3
SPECIFICATIONS
INSTALLATION
OPERATION
Adding Fluid
Raising the Load
Removing Air
Model No.
Capacity
Tons
Stroke
in (cm)
Effective Area
in
2
(cm
2
)
Collapsed Height
in (cm)
JH-1 .5
1 .5
5 .19 (13 .2)
0 .69 (4 .45)
7 .50 (19 .1)
JHL-1 .5
1 .5
18 .00 (45 .72)
0 .69 (4 .45)
21 .72 (55 .17)
JH-3
3
5 .88 (14 .9)
1 .23 (7 .94)
8 .75 (22 .2)
JHL-3
3
20 .00 (50 .80)
1 .23 (7 .94)
26 .31 (66 .83)
JH-5
5
6 .25 (15 .9)
1 .87 (12 .1)
9 .50 (24 .1)
JH-8
8
6 .25 (15 .9)
1 .87 (12 .1)
9 .50 (24 .1)
JH-12
12
5 .13 (13 .0)
3 .28 (21 .2)
8 .88 (22 .6)
JH-20
20
6 .50 (16 .5)
5 .16 (33 .3)
11 .00 (27 .94)
JH-306
30
6 .13 (16 .0)
5 .94 (38 .3)
10 .00 (25 .40)
JH-506
50
6 .09 (15 .5)
9 .62 (62 .1)
10 .25 (26 .04)
JH-1006
100
6 .06 (15 .4)
20 .63 (133 .1)
11 .31 (28 .73)
WARNING
Before adding fluid, make sure the plunger is fully retracted, or the system will
contain more fluid than the reservoir can hold.
1 . Use wrench end of jack handle to open release valve by turning counter-clockwise .
2 . Place jack on its side with fill plug facing up . Remove fill plug .
3 . Slowly add Enerpac hydraulic fluid . Do not fill reservoir completely . Fluid level should be below fill
plug when jack is upright .
4 . Stand jack upright, allowing excess fluid to run out of fill plug hole . Replace fill plug . Clean off excess fluid .
Check load rating on jack nameplate to make certain the jack is capable of lifing the load . Use a
gauge to monitor the load . Gauge adaptor kits are available for 20,30, 50 and 100 ton jacks . Use
gauge kit GF20L for JH-20 models, and gauge kit GF325 for JH-306, JH-506, and JH-1006 models .
1 . On 30 - 100 ton models, open air vent .
2 . Use wrench end of handle to close the release valve by turning clockwise hand tight .
CAUTION
Excessive tightening is unnecessary and will cause wear.
3 . Insert handle into jack pump beam and pump until desired height is reached .
NOTE:
For 50 to 100 Ton jacks, use speed (A) pump beam until plunger reaches
load . Then move the handle to load (B) pump beam to lift the load .
1 . On 30 - 100 Ton models, open air vent .
2 . Use wrench end of jack handle to open release valve by turning counter-clockwise .
3 . Insert jack handle into jack pump beam and rapidly pump the handle .
4 . Use wrench end of jack handle to close release valve by turning clockwise .
5 . If jack operation is not smooth, repeat the air removal procedure .
A
B
Enerpac JH Series Jacks
These products conform with the
requirements for CE Marking .
