TRUCK SERVICE MANUAL
b. It is highly recommended that the telescopic cylinder be returned to HYCO, Inc, for complete overhaul.
Disassembly Begin by removing the threaded pin eye at the top of the cylinder, all head nuts and packing. NOTE:
On most cylinders, the pin eye is secured to the tube by a set screw set against the top edge of the tube. Remove
set screw before disassembling.
d. Remove the retainer ring from the outer casing by forcing the edge of the retainer ring out of its groove and pulling
e. Once the retainer ring is removed pull the cluster of remaining tubes from the outercasing.
The remaining plungers can be removed through the bottom of the cylinder thus the retainer rings on the balance
of the plungers need not be removed from their grooves.
g. Reassemble cylinder in reverse of disassembly, reinstall retainer ring in cylinder tube, and install packing as is
outlined under paragraph one.
h. Replace all head nuts and the pin eye.
Install nylon slug and set screw to lock head nuts in place. Reinstate set screw in pin eye if applicable, If cylinder
is designed without set screw, put a small amount of Locktite, Type CVV, before installing it in the tube.
NOTE Inspection of the head nuts will determine if a cylinder is old style or C10000 series cylinder. On the C10000
series cylinder, the head nut will be 2" long and they will completely nestle together when the cylinder is closed. On the old
style cylinder, the head nuts are 1 1/2" long and when cylinder is closed, there is approximately 3/8" clearance between