MerCruiser 305 CID (5.0L), Руководство по обслуживанию

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5.0l / 305 cid / 5.7l / 350 cid ENGINES SERVICE MANUAL NUMBER 24
Page 3A-76 90-861327--1 OCTOBER 1999
Installation
1. Remove timing sprocket or gear from old crankshaft and reinstall on new crankshaft as
outlined.
2. On jackshaft models, if old pilot bushing is to be reused, bushing can be removed without
damage. by
a. Fill pilot bushing cavity with grease, then insert an old transmission input shaft in
bore of bushing and hit it with a hammer. This will create hydraulic pressure in pilot
bushing cavity that should force bushing out.
IMPORTANT: Be sure that all bearings and crankshaft journals are clean.
3. Install main bearings in engine block.
72359
a
b
c
Main Bearing Inserts
a - Lower Bearing Insert (Install in Cap)
b - Upper Bearing Insert (Install in Block)
c - Oil Groove
4. Carefully lower crankshaft into place. Be careful not to damage bearing surface.
5. Check clearance of each main bearing, following procedure outlined under “Main Bear-
ings.” If bearing clearances are satisfactory, apply engine oil to journals and bearings.
6. Install main bearing caps.
7. Torque bolts to specifications. When tightening rear main bearing cap, follow procedure
outlined under “Main Bearings.”
8. Check crankshaft end play as outlined.
9. Install rear main seal retainer and seal.
10. Torque fasteners to 106 lb-in. (12 Nm).
11. Check clearance for each connecting rod bearing, following procedure under “Connect-
ing Rod Bearings.” If bearing clearances are satisfactory, apply engine oil to journals and
bearings.
12. Coat the bearing surface with oil, install the rod cap.
13. Torque nuts to 20 lb-ft (27 Nm) on first pass. Then, torque nuts an additional 55 degrees
angular torque.
14. Turn crankshaft so mark on timing sprocket or gear is facing camshaft.
Index