Hi-Force JAH660C Manual - Page 2

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Hi-Force JAH660C Manual
TDS 1331
CHECKING THE OIL LEVEL.
The jacks are normally supplied filled and ready for use. However before
using the jack for the first time, the oil level should be checked. The oil used
should be a high quality hydraulic oil of HVI ISO32 viscosity, e.g. Hi-force
HFO32.
Remove the dipstick (See figure 1) and check the oil level. The maximum
level is marked on the dipstick. The level should be within 5mm of this mark.
The dipstick should be screwed fully into position to determine this level.
OPERATION OF JACK. See Figure 1.
Note: The permissible working load and stroke of the Jack are marked on the
side.
The Jack (1) has an in-built hydraulic pump which is worked by means of an
operating lever (2), under the control of the operator. The piston (3) is raised
on each downwards stroke of the lever. For lifting, the lever is placed fully into
the operating quadrant (4). Three positions are provided to enable the user to
choose the best ergonomic position. For lowering, the piston the lever is
removed from the quadrant and placed into the release screw (5). Turning this
anticlockwise will allow the piston to descend. The amount this is rotated will
control the speed of decent. Only open a very small amount (approx. 5°) at
first. Rotate clockwise, hand tight after use, to ready the jack for the next
operation.
0806