Cummins N14 STC, Celect, Celect Plus – Service Manual 007-003   Lubricating Oil Cooler

Lubricate new o-rings with vegetable oil and install onto the oil cooler core transfer tubes.

Install the connection retainer and o-rings adapters with new o-rings. Do

not tighten the four retainer capscrews at this time. Adapters must
be loose so they will align with the transfer tubes.

NOTE: Make sure to keep o-rings in place when installing the adapters and retainer.

Install the oil cooler core onto the oil cooler transfer connection (housing) by inserting the transfer tubes into the o-ring adapters.

NOTE: Make sure the o-ring adapters move freely when the transfer tubes are inserted as this will allow tubes to be centered in the adapters.

Install the oil cooler core mounting gaskets and holddown capscrews.

Tighten the holddown capscrews.

Alternately tighten the connection retainer capscrews.

Install two guide studs into the oil cooler support mounting holes in the cylinder block.

Install a new oil cooler support gasket over the guide studs with the side marked “Cooler Side” facing outward or visible.

For those engine applications utilizing the low mount oil cooler arrangement, follow the same installation procedure.

Install the oil cooler assembly over the guide studs, and push it against the cylinder block.

Install the oil cooler support bracket capscrew. Do

not
tighten at this time.

Install four of the support mounting capscrew, and remove the two guide studs.

Install the two remaining capscrews, and tighten all support capscrews.

First, loosen the two capscrews which hold the oil cooler support bracket to the rear of the oil cooler housing.

Then, alternately and evenly, tighten the block mounting capscrew and the oil cooler housing capscrews beginning with the block mounting capscrew.