45
Check and Clean the Y-strainer screens.
Check the Driveshaft U-joints or Coupling. Visual inspection to ensure they are not loose and check the set
screws. Disable the pump controller battery charger and disconnect negative battery cable before removing the
driveshaft guard and inspecting the driveshaft. IMPORTANT: Return engine and pump controller to normal /
automatic mode once check is complete.
Check the Fuel Lines for leaks, breaks, bends or inconsistencies.
1 Year Maintenance Items
Clean or Replace the Air Filter.
Clean the Fuel Lift Pump Strainer. DP and DQ engines only. (Refer to section 3.1.6)
Check the Crank Case Vent System to make sure it is open and not kinked.
Lubricate the Driveshaft U-Joints and check alignment.
Replace the Fuel and Oil Filters with OEM or Clarke branded filters.
Check the Heat Exchanger Electrode. If the length is less than one inch, replace the electrode.
Test the Fuel for degradation. Testing shall comply with ASTM D975 or ASTM D 6751. If diesel fuel is found to
be deficient the fuel shall be reconditioned or replaced.
Replace the Lubricating Oil.
Replace the Coolant. Clarke Coolant (part # C054129).The only acceptable substitute is COOL-GARD II part
number TY26575. Warranty is contingent on utilizing the indicated coolant.
Check the Mounting Isolators and foundation nuts. (If applicable.)
Check the Wiring System connections, tighten if necessary.
2 Year Maintenance Items
Replace the Air Filter.
Replace the Batteries.
Replace the Belts.
Replace the Coolant Hoses.
Replace the engine Thermostats.
5 year Maintenance Items
Replace the Torsional Coupling (if applicable)
IMPORTANT: Set main pump controller to “OFF” while servicing engine. Before turning the main pump
controller to the "OFF" position, check with the maintenance and security supervisors to verify that all the
departments concerned will be alerted of the temporary interruption of their fire protection equipment for
normal maintenance or testing. Also, alert the local fire department in the event that the main pump controller
is connected by silent alarm to headquarters. When servicing is complete, return main pump controller selector
to "Automatic" position and the mode selector on the engine to “Automatic” position. Advise the appropriate
personnel the engine has been returned to the “Automatic”.
NSR Heat Exchanger Maintenance
The NSR heat exchanger tube bundle can be removed and cleaned to maintain proper cooling and flow
requirements. The following cleaning procedure should be performed on an as needed basis.
Tool and Parts Requirement
The tools required to complete this maintenance procedure are the following:
O-Ring part number 0C12C979 qty 2
Lube part number 0C12E268 or equivalent all purpose, high viscosity lube compatible with rubber, heat
resistant up to 204°C (400°F).
Cleaning Kit number: 0C12E280 (Includes: Handle 0C12E278, Rod 0C12E281, Brush 0C12E279 and De-scaler
liquid 5 gal. 0C12E77).
Coolant Clarke Fire part number 0C054129 or Cool-Gard II part number TY26575.
Preparation
Lockout the engine
Place the pump controller mode selector in the OFF position, disable the pump controller battery
chargers and remove the negative battery cable from each engine battery to prevent the engine from
starting.
Drain the engine coolant
Drain the engine coolant into a proper container for disposal.
Turn off the raw water supply
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