Clarke Strong-Arm CTJ4000G, Operation & Maintenance Instructions Manual, Page: 5 / 12

5
OPERATION
1. Ensure the vehicle to be raised is stable and on firm level ground with the
wheels chocked.
• The jack may move slightly during operation. It is important
therefore, that the floor is clean and completely free from debris.
2. Position the jack so that the saddle is directly beneath the lifting point
under the vehicle.
• Consult the vehicle handbook to determine the lifting points.
3. Use the operating handle to close the release valve by turning it fully
clockwise.
4. Pump the operating lever to raise the saddle to the jacking point.
5. Check that there are no obstructions to prevent a clean lift and make sure
all personnel are well clear before raising the vehicle.
6. Pump the handle to raise the vehicle to the required level.
• If, at any time, the jack feels spongy, follow the bleeding procedure
under Maintenance.
7. Position suitable, good quality axle stands directly beneath the supporting
points on the vehicle. Place the operating lever over the release valve and
very gently twist the operating lever anti-clockwise to lower the load onto
the stands.
8. Check constantly, preferably with an assistant, that the vehicle is resting
correctly on the axle stands and that the stands are stable before the
weight is taken.
• Ensure the axle stands are centred under the support point and fully
stable before full weight is taken.
9. To stop it lowering at any point, turn the operating valve clockwise again.
Always avoid a rapid descent by turning slowly.
NOTE: Ensure this is carried out under complete control. DO NOT allow
the load to drop suddenly as this could damage internal parts.
10. Completely remove the jack from the vehicle.
WARNING: NEVER WORK ON THE VEHICLE WHEN SUPPORTED ONLY BY A
JACK. THIS IS HIGHLY DANGEROUS. THE VEHICLE MUST BE SUPPORTED ON
AXLE STANDS OR SUITABLE SUPPORTS BENEATH THE CORRECT JACKING/
SUPPORT POINTS.