Mercury MerCruiser D2.8L D-Tronic Service Manual page 328

ENGINE MECHANICAL
TIMING GEAR
IMPORTANT: The early model crankshaft gear has been superseded to a new gear.
A spacer is required behind the new gear to install.
1. Warm the gear in a suitable oven to 180 - 200 degrees C (356 - 392 degrees F.).
2. Ensure timing reference dots are facing the FRONT of the engine.
3. Ensure crankshaft keyway and woodruff key are aligned.
4. On early models, install the timing gear. On later models or if replacing the early gear,
install the new spacer and timing gear.
MAIN BEARING CARRIERS AND BEARINGS
1. Install new bearing shells into matching carrier halves.
2. Lubricate bearings with clean engine oil.
Page 3A-128
Description
Serial Numbers Breaks: for engines
using late model gear and spacer
a - Timing Gear
b - Spacer, If Equipped (Not shown)
a - Main Bearing Shells
b - Main Bearing Carrier - Matching Halves
D2.8L D-Tronic
0L344916 And Above 0L344986 and Above
b
a
a
SERVICE MANUAL NUMBER 22
D4.2L D-Tronic
b
90-860074--1 FEBRUARY 2002
70309
70307