Section VI. DIESEL ENGINE

c. I n s p e c t i o n a n d R e p a i r . I n s p e c t t h e o i l p a n

(4) Separate the oil pan gasket from the oil

p a n so that the gasket remains with the oil pan

a n d oil pan plate for chips, cracks, weld damage,

and other damage. Smooth contact

plate. Remove the oil pan.

warpage

surfaces with a hone or file. Repair cracks by

( 5 ) Remove the bolts and lockwashers which

secure oil pan plate t o t h e c y l i n d e r b l o c k a n d

welding (TM 9-237). Replace parts if warpage is

f l y w h e e l housing. Remove the oil pan plate and oil

excessive.

pan gasket.

d . I n s t a l l a t i o n . Install the oil pan and oil pan

b. Cleaning. Clean the oil pan and oil pan plate

plate by reversing the removal procedure. Use a

w i t h cleaning solvent (Fed. Spec. P-D-680). Ensure

new oil pan gasket. Service the engine with

that all sediment is removed from the sump in the

lubricating

oil

(LO

5-2410-233-12).

oil pan.

Section

VI.

DIESEL

ENGINE

( 8 ) Remove the bolt (1) and washer (2) from

5-26. General

each rocker arm bracket. Carefully pry the rocker

The tractor is powered by the D333C, 4.75 inch

arm assembly from the cylinder head.

b o r e x 6 inch stroke, six cylinder, 638 cubic inch

t u r b o c h a r g e d diesel engine. The engine is rated at

180 horsepower at 2000 rpm.

5-27. Cylinder Head and Valve Mechanism

(9) Disassemble the rocker arms as follows:

a. Removal and Disassembly (fig. 5-40).

(a) R e m o v e t h e l o c k n u t ( 3 ) a n d a d j u s t i n g

( 1 ) Drain the engine coolant. Refer to TM 5-

screw

(4).

2410-233-10.

(b) Remove the ring (5), washer (6) and

(2) Remove the exhaust tube, muffler, (para

spring (7).

5-16), exhaust manifold (para 5-18), air cleaner

(para 5-15), turbocharger (para 5-17), and hood

hushing (9).

(para 5-2).

(d) Remove the bracket (10), rocker arm

(3) Remove the fuel injection lines. Cap or

(11), washer (12), spring (13) and washer (14)

plug openings (para 5-10).

from the rocker arm shaft (15).

(4) Remove the glow plugs.

( 1 0 ) Remove the push rods (16) and tag them

(5)

Steam-clean

the

engine.

f o r proper installation.

(6) Remove the rocker arm

cover

(TM

( 1 1 ) Remove the cylinder head bolts (17) and

2410-233-20).

washers (18).

(7) Loosen the rocker arm adjusting screw

locknut (3) front each of the rocker arms. Back off

t h e adjusting screws (4) one or two turns.

5-54