Doosan — Removal, dismantling and cleaning of nozzle
Repair & overhaul · Injector / nozzle
From a Doosan service manual covering: P158LE, P158LE-III, P180LE, P180LE-1, P180LE-II, P180LE-S, P222LE, P222LE-1, P222LE-S, PU158TI, PU180TI, PU222TI. Check it applies to your exact model before use.
Applies to: Doosan P158LE, Doosan P180LE, Doosan P180LE-II, Doosan P222LE, Doosan PU158TI, Doosan PU180TI, Doosan PU222TI, Doosan P158LE engine, Doosan P180LE-1 EASOB/QB engine, Doosan P222LE-1 EAYOB/QB engine, Doosan PU158TI EASOA/QA engine, Doosan PU180TI EASOA/QA engine
Before you start
- Do not hold your hands under the fuel jet.
- Do not inhale the atomized fuel.
Procedure
- Unscrew delivery pipe at nozzle holder and injection pump.
- Remove leak-off pipe.
- Release union screw of nozzle holder with special wrench.
- Remove nozzle holder with gasket from cylinder head.
- Clean nozzle body externally from soot and carbon; do not mix needle and body.
- Replace nozzle if needle seat indented or pintle damaged.
- Clean annular groove, needle seat and spray holes.
- Wash nozzle body and needle in clean test oil.
- Check nozzle discharge pressure in nozzle tester.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- New nozzle holder 300 + 8 kg/cm2
- Used nozzle holder 285 + 8 kg/cm2
Full service-parts list: Doosan P158LE →, Doosan P180LE →, Doosan P222LE →
Source: Doosan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.