Case HI JX80 - JX95 Model Injection Pump Calibration Data

14
SECTION 10 -- ENGINE -- CHAPTER 1
6-62720 -- 09 -- 2006
JX95 MODEL -- CALIBRATION DATA FOR BOSCH INJECTION PUMP
TYPE VE 4/12 F 1250 L 952 -- 504042718
ASSEMBLY DATA
Pump timing onengine: delivery start 0
o
± 0.5
o
before
T.D.C. of cylinder 1 on compression stroke.
Plunger pre--lift for timing on engine: 1mm 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 MS ya yb
mm 3.64 to
3.76
0.98 to
1.02
0.6 to
1.0
36.5 to
38.5
41.3 to
46.7
CALIBRATION TEST CONDITIONS
Test bench conforming to ISO 4008/1 .../2
Injectors conforming to ISO 7440--A61 --
(1.688.901.027 with calibrated pad ∅ 0.5 mm)
(0.0197 in.).
Injector pressuresetting 250 to 253 bar (3625.925 to
3741.9546 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
o
± 1
o
C
(131° ± 33.8°F).
1. START OF DELIVERY
Plunger pre--lift from B.D.C.: mm -- Pump rotation (viewed from drive side):
anticlockwise
Injection order:1--3--4--2
2. ADVANCE REGULATOR STROKE
rpm: 1250 LDA pressure: kPa 100 Advance stroke: mm 2.2 to 3.4
3. FUEL SUPPLY PUMP PRESSURE
1100 rpm LDA pressure: kPa 100 Internal pressure: bar 6.5 to 7.9
4. FULL--LOAD DELIVERY WITH BOOSTER PRESSURE
rpm: 900 LDA pressure: kPa 100 Delivery per 1000 shots: cm
3
75.5 to 80.5 Spread: cm
3
≤ 3.5
5. FULL--LOAD DELIVERY WITHOUT BOOSTER PRESSURE
rpm: 500 LDA pressure: kPa 0 Delivery per 1000 shots: cm
3
66.0 to 72.0 Spread: cm
3
--
6. SPREAD GOVERNOR AT IDLE SPEED
rpm: 350 LDA pressure: kPa 0 Delivery per 1000 shots: cm
3
8to23 Spread: cm
3
≤ 5.5
7. SPREAD GOVERNOR AT MAXIMUM SPEED
rpm: 1250 LDA pressure: kPa 100 Delivery per 1000 shots: cm
3
66.0 to 72.0 Spread: cm
3
--
8. DELIVERY AT STARTING SPEED
rpm: 100 Delivery per 1000 shots: cm
3
75 to 115
9. INJECTION ADVANCE PROGRESSION
LDA pressure kPa 100
Rev/min 1100 1250
Advance stroke mm 1.4to2.6 2.2to3.4
10. TRANSFER PRESSURE PROGRESSION
LDA pressure kPa 100
Rev/min 500 1100 --
Internal pressure supply: bar 4.1to5.5 6.5to7.9 --
11. BACKFLOW
Rev/min 500 1250
LDA pressure kPa 100 100
Backflow for 10 sec. l/h 18 to 32 21 to 39
(continued)
Note: The values shown above in brackets must be used for checking purposes only.