HS50_advance_level 1_20200522_221201 (1) - 第481页
06/2002 E dition S tudent Guide HS-50 Advance d I 12 Preve ntive Maintenance 48
Student Guide HS-50 Advanced I 06/2002 Edition
12 Preventive Maintenance
47
Star
a Wipe the star and the distributor disk seat using a lint-free cloth.
: Apply a thin film of ISOFLEX TOPAS NCA 52 grease to the running surface of the star brake.
Remove any visible excess grease.
12
Make sure that no dirt or grease enters the vacuum ducts.
Segments
12
During cleaning, be careful not to damage the sleeve retaining springs in the segments.
s Carefully clean the segments using a cottonwool bud moistened with ethyl alcohol.
d Remove any visible dirt from around the segments.
Valve ports
: Remove the 12 valve plungers.
f Clean the valve ports using a cottonwool bud moistened with ethyl alcohol.
: Clean all around the valve ports.
Assembling the front part
: Insert cleaned or new sleeves into the segments.
: Insert cleaned or new valve plungers into the valve ports.
06/2002 Edition Student Guide HS-50 Advanced I
12 Preventive Maintenance
48
Student Guide HS-50 Advanced I 06/2002 Edition
12 Preventive Maintenance
49
Distributor block (back part of the head)
a Carefully remove the distributor block and the two O-rings.
s Carefully remove the two O-rings.
: Clean them and grease very sparingly with Unisilkon L250L.
: Check the distributor block for damage
If it is damaged, replace it with a new block (see Service Manual).
: Wipe the distributor block using a lint-free cloth moistened with ethyl alcohol.
: Blow it through with compressed air.
d Check that the ball catch moves easily
If it does not move easily, replace the entire distributor block.
f Place the clean distributor block and lightly greased O-rings on a clean surface.