overnight I put the wheel axles back in and used auto jacks under each wheel axle and the center lift for three point support to secure the aircraft against forecast winds. Best Regards Kurt
---------- Forwarded message --------- From: Ian Williams <i...@agcon.co.nz> Date: Mon, Jan 4, 2021 at 6:39 PM Subject: Re: [DOG mailing list] Brake fluid To: <dog@lists.riverland.net.au> Gidday Kurt, I may be able to shed some light there. Not sure if yr H36 is ex Thai but military tend to ignore any manufacturers type certificate, Plus the normal brake fluid they use is the aircraft stuff. So dot4 is of course automotive. It does sound as if U will need to replace all the seals. As Rob said the brakes themselves are Cleveland replacement seals should be easy to get. Not sure about the master cyl tho Best regards Ian Williams Sent from my iPhone > On 5/01/2021, at 2:17 PM, Kurt Redinbaugh <redinbau...@gmail.com> wrote: > > Thank You Rob for your prompt response on my brake caliper question. > I am a bit confused though... > On pp44 of the HOFFMANN AIRCRAFT "instructions for continued airworthiness" it emphatically states that DOT 3 brake fluid is used and that MIL-5606 is NOT to be used. My brake reservoir had a red tint to it when I put S/N 3660 back into service after 12 years as a hangar queen. Last week I had a leak that drained the reservoir full of DOT 3. The airplane is tied down on the ramp at the Reno-Stead airfield and is completely covered. The weather has been freeze-thaw cycles lately. The DOT fluid I used was fresh and stored in a factory sealed container. I have ordered O ring number 101-02300 from Aircraft Spruce to replace the failed seal in the caliper. > I have seen in the DOG that MIL-5606 fluid is to be used. Is there an explanation for this seeming contradiction? > As always thanks for your support > Kurt --------------------------------------------------------------------- You are subscribed to the Dimona Owners Group mailing list. This list is archived in public. http://waikeriegliding.com/dog/ To unsubscribe, send email to: dog-unsubscr...@lists.riverland.net.au
