7
69
A. Using tool wrench, unwind sleeve of piston ring
compressor. Do not unwind sleeve too far or tool
damage will occur.
B. Apply clean engine oil to piston rings, piston
skirt, cylinder bore, and inside wall of Piston Ring
Compressor.
C. See Figure 91. With notch on piston crown
pointing toward the MAG bearing side, start
piston and connecting rod assembly into cylinder
bore.
D. Slide compressor sleeve over piston, and using
tool wrench, tighten to compress piston rings into
piston ring grooves.
E. Verify that all piston rings are captured and
compressed, but that compressor sleeve is still
loose enough to be rotated.
F. Gently tap on the top edge of the compressor
sleeve to be sure the bottom edge is in full
contact with cylinder deck.
G. Apply steady pressure to piston crown to slide
piston from compressor sleeve into cylinder bore.
NOTE:
Do not hammer piston into cylinder bore
or piston rings may be damaged. If piston travel
is stopped before it completely enters the cylinder
bore, then retract the piston, reset the piston ring
compressor sleeve, and try again.
92
93
15. With connecting rod positioned on crank pin journal,
install connecting rod cap, so that the match mark on
connecting cap is
NOT
NOTE:
Match marks on connecting rod cap and
shank are on the MAG bearing side. See B of Figure
16. Start two hex flange screws to fasten connecting rod
cap to connecting rod. Starting with the screw closest
to the piston (side opposite oil dipper), tighten screws
to
90-110 lb-in
(10.2-12.4 N-m).
17. Rotate crankshaft two revolutions to be sure
crankshaft, connecting rod, and piston move freely
without binding.
18. Move connecting rod sideways to verify clearance on
each side of crankpin journal.
19. Check operation of yoke on Mechanical Compression
Release (MCR) mechanism on camshaft gear.
NOTE:
Press yoke to the OPEN position, and then
verify that it returns to the CLOSED position when
released.
20. Thoroughly lubricate tappet bores and tappet shafts
with clean engine oil.
21. Install tappets into tappet bores. Be sure to install
each tappet in the same bore from which it was
removed.
Not for
Reproduction
Summary of Contents for Vanguard 10V300
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