KTM STREAMLINE L-IV 50, Руководство по эксплуатации и обслуживанию, Страница: 85 / 178

SECTION 7
HIGH PRESSURE WATER
p. 7-14 80078868
WARNING
!
7.2.5 Plunger and Hydraulic Cartridge Removal and Installation
1. Remove HP and LP piping/ hose, then remove HP cylinder jug following
procedure 7.2.2 above.
2. Remove the proximity switch on the intensifier side nearest HP cylinder to be
serviced. This procedure will allow hydraulic oil to drain to tank and will
minimize oil spillage. Draining takes about 5 minutes. Remove cartridge
retainer flange from hydraulic cylinder head by first removing retaining ring
using a flat blade screwdriver. Wipe and clean surfaces, weep holes, and
grooves in cartridge retainer flange. Check retainer flange for cracks.
NOTE:
Proximity switch removal results in potential oil spray hazard if
proximity switch is not reinstalled. Reinstallation is recommended as soon as
practical.
Verify that proximity switches (2 ea) are properly installed
Failure to tighten proximity switch hold down screws will
result in hydraulic oil spraying in general directions.
3. Using cartridge/plunger removal tool threaded to the seal cartridge, pull the
cartridge outward over the plunger. Seals in the hydraulic cartridge can be
removed and replaced, or the entire cartridge can be replaced. It is
recommended that at least one spare cartridge be kept on hand, ready to
install. See Section 7.3.6 for servicing hydraulic seal cartridge.
4. With the cartridge removed, the plunger can be removed with the cylinder
head in place. Slide the cartridge/plunger removal tool over the plunger,
with the hex-shaped smaller end toward the plunger button. Note
orientation of plunger button retainer pins (6 each), then align hex flats of
tool with pins. Force tool by hand under pins, then rotate tool slightly to
cause pins to retract enough to release plunger. Plunger can now be
extracted from hydraulic piston. See Section 7.3.5 for servicing the plunger.
5. To install new plunger, slip cartridge/plunger removal tool over plunger, hex
end toward plunger button, to help center plunger in cylinder head.
Position plunger in mating pocket of piston, then force into place by hand.
Using a flashlight, verify that all 6 pins are equally extended to grip plunger
button.
6. Lubricate exposed surfaces of seals in hydraulic seal cartridge with food
grade grease and slide cartridge over plunger into cylinder head cavity.
7. Thoroughly clean cartridge retainer flange, including cross-drilled weep
holes. Install flange and internal retaining ring, making sure that the
retaining ring seats fully inside its groove. Note that hydraulic cartridge O-
rings may take up clearance. To install retaining ring, first tap lightly on
retainer flange using plunger removal tool. This will compress cartridge O-
rings enough to get retaining ring started in groove. Push on outer edge of
retainer flange with a flat bladed screwdriver while working one end of
retaining ring into groove. Retainer flange should tilt or tip enough to allow
retaining ring to move into its groove. Continue working ring into groove
while tilting flange until retaining ring is fully installed
.