Columbus JACK/Regent
2222 S. Third St., Columbus, Ohio 43207-2402 USA
MODEL 179D1100-56
50 TON ALLIGATOR AXLE JACK
PAGE -5-
TROUBLE SHOOTING CHART
TROUBLE PROBABLE
CAUSE REMEDY
Rams will not support load.
Oil leaks at rams.
Remove first, second and third
stage rams. Remove and
inspect O-rings and backup
rings and replace if necessary.
Defective pump assembly ‘O’
rings.
Remove pump assemblies.
Remove and inpsect hand
pump piston o-rings and
replace if necessary.
Defective outlet check valve.
Remove and inspect spring
and steel ball. Replace if
necessary.
Loose pump assembly.
Tighten captive socket head
screw.
Rams rise and fall with each
stroke.
Valve body partially open.
Using slotted pump handle,
adjust valve body clockwise
until tight.
Incorrect setting of relief valve.
Adjust set screw clockwise to
increase system relief
pressure.
Defective outlet check valve.
Remove pump assemblies.
Remove and inspect spring
and steel ball. Replace if
necessary.
