TM 5-3805-262-34
4-1. ENGINE MAINTENANCE (CONT)
d. Crankshaft and Main Bearings (Cont).
INSTALLATION (SHEET 3 OF 5)
(19) Position dial indicator on oil pump
drive gear and check backlash be-
tween pump gear and crankshaft gear
(19). Backlash must be 0.006 to-
0.011 inch. If backlash is less than
0.006 inch or more than 0.011 inch,
add or subtract shims (8) between
oil pump and number 1 main bearing
cap (9) to obtain correct backlash.
NOTE
To obtain an accurate reading in step
(20) below,
use a pry bar between
crank throw and number 2 or 4 main
bearing cap.
(20) Position dial indicator
against crankshaft gear
(19) and check crankshaft
end play. End play must
be 0.003 to 0.015 inch.
If end play exceeds 0.015
inch, install oversize
thrust washers (15) on
both sides of number 5
main bearing cap.
(21) Install pistons and
connecting rods (page
4-50).
(22) Install oil pump suction
tube (page 3-94).
4-30
