General Pump MW Repair Manual - Manual (Page 15)

GENERAL PUMP
A member of the Interpump Group
MW/S SERIES
2.1.2 Assembly of Mechanical Parts
Proceed with assembly following the reverse order indicated in point 2.1.1. The proper sequence is as
follows:
Assemble the rod to the plunger guide. Insert the elastic pin Ø5 in its hole on the plunger guide (1, fig. 42)
and join the rod to the plunger guide by means of M20 x 35 screws (1, fig. 43).
Insert the con-rod in the plunger guide (1, fig. 39) and then insert the spindle (1, fig. 38). Apply the two
shoulder retaining rings (1, fig. 37).
Assembly has been carried out properly if the con-rod foot, plunger guide and
spindle rotate freely.
Separate the caps from the half supports. Proper coupling can be verified by the numbering on the side
(1, fig. 40).
After having checked casing cleaning, proceed with assembly of half support-plunger guide unit inside
casing rods (1, fig. 33).
Insertion of the half support-plunger guide unit in the casing must be made with the
half bearings set in the direction in which numbers are visible from above.
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Lock in the rod in correspondence with the two planes with a 36mm fork spanner (1, fig. 44) and proceed with
calibration with a torque wrench (1, fig. 45) as indicated in paragraph 3 “Screw Tightening Calibration”.
Ref 300791 Rev.C
11-12