TM-9-2815-225-34-P

ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2005

TM-9-2815-225-34-P - Page 388 of 736

TM 9-2815-225-34&P

0043 00

0043 00-4

CYLINDER HEAD AND CYLINDER HEAD COMPONENTS INSTALLATION (Contd)

ROCKER ARM HOUSING

NOTE

The following procedure covers the installation of one rocker

arm housing assembly. The installation of the remaining rocker

arm housing assemblies is similar.

1.

Install new gasket (6) on cylinder head (5).

2.

Loosen six adjusting screws (2) three complete turns.

3.

Apply GO-80/140 lubricating oil to ball ends of four intake and exhaust pushrods (4) and two

injector pushrods (3).

NOTE

The injector pushrods are larger in diameter than the valve

pushrods. The valve pushrods are 0.007 in. (0.178 mm) longer

than injector pushrods.

Ensure each pushrod is installed in same position as noted

during removal.

Ball end of pushrods must fit into socket of cam followers. The

injector pushrod is installed on center injector cam follower.

4.

Install four intake and exhaust pushrods (4) and two injector pushrods (3) on cam followers of

cylinder head (5).

NOTE

Position six rocker levers so ball end of adjusting screw drops

into sockets of six pushrods.

5.

Install rocker arm housing (7) on cylinder head (5).

6.

Install six new washer bearings (8) on rocker arm housing (7).

NOTE

There are three different sizes of rocker housing studs. Install

correct rocker housing stud in correct rocker arm housing.

Damage to rocker housing stud threads may result if

substitution of length is made.

7.

Install six rocker housing studs (1), (9), and (10) on rocker housings (7) as shown in figure 3.

Tighten studs (1), (9), and (10) 65 lb-ft (68 N

•

m) in sequence shown in figure 3.