Valve Clearance Adjustment Sequence - Isuzu C-240PW-28 Technical Manual

b. Install PCV assembly, refer to paragraph 3-20.3.
c. Install valve rocker oil feed pipe, refer to paragraph 3-16.2.
d. Perform adjustment procedures, refer to paragraph 3-26.6.
e. Position new preformed packing (6) and rocker cover (5) on cylinder head and secure with two bolts (1), wash-
ers (2) and new gaskets (3). Tighten bolts to 114 in-lbs (13.0 Nm)
3-26.6. Adjustment.
a. Remove rocker cover (5, FIGURE 3-52) if not already removed, refer to paragraph 3-26.1.
b. Ensure all eight retaining plate bolts (7) are tight. If not, tighten in accordance with paragraph 3-26.5.
c. Rotate crankshaft until crankshaft pulley TDC line is aligned with timing pointer. This will bring piston in No.
1 or No. 4 cylinder to TDC on compression stroke.
d. Check for play in No. 1 intake and exhaust valve push rods. If push rods have play, No. 1 piston is at TDC
on compression stroke. If push rods are depressed, No. 4 piston is at TDC on compression stroke.
e. Adjust valve clearance for rocker arms shown in View A of FIGURE 3-59 as follows:
(1) Loosen nut (19, FIGURE 3-52) and adjusting screw (20).
VIEW A
FIGURE 3-59. Valve Clearance Adjustment Sequence
ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
VIEW B
3-109