- 41 -
Maintenance
Bracket
spacer
Diaphragm
Retainer
Plunger
Diaphragm
spacer
1. Assembly of diaphragm
1) Operate the pump to set stroke
length at 0% and stop it.
2) Put the retainer and diaphragm
spacer (if used) through the
threaded part of new dia-
phragm.
Caution
The round edge of the retainer should be directed to the dia-
phragm. Do not remove the bracket spacer. If removed, mate
projected and recessed part of the bracket and bracket spacer
and insert them to the bottom.
3) Screw the diaphragm into the plunger.
4) Operate the pump to set stroke length at 100% and stop it.
5) Tighten bolts evenly (diagonally) to mount the pump head.
Tightening torque
Model
Torque
Remarks
EHN-B11 • 21
2.16N•m
M4 hex. socket head bolts
EHN-C21
2.16N•m
M4 hex. socket head bolts
EHN-C31
2.55N•m
M4 hex. socket head bolts
EHN-C36
2.55N•m
M5 hex. socket head bolts
