General Pump SH - Manual (Page 11)

GENERAL PUMP
A member of the Interpump Group
SH SERIES
Page 11
Reassemble valves and head back in place
by following the disassembling steps in the
opposite sequence and use a torque wrench
at the following settings for valve cover
screws and head screws:
-Valve cover screw: 144.6 ft. lbs.
-Head screws: 397.8 ft. lbs.
NOTE:
In order to facilitate reassembling operation use our tool
1, Fig. 15 (p/n F200030140 for SH20-24, p/n F200030130
for SH26-30) or equivalent, able to hold the valve seat and
valve poppet in place when mounting the head on the
pump (see arrow Fig. 16).
11.3 Pumping unit maintenance.
The only maintenance operation required for the pumping
unit is the visual check of the amount of water drained out
by the cooling system through the hole provided
underneath the head (Fig. 7, page 9). It clearly shows
the pressure packing state of wear. Pressure packings
should be replaced when vibration and/or drop in the
operating pressure start to occur during operation.
Remove the eight head screws (1, Fig. 17).
Remove the pump head (see chapter 11.2).
Take out the collector (1, Fig. 19).