WEICHAI WP3.9C User Manual

Operation and Maintenance Manual for WP2.1C/WP3.9C Series Marine Diesel 
5
1.3 Main Engine Data
Model WP2.1C27E1 WP2.1C35E1
Lub.oil pressure
rated conditions（KPa） 200-400
low idle speed (kPa) ≥50
Lub.oil temperature（℃） ≤95
Cooling water temperature
75～95
Exhaust temperature（℃） ≤480
Tightening
torque
specifications：
（N.m）
Cylinder head bolts 95～105
Main bearing cover bolts 120～135
Connecting rod bolts 60～70
Flywheel bolts 60～70
Crankshaft pulley clamping
blt
140～160
Valve
timing(crankshaft
angle, degrees)
Intake valves open(Before
)
14
Intake valves close(After)
42
Exhaust valves open(Before
)
42
Exhaust valves close(After)
14
Valve
clearances (on
cold
)
（
mm
）
Intake valves（mm）
0.20～0.25
Exhaust valves（mm）
0.25～0.30
Fuel delivery advance angle 13±1 16±1

WEICHAI WP3.9C Specifications

General

Brand	WEICHAI
Model	WP3.9C
Category	Engine
Language	English