ENGINE OIL FILTER BASE MAINTENANCE - continued

TM 9-2320-386-24-1-2

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ENGINE OIL FILTER BASE MAINTENANCE (Contd)

REMOVAL

Loosen two clamps (4) and remove air cleaner hoses (3) from air cleaner (1) and turbocharger (2).

Remove two screws (11) and washers (10), then remove three screws (12), washers (13), oil filter

base (14), and three O-rings (15) from oil cooler (5). Discard O-rings (15).

Remove plug (6), O-ring (7), spring (8), and bypass valve (9) from oil filter base (14). Discard O-ring (7).

CLEANING AND INSPECTION

.WARNING.

Volatile mineral spirits burn easily and fumes can explode. Do

not smoke or allow open flame nearby when using mineral

spirits. Doing so may cause serious injury or death to personnel.

Clean all oil filter base parts with mineral spirits.

Inspect oil filter base (14) for cracks, breaks, and damaged threads. Replace oil filter base (14) if

cracked, broken, or if threads are stripped.

Inspect spring (8) for distortions and cracked or collapsed coils. Replace spring (8) if distorted, or if

coils are cracked or collapsed.

Measure free length of spring (8). Free length should be 2.28 in. (57.9 mm). Replace spring (8) if

free length is incorrect.

Using spring tester, check spring load. Replace spring (8) if spring load does not read 3.2-3.8 lb

(1.5-1.7 kg) when compressed 1.70 in. (43.2 mm).

Inspect bypass valve (9) for freedom of movement in bore of oil filter base (14). If bypass valve (9)

movement is obstructed, ensure bore of oil filter base (14) is clean and free from foreign material.

Replace bypass valve (9) if movement continues to be obstructed.

INSTALLATION

Install bypass valve (9), spring (8), new O-ring (7), and plug (6) on oil filter base (14).

Install three new O-rings (15) and oil filter base (14) on oil cooler (5) with three washers (13),

screws (12), two washers (10), and screws (11).

Install two air cleaner hoses (3) on air cleaner (1) and turbocharger (2) and tighten two clamps (4).

Install engine oil filter (WP 0033 00).

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