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.
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
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
( 8 ) Remove the bolt (1) and washer (2) from
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-
(b) Remove the ring (5), washer (6) and
(2) Remove the exhaust tube, muffler, (para
5-16), exhaust manifold (para 5-18), air cleaner
(c) Remove the rocker arm (8) and pull the
(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
f o r proper installation.
(6) Remove the rocker arm
( 1 1 ) Remove the cylinder head bolts (17) and
(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.