Doosan P158LE -III, Operation & Maintenance Manual

Page: 127 / 165

Maintenance of Major Components - 124 -
6) PU222TI engine
(1) Injection pump : 65.11101-7319 (0 401 890 979E BOSCH)
– Model : PE12P120A520LS7972 (0 412 620 869)
– Governor : RQV250…900PA1434
– Plunger & barrel : 2 418 455 545
– Delivery valve : 2 418 559 045
– Feed pump : FP/KD22P78-1 (0 440 008 090)
FP/KD22P78-2 (0 440 008 152)
– Prestroke : 4.08 ± 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 : 65.10301-6113, 65.10301-6114A
(5) Injection order : 1 – 12 – 5 – 8 – 3 – 10 – 6 – 7 – 2 – 11 – 4 – 9
(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
(mm 3 / 1,000st)
Press.
(mmHg)
(A) Test condition
for inj. Pump
(B) Engine
standard parts
V1 12.00 ± 0.05 1,050 266.0 ± 3.0 Max. power 1,500
V2 12.00
±
0.10 800 266.0
±
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
(mm
3
/ 1,000st)
Press.
(mmHg)
(A) Test condition
for inj. Pump
(B) Engine
standard parts
P1 12.00 ± 0.05 500 – – 1,500
P2 8.96
±
0.05 500 – – 0
P3 9.25
±
0.10 500 – – 275
P4 11.20 ± 0.05 500 – – 600
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 mm 3 /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