Haulotte HT23RTJ O, Maintenance Book

Page: 196 / 534

196 4001055250 E 10.21 USA / GB
Upper boom
Procedure of dismantling / reassembling hydraulic rotary actuators
MS0028
6 - Greasing Thrust Washers
22. Insert the set screws ( 113 ) over the lock pins. Tighten to
25 in-lbs (2.8 Nm).
1. After the actuator is assembled but before it is put into ser-
vice, the thrust washer area must be packed with Lithium
grease. There are two grease ports located on both the
shaft flange and the end cap. They are plugged with cap
screws ( 113 ) or set screws. Remove the grease port
screws from the shaft flange and end cap (See exploded
view).
N.B.-:-I
F A HYDRAULIC TEST BENCH IS NOT AVAILABLE
,
THE
ACTUATOR CAN BE ROTATED BY HAND
,
OPEN THE PRESSURE PORTS
AND USE A PRY BAR WITH CAP SCREWS INSERTED INTO THE SHAFT
FLANGE TO TURN THE SHAFT IN THE DESIRED DIRECTION
.
Insert the tip of a grease gun into one port and apply grease to
the shaft flange. Continue applying until grease flows from the
opposite port. Cycle the actuator five times and apply grease
again. Repeat this process on the end cap. Insert the cap
screws into the grease ports and tighten to 25 in-lbs (2.8 Nm).