Doosan DE08TS - Page 78

DE08TS Diesel Engines Maintenance of Major Components
1. DE08TS (D100/120)
a. Injection pump ass’y : 65.11101-7388 (101609-904F)
- Injection pump : KP-PES6AD95B410RS2 (101062-8240)
- Governor : KP-EPRSV200-1300AQ39C311 (105411-215A)
- Fuel feed pump : KP-FP/KE-ADS (105210-5610)
- Plunger & barrel : 131153-1720
- Delivery valve : 131160-3620
b. Nozzle holder assembly : 65.10101-7088 (Y430 K02 049)
c. Nozzle : 65.10102-6058 (0432 131 644)
d. Injection pipe : 65.10301-6048C
e. Firing order : 1 - 5 - 3 - 6 - 2 - 4
f. Injection timing : BTDC 9˚
g. Governor adjustment
76
(A) Test condition
Nozzle & holder ass’y 105780-8140 Opening pressure : 175 bar
Injection pipe (ID x OD - L) - N2.0 x N6.0 – 600 mm
for injection pump
Test oil ISO4113 Temperature : 40 L 5C
Nozzle & holder Ass’y
65.10102-6058 Nozzle (7 x
N
0.22)
(B) Engine standard parts
65.10101-7088
1st: 180 kg/cm
2
2st : 280 kg/cm
2
Injection pipe (ID x OD - L) 65.10301-6048C N2 x N6 – 650 mm
Rack diagram and setting valve at each point
Rack Pump
Injection Q`ty VARIATION
Check
position speed
on RIG(mm
3
/st)
RATE (%)
Press.
point
(mm) (rpm)
(mmHg)
A
10.2
1100 95 L 2 - 250
Power B 8.2 400 20 L 1.5 - -
C R1(10.2) 550 (92) - 250
D
R1-0.7 550 (71) - -
E 14.0 100 (146) - -
Boost pressure : zero boost
Governor weight 740 g Lever ratio (min/max) 1 : 1.2 / 1 : 1.2
Governor spring (outer) k = 7.2 kgf/mm Governor spring (inner) k=2.5 kgf/mm
Idle spring (outer) k = 1.9 kgf/mm Idle spring (inner) -
Start spring k = 0.01 kgf/mm
Delivery
retraction pressure 70mm
3
/st , t=2.5
Plunger N9.5 Left hand 20 + 45 lead opening pressure 23.1 kgf/cm
2
Valve
spring k=1.63 kgf/mm