HAMMELMANN HDP 502 / S 1100-50, Руководство по эксплуатации, Страница: 76 / 311

Operating instructions
Pressure regulating valve
00.05865.0146
No.: HDP 502 / S 1100-50
Page 70, Issue: 03.2017

Copyright Hammelmann GmbH
Germany

D-59302 Oelde

Carl-Zeiss-Straße 6 - 8
 Remove ring (50) from housing (10).
 Carefully clamp the pressure regulating valve (housing) in a vice so that the reduction piece (80) is over the top
and that nothing would be damaged.
 Unscrew the reduction piece (80) out of the housing (10). Remove housing from vice. If necessary remove
cylinder ring (160) from the reduction piece (80).
 Using circlip pliers remove circlip (110) from control piston.
 Remove disc (130) and spring (140).
 Push control piston (30) and valve seat ring (60) out of the housing (10)
 By using a screw driver remove the bracket (35)
from the housing (10). (Ref. to fig. 1) Thereby
do not damage the housing.
 Afterwards remove support ring (20) with
O-ring (25) from the housing (10).
 Always exchange bracket (35), seal (20) and O-
ring (25) together.
 Fig. 1
 Remove support ring (70 with O-ring) out of the valve seat ring (60). (Support ring and O-ring are one part
position.)
 Inspection
 Especially examine control piston (30) and valve seat ring (60) for signs of wear or damage. They should be
carefully examined and if worn replaced by new. If wear is slight or there are minor pits in the surface a certain
amount of rework is possible. Rework should be done only by HAMMELMANN.
 Visually inspect all other parts for signs of wear or damage. Replace if necessary.