Maintenance; Replacing The Extension Stopper Rubber - Nabtesco NK-6 Symphony Manual De Instrucciones

7. Maintenance

The maintenance of the device must be carried out
at least every 2 years.
7-1 Replacing the Extension Stopper
Rubber
Replace the extension stopper rubber
terminal impact occurs in the swing phase (if
the impact cannot be eliminated by adjusting
the valve (E) on the extension side of the
hydraulic cylinder).
*1 The extension stopper
expendable. The rubber may deteriorate
earlier under some use conditions. When
replacing
stopper rubber replacement kit (N-G010).
1. Remove
machine screw (M3) using a 2 mm
hexagonal wrench, and remove the rubber
cover.
2.
Remove the extension stopper rubber. It
can be removed easily if the knee joint is in
the stance-flexion state.
3.
Insert the new extension stopper rubber in
the direction shown in Fig. 19. It can
be inserted easily if the knee joint is in
the stance-flexion state.
Insert the rubber with the front oval
protrusion pointing toward the rear of the
knee joint. If it is fitted in a wrong
CAUTION
direction, it cannot be inserted correctly.
4. Fit the rubber cover, and tighten the
hexagon socket head machine screw after
applying
LOCTITE 243 (or its equivalent) to the
threaded portion of the screw.
[Tightening torque: 1.0 N･m]
5.
Perform the same on the opposite side. (2
places on the right and left sides)
Hexagon socket head
machine screw
(Apply LOCTITE 243)
Rubber cover
* Set the line on the rubber horizontally.
Fig. 19 Replacing the Extension Stopper Rubber
P.23
rubber is an
it, purchase the
the hexagon socket
an appropriate
Extension stopper rubber
EN – 21
when
*1
extension
head
amount of
49