12
Instruction Manual
SECTION 4 - MAINTENANCE
12. Torque bolts in sequence to one half of the nal
torque value stamped on the head. Follow the
bolt torque pattern as stamped on the head.
Repeat the torque sequence until bolts are
tightened to nal torque value.
13. Reconnect suction inlet and discharge outlet to
piping system. Follow Section 5 if your pump
is equipped with leak detection.
14. Fill the liquid end with hydraulic oil (refer to
above “INITIAL START-UP” procedure).
4.2 HYDRAULIC OIL REPLACEMENT
Inspect and replace hydraulic oil on same schedule
as the pumps gear drive lubricant (or whenever
diaphragm is replaced). Annual replacement is
recommended.
4.3 MARS REFILL VALVE (400)
The MARS rell valve (400) requires no periodic
maintenance. Clean hydraulic oil is critical for
proper operation.
Strainer service: while replacing the hydraulic
oil, it is also recommended that the hydraulic oil
strainer be replaced. The strainer, (390) which
screws into the displacement chamber can become
fouled or clogged over time.
Screw the valve back into the chamber. If the valve
is damaged or broken, replace the entire assembly.
4.4 RETURNING UNITS TO THE FACTORY
Pumps will not be accepted for repair without a
Return Material Authorization, available from the
factory or other authorized Customer Service
Department. Pumps returned to the factory for
repairs should be clearly labeled to indicate the
liquid being pumped. Process liquid should be
ushed from the pump liquid end before the pump
is shipped.
NOTE:
Federal law prohibits handling of equipment that
is not accompanied by an OSHA Safety Data
Sheet (SDS). A completed SDS must be packed
in the ship-ping crate with any pump returned
to the factory. These safety precautions will aid
the troubleshooting and repair procedure and
preclude serious injury to repair personnel from
hazardous residue in pump liquid end. A Safety
Data Sheet must accompany all returns.
4.5 RECOMMENDED SPARE PARTS
Be Prepared. To avoid delays in repairs, the
following spare parts should be ordered for each
pump:
One Routine Preventive Maintenance Kit, which
contains replacements for those parts which
are subject to wear; specically the ball checks,
check valve seats, gaskets, and the hydraulic uid
strainer. Replacing these parts annually with an
RPM kit can reduce the possibility of unexpected
downtime and will help to extend pump life.
Parts orders must include the following information:
1. Serial number (found on nameplate)
2. Model number (found on nameplate)
3. Quantity required
4. Part number
5. Part description
Always include the serial and model numbers in all
correspondence regarding the unit.
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