Our friend from Amish country is correct. It's not a hydraulic issue.
You need to free up the star wheels on the adjusters and then do an initial set of the shoes via the adjuster.
You need a drum brake spoon and a flat screwdriver. You may be able to do it with a flat screwdriver.
This is a brake spoon.
There should be slots in the face of the drum or the bottom of the backer plate with plugs. Sometimes they were not knocked out so you get to drill and file the access slots.
This is a smaller axle but American cars all work pretty much the same way.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
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