501-L00 Page 8/12
TRUCK MOUNTED PUMPS
PUMP SPEED
PTO and hydraulically driven units MUST contain speed control devices to prevent pump speeds above the maximum RPM
specifications, regardless of the truck engine unloading speeds. Should fluid delivery be appreciably less than expected, see the
"General Pump Troubleshooting" section.
MAINTENANCE
Failure to set the vehicle emergency
brake and chock wheels before
performing service can cause severe
personal injury or property damage
Failure to disconnect and lockout
electrical power before attempting
maintenance can cause shock, burns or
death
Hazardous
machinery can
cause serious
personal injury.
Hazardous voltage.
Can shock, burn or
cause death.
Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause
severe personal injury or death
Failure to relieve system pressure prior
to performing pump service can cause
serious personal injury or property
damage.
Systems with meters will still
be pressurized even after the hose is
emptied
Hazardous
machinery can
cause serious
personal injury.
Hazardous pressure
can cause serious
personal injury or
property damage
Disconnecting fluid or pressure
containment components during pump
operation can cause serious personal
injury or property damage.
If pumping hazardous or toxic fluids,
system must be flushed and
decontaminated, inside and out, prior to
performing service or maintenance
Hazardous pressure
can cause personal
injury or property
damage
Hazardous or toxic
fluids can cause
serious injury.
NOTICE:
Maintenance shall be performed by qualified technicians only,
following the appropriate procedures and warnings as presented in this manual.
STRAINERS
Strainers must be cleaned regularly to avoid pump
starvation. Schedule will depend upon the application and
conditions.
LUBRICATION
NOTICE:
To avoid possible entanglement in moving parts do not
lubricate pump bearings, hydraulic adapter coupling or
any other parts while pump is running
NOTICE:
If pumps are repainted in the field, ensure that the
grease relief fittings (76A) are functioning properly after
painting. Do NOT paint them closed. Remove any
excess paint from the fittings.
Lubricate pump bearings and hydraulic motor couplings (if
equipped) every three months at a minimum. More frequent
lubrication may be required, depending on the application
and the operating conditions.
Recommended Grease:
Mobil® - Mobilgrease XHP222,
Exxon® - Ronnex MP Grease,
or equivalent Lithium grease.
Greasing Procedure:
1. Remove the grease relief fittings (76A) from the bearing
covers (27) or hydraulic motor adapter (135).
2. SLOWLY apply grease with a hand gun until grease
begins to escape from the grease relief fitting port. Discard
excess grease in accordance with the proper codes and
regulations.
3. Replace the grease relief fittings (76A).
DO NOT over grease pump bearings. While it is normal for
some grease to escape from the grease tell-tale hole after
lubrication, excessive grease can cause mechanical seal
failure. The tell-tale hole is located in the head (20) between
the bearing (24) and the mechanical seal (153).