10
3) Replacing Cup packing
Cup packings
⑦
are inserted in between connecting rods
⑤
and retainer
⑥
Suction
valve rubber separator
⑭
. First, remove the 3 (total of 6) flat countersink screws (M4×8)
⑰
and then remove the retainer , Suction valve rubber separator , cup packings and cylinder
④
.
* Carefully remove debris from cylinder and retainer.
Next, set the cleaned cylinder into casing
①
and line up centers of the new cup packings
with the centers of cup packing attachment position on the connecting rod and insert the
cylinder by hand. Place the retainer with the newly attached Suction valve rubber separator
on top of the cup packings and fasten sealing/anti-loosening agent for screws (NK-4 or
LOCTITE 242 or LOCTITE243)-coated flat countersink screws (M4×8) with a torque of
3.0 N
･
m.
*Cup packing attachment direction
DOP-40D: Facing downwards DOP-80S: Facing upwards
Photo 8: DOP-80S
Connecting rod
Retainer
Suction
valve rubber
separator
Flat
countersink
screws
Cup packing
(*Refer to photo 7,8 for
attachment direction.)
Photo 7: DOP-40D
Photo 10: Retainer attachment
Photo 9: Cup packing attachment position
Fig.6.1
Cup packing
a
ttachment
figure
