Kenworth T410, Driver'S Handbook Manual

Page: 276 / 418

Page 250 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
2. To maximise the lifting height, unscrew the extension screw/head
cap to the required height.
3. Insert the handle into the handle sleeve. Check that the handle or
any part of your hand or arm does not come into contact with the
vehicle when the handle is at its highest point. If it does, change
the position of the jack under the load or lifting point. Raise the
ram by operating the handle up and down until contact is made
with the lifting point.
4. Position the head cap centrally under the load or lifting point and
ensure the load is applied through the centre of the head cap.
Off-centre loads and loads lifted while jack is not sitting level may result
in damage and/or injury.
5. Pump the handle up and down to raise the load to the required
height.
6. Place support stands in the correct position under the load.
7.
Slowly turn the release valve counterclockwise, just sufficiently to
allow a gradual decent of the load onto the support stands.
To lower the load:
1. Close the release valve. Operate the jack to raise the ram to the
correct position under the vehicle. Raise the load until the support
stands are free. Remove the stands clear of the load.
2. Slowly turn the release valve counter clockwise using the end of
the handle just sufficiently to allow a gradual descent of the load.
If the ram is still partially raised after the load has fully descended,
slowly open the release valve one full turn and push the ram down
to its lowest position.
General care of your jack:
1. To add oil with the ram fully lowered, set the jack in an upright
position. Wipe away any oil or foreign matter from around the oil
reservoir plug then remove it . The oil level should be 3mm below
the filler hole.
2. When jack is not in use, the ram, handle sleeve and extension screw
should be in the fully lowered position. This will protect precision
machined surfaces from corrosion.