Page 124 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

TASK 4: Servicing of oil cooler
Fig 1
1 Remove the oil cooler (1) from the engine block
(2) (Fig 1).
2 Remove by pass valve (3) and spring (4).
3 Clean the oil cooler with kerosene oil and
compressed air.
4 Check oil cooler for crack.
5 Check the bypass valve ball (3). If necessary
replace the bypass valve ball.
6 Check the bypass valve spring’s (4) free length
and tension. Replace the spring if necessary.
7 Fix gasket and washer in between oil cooler’s halves, with the help of grease and fix the screws.
8 Fix gasket on the cylinder block (2).
9 Fit the oil cooler and tighten all the screws at recommended torque in correct sequence.

10 Fit the bypass valve ball, spring and tighten retaining nut with washer.

TASK 5: Adjust oil pressure relief valve

1 Remove the bypass valve (1) from the filter head.
2 Remove the oil pressure relief valve closing plug (5).
3 Remove the oil pressure relief valve (3) and pressure spring (4) (Fig 1 & 2).

Fig 1 Fig 2

4 Check visually the oil pressure relief valve seating area of the crank case, for pitting.
5 Check the filter bypass valve spring for damage and tension.
6 Check the filter bypass valve seating area for pitting/ scoring.
7 Place the bypass valve in its seat on the filter head.

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CITS : Automotive - Mechanic Diesel - Exercise 6.2