TM-9-2815-237-34

ENGINE, DIESEL: 8 CYLINDER, 6.2 AND 6.5, NORMALLY-ASPIRATED, DETUNED AND TURBOCHARGED

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JULY 2004

CHANGE 2

TM-9-2815-237-34 - Page 208 of 267

TM 9-2815-237-34

2-41. ENGINE ASSEMBLY FROM SUBASSEMBLIES (Cont’d)

f. Timing Chain and Drive Sprockets

1,

2.

3

<

4.

5.

6.

7.

Install woodruff key (7) in camshaft (6) and woodruff key (8) in crankshaft (9).

Install crankshaft sprocket (10) and camshaft sprocket (4) in timing chain (5) and align timing

marks (11).

Rotate crankshaft (9) and camshaft (6) so woodruff keys (7) and (8) align with keyway slots in

crankshaft sprocket (10) and camshaft sprocket (4).

CAUTION

Timing marks on crankshaft sprocket and camshaft sprocket must

remain aligned after installation or engine damage may result.

Install crankshaft sprocket (10), camshaft sprocket (4), and timing chain (5) as an assembly onto

camshaft (6) and crankshaft (9).

Install pump drive gear (3) on camshaft (6) with washer (2) and capscrew (1). Tighten capscrew (1)

to 55-66 lb-ft (75-90 N•m).

Apply OE/HDO to timing chain (5).

NOTE

Perform step 7 only if timing chain was replaced.

Check timing chain deflection midway between camshaft sprocket (4) and crankshaft sprocket (10).

Total deflection must not exceed 0.5 in. (12.7 mm). If deflection exceeds specification, inspect cam-

shaft sprocket (4) and crankshaft sprocket (10) for

damage. Replace either

if damaged and recheck

deflection.

2-164