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Oil pump 160A.11B.00 of Weichai 6160 diesel engine for ship vessel
Section 1: Weichai R6160 Intake and Exhaust Valve Adjustment Chart
(1) For Firing Order: 1-5-3-6-2-4
| Cylinder No. | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| At TDC of Cylinder 1 (Expansion Stroke) | Intake & Exhaust | Intake | Exhaust | Intake | Exhaust | - |
| At TDC of Cylinder 6 (Expansion Stroke, 360° rotation) | - | Exhaust | Intake | Exhaust | Intake | Intake & Exhaust |
(2) For Firing Order: 1-4-2-6-3-5
| Cylinder No. | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| At TDC of Cylinder 1 (Expansion Stroke) | Intake & Exhaust | Exhaust | Intake | Exhaust | Intake | - |
| At TDC of Cylinder 6 (Expansion Stroke, 360° rotation) | - | Intake | Exhaust | Intake | Exhaust | Intake & Exhaust |
Section 3: 6160 Fuel Injection Timing Adjustment
Fuel injection timing adjustment procedure:
Remove the high-pressure fuel pipe from cylinder 1 and install a test tube on the delivery valve holder.
Set the fuel pump governor lever to maximum fuel delivery.
Rotate the fuel pump plunger with a screwdriver until fuel appears in the test tube; then stop.
Loosen the cylinder head vent screw and turn the flywheel in the engine's working direction.
When the fuel in the glass tube just begins to rise, stop rotating; the pointer reading indicates the fuel injection start point.
Check each cylinder in sequence according to the firing order (1-5-3-6-2-4 or 1-4-2-6-3-5).
Section 4: Common Faults and Troubleshooting
(A) Engine Fails to Start
| No. | Cause Area | Troubleshooting Method |
|---|---|---|
| 1 | Usage | |
| (1) Battery low | Check battery gravity (1.28–1.30); insulate in winter | |
| (2) Start lever not in position | Rotate the handle to start position | |
| (3) Engine under load | Disengage load | |
| (4) High oil viscosity | Choose appropriate oil or preheat | |
| (5) Air in fuel system | Bleed air from system | |
| (6) Water in diesel | Drain water from fuel tank and filters | |
| (7) Incorrect diesel type | Choose diesel based on season/location | |
| 2 | Fuel System | |
| (1) Leaky fuel pipe joints | Tighten connections | |
| (2) Blocked pipes | Clean or blow through | |
| (3) Blocked fuel filters | Clean or replace filters | |
| (4) Injector spray issue | Adjust or replace needle valve parts | |
| (5) Incorrect injection timing | Adjust per specifications | |
| (6) Damaged pump/injector | Repair or replace | |
| 3 | Others | |
| (1) Valve leakage | Reseat valves and adjust clearance | |
| (2) Cylinder leakage | Check gasket, tighten bolts | |
| (3) Broken valve spring | Replace spring | |
| (4) Piston ring leakage | Replace rings | |
| (5) Piston seizure | Disassemble and repair | |
| (6) Water in cylinder | Remove head, drain water, find cause |
(B) Engine underpower
| No. | Cause Area | Troubleshooting Method |
|---|---|---|
| 1 | Usage | |
| (1) Low RPM | Adjust to rated speed | |
| (2) High altitude or temperature | Apply correction factor using power correction chart | |
| 2 | Fuel System | |
| (1) Injector failed | Adjust or repair | |
| (2) Uneven fuel delivery | Adjust or repair pump | |
| (3) Worn fuel pump | Adjust gear rack or replace plunger | |
| (4) Blocked fuel filters | Inspect, clean, adjust or replace | |
| (5) Wrong fuel type | Choose correct grade for environment | |
| (6) Incorrect timing | Check and adjust | |
| 3 | Valve Timing | |
| (1) Dirty air filter | Clean thoroughly | |
| (2) High exhaust back pressure | Redesign exhaust system | |
| (3) Valve leakage | Inspect and reseat valves | |
| (4) Incorrect valve timing | Check and correct timing | |
| 4 | Other Factors | |
| (1) Low compression | Adjust or replace piston rings | |
| (2) Cylinder scuffing | Repair or replace | |
| (3) Inadequate cooling | Check belts, cooling system | |
| (4) Poor lubrication | Repair or clean lubrication system |
