13855 Mercury NUT-TRIM COVER SCREW

Illustration 1 g00290564
(1) Thickness of thrust plates ... 13.80 0.05 mm (.543 .002 inch)Install the thrust plates on the rear main bearing for rear driven equipment. Install the thrust plates on the front main bearing for front driven equipment.End play for crankshaft with new thrust plates ... 0.20 to 0.60 mm (.008 to .024 inch) (2) Diameter of new connecting rod journals ... 235.000 0.025 mm (9.2520 .0010 inch) (3) Diameter of new main bearing journals ... 275.000 0.025 mm (10.8268 .0010 inch)
Illustration 2 g00290565
Section A-ATighten the counterweight bolts according to the following procedure.
Apply 4C-5592 Anti-Seize Compound to the threads and seating surfaces of bolts (4) and (5) .
Seat the counterweight by tightening bolt (4) first.Tighten bolt (4) to the following torque. ... 1500 100 N m (1100 75 lb ft)Tighten bolts (5) to the following torque. ... 1500 100 N m (1100 75 lb ft)
Loosen bolt (4) and bolts (5) .
Reseat the counterweight by tightening bolt (4) first.Tighten bolt (4) to the following torque. ... 320 30 N m (240 22 lb ft)Tighten bolts (5) to the following torque. ... 320 30 N m (240 22 lb ft)
Check the torque on bolt (4) .Tighten bolt (4) to the following torque. ... 320 30 N m (240 22 lb ft)
Tighten bolt (4) first.Tighten bolt (4) to the following required amount. ... 120 5 degreesTighten bolts (5) to the following required amount. ... 120 5 degrees
Illustration 3 g00290589
Detail A
Insert lock tab (6) .Note: Lock tabs can not be inserted into Area (A). The angle of Area (A) is 160 degrees.
Illustration 4 g00290566
(7) Oil plugs of crankshaftNote: The oil plugs of the crankshaft are held in place by a snap ring retainer. Ensure that the snap ring retainer is fully seated in the groove. (8) Crankshaft timing pin bracket (9) Crankshaft end play ... 0.60 to 0.20 mm (.024 to .008 inch)
Illustration 5 g00290567
Section B-BCrankshaft Timing Pin Bracket (10) The dowel extends from the crankshaft timing pin bracket at the following distance. ... 5.0 1.0 mm (.20 .04 inch)
Illustration 6 g00310823
Detail Of Throw Of Crankshaft (Pin Number 5) (11) Dimension A (12) Zone AWhen the engine is positioned and the engine is anchored, the following measurements must be taken between the cheeks of Pin Number 5:
Dimension A (11)
Zone A (12) Use the following procedure in order to measure the change in dimension A (11) within zone B (12) .
Rotate the counterweight as close as possible to the top center position. Ensure that the dial indicator does not interfere with the connecting rod.
Seat the pivot points of the dial indicator by spinning the dial indicator.
Set the dial indicator to zero.
Rotate the crankshaft from the starting position until the dial indicator approaches interference with the connecting rod on the opposite side. Observe the readings of the dial indicator while the crankshaft is rotated.
Rotate the crankshaft to the starting position. The dial indicator must return to zero. If the dial indicator does not return to zero repeat Steps 1 through 5.When the engine is at the ambient temperature, the change in dimension A must not exceed the following TIR. ... 0.08 mm (0.003 inch)Maximum crankshaft deflection ... 0.08 mm (.003 inch)