Sears red jack modification
Tourer
Joined: Jan 2014
Posts: 328
Likes: 16
From: Manassas, VA
I just scored one of these on craigslist so I am going to be doing this mod over the weekend. Just in time to do my spring fluid change, has anyone changed the hydraulic fluid in these yet? I was thinking it might be a good idea since I don't know how old this jack is.
Tourer
Joined: Apr 2009
Posts: 336
Likes: 9
From: Elk Grove, California
I changed mine a few years ago. I bought some hydraulic jack fluid from Harbor Freight Tools. I think I watched a YouTube video on changing the fluid and bleeding it as I can't remember how I did it. Can't say it made any difference and I can't even remember why I did it either.
Extreme HDF Member
Joined: Jun 2014
Posts: 11,448
Likes: 2,299
From: NW Ohio
I've got my dad's old Blackhawk service jack. I know for a fact that the fluid hasn't been changed in 40 years. If it makes ya feel good, go for it. Nothing to lose. I doubt it's necessary unless you go to use it and it won't pump up.
Grand HDF Member
Joined: Jul 2016
Posts: 4,384
Likes: 8,742
From: Texas
Just took some of this..., some of that - then threw it together - LOL
Bolts - 1/2"-13 X 7" - Qty 4
Nuts, locking - 1/2"-13 - Qty 4
Washers - 1/2" x 1 1/4 - Qty 16
Spacers - 1/2" x 1" L - 4
Angle iron - 1" x 1" X 9" L (I cut out the existing cross member w/ angle grinder - then installed this angle farther back to make room for the kick stand)
What you can't see - I cut 4 pieces of 1/2" pipe..., then installed them under the arms (two each side..., with the bolts going through) to give the arms more rigidity
Black krylon to paint the thing after I was done modifying
HTH
Ghost
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,758
From: Galt's Gulch - MI
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