Diesel Automatic Parking; Abnormal Sound During Running Of Diesel Engine - Baudoulin 4M11G Maintenance Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
3-3 Late fuel supply timing and serious
after-combustion
3-4 Incorrect valve clearance or poor sealing
status of valve
3-5 Blockage of air filter
3-6 Poor fuel quality

3.2.7 Diesel Automatic Parking

SN.
1 No rotation of crankshaft after stop
1-1 Seizure between crankshaft and bushing
1-2 Seizure between piston and cylinder sleeve
2 Easy rotation of crankshaft after stop
2-1 Air content in fuel system.
2-2 Blockage of fuel system
2-3 Seizure of fuel injection pump rack or plunger Overhaul fuel injection pump
2-4 Blockage of intake pipe or air filter
2-5 Diesel runs out

3.2.8 Abnormal Sound during Running of Diesel Engine

SN.
1 Rhythmic clear sound within cylinder due to earlier fuel injection
timing
2 Low unclear knocking sound within cylinder due to later fuel
supply timing
3 Excessive clearance between valve and rocker and metallic
knocking sound within valve mechanism
4
Excessive clearance between piston and cylinder
5 Excessive clearance between piston pin and connecting rod small Replace connecting rod bushing and
Cause
Cause
pump and fuel injectors.
Adjust fuel supply advance angle
Check valve clearance and valve airtightness.
Clean air filter element
Replace high quality fuel
Troubleshooting
Overhaul and replace parts
Check and replace piston, piston ring, and cylinder sleeve.
Bleed air and check pipeline airtightness.
Clean and replace fuel filter element
Check and clean air filter
Add diesel
Check and adjust injection time
Check and adjust injection time
Check
clearances
Check cylinder clearance and replace
piston or cylinder sleeve.
27
Troubleshooting
and adjust the valve