Gen4 - Installation - Haulotte HTL 4014 Pressure Sensor Installation

Gen4 - Installation - Haulotte HTL 4014 Pressure Sensor Installation

Notes
The hydraulic pressure sensors are used to measure the lifting load of the telehandler
Installation Steps:

1. Raise the boom to approximately 40 degrees
2. Support and secure the boom using an A Frame or similar apparatus. It must support at least 2 tons. 
3. Apply the handbrake and insert chock under wheels. 
4. Remove the counterbalance valve on the side of the hydraulic lifting ram. 

Removing the counterbalance valve will release the hydraulic pressure which may result in a spray of oil. 

5. Secure the pressure manifold using the supplied bolts and seals.
6. Tighten the 12.9 grade bolts for the manifold to 41 NM using a torque wrench.


7. Disconnect the rod end pressure hose from the compensation cylinder rod pressure port. 
8. Rerun the hose behind the counterbalance valve along the white path as shown.
9. Cable tie to the adjacent hydraulic hoses to ensure the hose doesn't rest on the pressure sensors. 
10. Start the machine, pressurise the boom and check for leaks. See Note 1.
11. The main cylinder pressure sensors will be connected to the Sensor Input Harness during External Cable Completion.




Warning
Note 1. Ensure the pressure sensors do not collide with the boom and chassis structures and the cables do not stretch or pinch when the boom is raised and lowered.
Warning
Failure to tighten the bolts to the correct torque on the pressure manifold may result in a pressure failure on the counterbalance valve causing an uncontrolled fall of the boom