General Pump MH - Manual (Page 10)

GENERAL PUMP
A member of the Interpump Group
MH SERIES
Page 10
11. MAINTENANCE INSTRUCTIONS
11.1 Crank mechanism maintenance.
Check oil level on a weekly basis by means of the two
oil dipsticks (1, Fig. 8) provided with notches for min.
and max. levels.
If necessary, top up from the oil plug 3, Fig. 8
Check the oil when cold and change the oil when still
hot (pump still at working temperature.).
In order to drain the oil from the pump remove the
magnetic plug 2, Fig. 8.
At every oil change clean the magnetic plug 2, Fig. 8 and
check the lower cover of Fig. 7 for grease
sediments or deposits.
OIL CHANGES Hours Qty.
Oil
Type
First Change 50
14.8
quarts
ISO
220 Subsequent
Changes
500
BRAND TYPE
AGIP ACER 220
ARAL MOTANOL HP 220
AVIA AVILUB RSL 220
BP ENERGOL HL 220
CASTROL ALPHA ZN 220
ESSO NUTO 220
FINA SOLNA 220
IP HYDRUS 220
MOBIL DTE OIL BB
SHELL TELLUS C 220
TEXACO REGOL OIL 220
TOTAL CORTIS 220
Oil should be changed at least once a year.
Recommended oils:
11.2 Fluid end maintenance
The fluid end does not require periodical maintenance.
Service operations are limited to valve inspection
and/or replacement, when necessary.
In order to remove the valves:
Loosen and remove the valve cover screws. 1, Fig. 9
Tighten the two grub screws, 1, Fig. 10 of each valve
cover until the complete valve unit moves upward
enough to allow easy extraction.
Valve components of each
valve unit are screwed
together in one single block
and therefore they can be
easily serviced, replaced
and installed back
in place. Separating the
various components of the
valve unit is carried out by
means of simple tools as
shown in Fig. 11, 12 and
13 on the next page.