Priming the Lubricating Oil System
(2-08)
Caution: The lubricating oil system must be primed be-
fore operating the engine after any internal engine re-
pairs or extended engine storage (beyond 6 months) to
avoid internal component damage. Do not prime the
system from the bypass filter; the filter will be damaged.
On CELECT™ engines, remove the lubricating oil tem-
perature sensor from the lubricating oil pump cover.
Lubricating oil pumps on N14 STC engines are equipped
with a 9/16-18 UNF CompuchekT coupling nipple. Use
the coupler, Part No. 3376859, to connect the priming
pump to the coupling.
Install the priming pump oil supply hose to the lubricating
oil pump coupling. Use clean 15W-40 lubricating oil from
a drum or a container. Supply oil to the lubricating oil
pump and engine.
Allow the oil to flow until the oil pressure gauge indicates
a maximum pressure of 210 kPa [30 psi] at the main oil
rifle to prime the lubricating oil system.
Remove the priming pump oil supply hose and install the
lubricating oil temperature sensor (CELECT™ engines),
or 9/16-18 UNF CompuchekT coupling nipple (STC en-
gines).
Torque Value:
Plug 34 N•m [25 ft-lb]
Sensor 34 N•m [25 ft-lb]
Priming the Lubricating Oil System (2-08) Section 2 - Lubricating System
N14Page 2-24
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