Doosan P158LE, P180LE, P222LE, PU158TI, PU180TI, PU222TI — 5.1. Fuel Injection System

5) PU180TI engine (1) Injection pump : 65.11101-7681 (A 401 890 895 BOSCH) Model : PE10P120A520LS7948 (0 412 629 816) Governor : RQV250…900PA1434 Plunger & barrel : 2 418 455 188 Delivery valve : 2 418 552 039 Feed pump : FP/KD22P80-1 (0 440 008 090) FP/KD22P78-2 (0 440 008 152) Prestroke : 4.5 ± 0.05 mm (2) Nozzle holder assembly : 65.10101-7053 (0 432 131 669) (3) Nozzle : 65.10102-6070 (0 433 171 169) (4) Injection pipe : 65.10301-6055B, 65.10301-6056B (5) Injection order : 1 – 6 – 5 – 10 – 2 – 7 – 3 – 8 – 4 - 9 Maintenance of Major Components - 122 - (A) Test condition for injection pump Nozzle & Holder Ass’y 1 688 901 019 Opening pressure :

212.6 bar Injection pipe(OD ,ID ,L) 1 680 750 075 8.0 x 3.0 – 1,000 mm Test oil ISO4113 Temperature :40 ± 2 °C (B) Engine standard parts Nozzle & holder Ass’y 65.10101-7053 Nozzle (5 x 0.418) 0 432 131 669 Spec. : 285.5 bar Injection pipe (OD, ID, L) 6 x 2 – 750 mm Rack diagram and setting valve at each point Refer to (3) Rack Diagram Check Point Rack position (mm) Pump Speed (rpm) Injection Q’ty on RIG (mm3 / 1,000st) Press. (mmHg) (A) Test condition for inj. Pump (B) Engine standard parts V1 11.55 ± 0.05 1,050 243.0 ± 3.0 Max.

power 1,500 V2 11.55 ± 0.10 800 240.4 ± 3.0 – 1,500 VS 8.96 ± 0.20 500 159.8 ± 1.0 – 0 LQ 6.15 ± 0.20 350 53.7 ± 15.0 Only 2/3/4/8 0 A3 7.10 ± 0.50 1,150 109.4 ± 15.0 Only 2/3/4/8 0 ST with Cap 100 127.5 ± 10.0 Only 2/3/4/8 0 Boost pressure dependent full –load stop (boost compensator spring operation point) Refer to (4) Boost pressure Check point Rack Position (mm) Pump speed (rpm) Injection Q’ty on RIG (mm3 / 1,000st) Press. (mmHg) (A) Test condition for inj.

Pump (B) Engine standard parts P1 11.55 ± 0.05 500 – – 1,500 P2 8.96 ± 0.05 500 – – 0 P3 9.9 ± 0.10 500 – – 275 P4 10.90 ± 0.05 500 – – 450 Weight Weight =630 g Lever ratio(min/max) Not fixed Idle spring k=14.03 N/mm Plunger 12 Middle spring k=57.14 N/mm Delivery valve retraction volume 90 mm3/st Inner spring k=21.98 N/mm Delivery valve opening pressure – LDA spring k=30.5 N/mm Delivery valve spring k = 7.2 N/mm Feed Pump Double action Timer None