Yanmar 4BY - Page 102

ENGINE
BY Service Manual
5-47
Camshaft and Timing Gear Train
1 – Exhaust Camshaft
2 – Intake Camshaft
3 – Guide Rail
4 – High-Pressure Fuel Pump
5 – Guide Rail Pin
6 – Upper Timing Chain
7–Sprocket
8 – Timing Case Cover Gasket
9 – Timing Case Cover
10–O-Ring
11 – Access Plug
12–Plug
13–Seal
14–Guide Rail
15 – Sprocket-to-High-Pressure Pump Nut
16–Lower Timing Chain
17 – Crankshaft Sprocket
18 – Lower Chain Tensioner
19 – Hydraulic Tensioner
20–Pivot Pin
21 – Upper Chain Tensioner
22 – Sprocket Retaining Screw