Lift Cylinder - Snorkel TM12 Service Manual

Cylinders
L C
I F T
R
EMOVAL
Refer to Figure 3-16: "Elevating Assembly," on page Section 3-20 for details.
1. Fully lower platform.
2. Provide a suitable container to catch the hydraulic fluid, then disconnect the hydraulic hose. Immedi-
ately plug hoses to prevent foreign material from entering.
3. Remove the adapter from the base of the cylinder, inside the chassis.
4. Remove the Emergency Lowering Valve Knob from the valve at the base of the cylinder, then remove the
Emergency Lowering Valve out the access hole in the bottom of the chassis.
5. Remove the snap ring at the bottom of the cylinder under the chassis.
6. Remove the platform mast cover.
7. Remove the capscrew and locknut securing the cylinder rod to the upper cylinder mount.
9. Attach a suitable hoisting device and sling to the cylinder. Carefully lift the cylinder approximately 0.5 m
(18 in.) until you can see the vent line tubing attached near the top of the cylinder barrel. Detach
the tubing by depressing the green ring on the fitting at the same time you pull firmly on the tube.
Plug the end of the tube and the fitting to prevent contamination.
10. Raise the cylinder the rest of the way through the top of the mast.
I
NSTALLATION
1. Attach a suitable hoisting device and sling to the cylinder. Carefully lower the cylinder through the top of
the mast until you can reattach the vent line tubing. Simply push the tubing into the fitting until it goes no
further. Pull firmly to ensure that it is installed correctly.
2. Lower the cylinder the rest of the way, and secure the cylinder to the chassis with the snap ring.
3. Install capscrew, washers and locknut securing cylinder rod to the upper cylinder mount.
4. Install platform mast cover.
5. Install the Emergency Lowering Valve, Knob and adapter to the base of the lift cylinder.
6. Remove the plug from the hydraulic hose and attach it to the adapter.
7. Attach the vent line to the hydraulic tank.
8. Test with weight at rated Platform load to check system operation. Check for leaks
Page 3-18
Y L I N D E R
Section 3 - Service & Repair