Jx80 Model - Calibration Data For Bosch Injection Pumptype Ve 4/12 F 1250 L 985 - - 504041416; Tools - Case HI JX60 Service Manual

10
JX80 MODEL - - CALIBRATION DATA FOR BOSCH INJECTION PUMP
ASSEMBLY DATA
Pump timing on engine: delivery start 4
T.D.C. of cylinder 1 on compression stroke.
Plunger pre--lift for timing on engine: 1 mm from BDC
(with tools 380000228 -- 380001601).
Delivery union of the pump corresponding to cylinder
no. 1: marked with letter A.
ASSEMBLY DIMENSIONS
SYMBOL K A
mm 3.64 to 1.4 to
3.76 1.5
CALIBRATION TEST CONDITIONS
Plunger pre--lift from BDC:
mm --
rpm: 1250
rpm: 1000
rpm: 1000
rpm: 325
rpm: 1250
rpm: 100
Rev/min
Advance stroke
Rev/min
Internal pressure
Rev/min
Backflow
Note: The values shown above in brackets must be used for checking purposes only.
6- 62720 - - 09 - - 2006
SECTION 10 - - ENGINE - - CHAPTER 1
TYPE VE 4/12 F 1250 L 985 - - 504041416
o o
± 0.5
before
MS ya yb
0.5 to 0.9 38,9 43,0
1. START OF DELIVERY
Pump rotation (viewed from drive side):
anticlockwise
2. ADVANCE REGULATOR STROKE
3. FUEL SUPPLY PUMP PRESSURE
4. FULL LOAD DELIVERY
Delivery per 1000 shots: cm
5. SPREAD GOVERNOR AT IDLE SPEED
Delivery per 1000 shots: cm
6. SPREAD GOVERNOR AT MAXIMUM SPEED
Delivery per 1000 shots: cm
7. DELIVERY AT STARTING SPEED
8. INJECTION ADVANCE PROGRESSION
mm
9. TRANSFER PRESSURE PROGRESSION
bar
10. BACKFLOW
l/h
Test bench conforming to ISO 4008/1 .../2
Injectors conforming
(1.688.901.027 with calibrated pad ∅ 0.5 mm
(0.0197 in.)).
Injector pressure setting 250 to 253 bar
(3625.925 to 3699.4361 psi)
Fuel supply pressure:
0.35 ±0.05 bar (5.0763 ± 0.7252 psi).
Delivery pipes (conforming to ISO 4093.2):
6 x 2 x 450 mm (0.2362 x 0.787 x 17.7165 in.).
Graduate drain time : 30".
Test liquid: ISO 4113 at a temperature of 55
(131° ± 33.8°F).
Advance stroke: mm 2.0 to 3.2
Internal pressure: bar 6.7 to 8.1
3
65.2 to 70.3 Spread: cm
3
4.0 to 18.0 Spread: cm
3
60.0 to 66.0 Spread:--
Delivery per 1000 shots: cm
1000
0.5 to 1.7
1000
6.7 to 8.1 4.1 to 5.5
400
16 to 30
to ISO 7440--A61
Injection order:1--3--4--2
3 ≤ 3.5
3
≤ 4.5
3
75 to 115
1250
2.0 to 3.2
400
1250
21 to 39
--
o o
± 1
C
(continued)