Haulotte HT23RTJ O, Maintenance Book

Page: 194 / 534

194 4001055250 E 10.21 USA / GB
Upper boom
Procedure of dismantling / reassembling hydraulic rotary actuators
MS0028
14. Insert the shaft ( 2 ) into the piston ( 3 ). Be careful not to
damage the piston seals. Do not engage the piston gear
teeth yet.
15. Looking at the actuator from the end opposite the shaft
flange, use the exisitng timing marks to align the gear teeth
on the shaft ( 2 ) with the gear teeth on the inside of the
piston ( 3 ). When the marks align, gently tap the flange
end of the shaft with a rubber mallet until the gear teeth en-
gage.
16. Install two bolts in the threaded holes in the flange. Using
a metal bar, rotate the shaft in a clockwise direction until
the wear guides are seated inside the housing bore.
N.B.-:-A
S THE SHAFT IS ROTATED
,
BE CAREFUL NOT TO DISENGAGE
THE PISTON AND HOUSING GEARING
.
17. Install the stop tube ( 400 ) onto the shaft end if necessary.
Stop tubes are an available option to limit the rotation of an
actuator.