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10
MODELTK 76 - - CALIBRATION DATA FOR BOSCH INJECTION PUMP
TYPE VE 4/11 F 1250 L 794 - - 99472104 / VE 4/11 F 1250 L 810 - - 500324959
ASSEMBLY DATA
Pump timing on engine: delivery start 9
TDC of cylinder 1 compression stroke.
Plunger pre--lift for timing on engine: 1 mm (0.0394
in.) from BDC (with tools 291754 -- 291755).
Cylinder No.1 delivery line union on pump: marked
with letter A.
ASSEMBLY DIMENSIONS
SYMBOL
SVS
K
mm
- -
3.1 to 3.5
(in.)
(0.1220 to
0.1378)
Plunger pre--lift from TDC: mm --
rpm: 800
rpm: 800
rpm: 800
Delivery per 1000 shots: 65.1 to 66.1cm
rpm: 325
Delivery per 1000 shots: 7.5 to 8.5 cm
rpm: 1270
Delivery per 1000 shots: 43.5 to 44.5 cm
rpm: 100
rpm
Internal pressure
rpm
Advance stroke
rpm
Backflow
Note: the values shown above in brackets must be used for checking purposes only.
603.54.381.00 - - 05 - - 2001
SECTION 10 - - ENGINE - - CHAPTER 1
o
o
± 0.5
before
MS
ya
yb
0.9 to 1.3
36.5 to
38.8 to 44
(0..0354 to
38.5
(1.5276 to
0.0512)
(1.437 to
1.7323)
1.5157)
1. START OF DELIVERY
Pump rotation (viewed from drive side):
counter--clockwise
2. ADVANCE REGULATOR STROKE
3. FUEL SUPPLY PUMP PRESSURE
4. FULL LOAD DELIVERY
5. SPREAD GOVERNOR AT IDLE SPEED
6. SPREAD GOVERNOR AT MAXIMUM SPEED
7. DELIVERY AT STARTING SPEED
8. TRANSFER PRESSURE PROGRESSION
bar (psi)
9. INJECTION ADVANCE PROGRESSION
mm (in.)
10. BACKFLOW
3
cm
(gal.) 44.1 to 77.2 (0.0097 to 0.017)
CALIBRATION TEST CONDITIONS
Test bench conforming to ISO 4008/1 .../2
Injectors
conforming
(1.688.901.027 with calibrated pad Æ 0.5 mm --
0.0197 in.).
Injector pressure setting 247 to 253 bar (3582 to
3669 psi).
Fuel supply pressure:
. . . . . .
0.35 + 0.05 bar (5.1 + 0.7 psi).
Delivery pipes (conforming to ISO 4093.2):
. . . . . .
6 x 2 x 450 mm (0.2362 x 0.0787 x 17.716 in.).
Graduate drain time
Test liquid: ISO 4113 at a temperature of 45
o
o
(113
± 33.8
Advance stroke: 0.7 to 1.1 mm (0.0276 to 0.0433 in.)
Internal pressure: 5.9 to 6.5 bar (85.6 to 94.3 psi)
3
(0.0143 to 0.0145 gal.)
3
(0.0016 to 0.0019 gal.)
3
(0.0096 to 0.0098 gal.) Spread: -- cm
Delivery per 1000 shots: 75 to 105 cm
800
5.9 to 6.5 (85.6 to 94.3 psi)
800
0.7 to 1.1 (0.0276 to 0.0433)
400
to
ISO
. . . .
: 30".
F) at outlet.
Injection order:1--3--4--2
3
Spread:-- 3.5 cm
(-- 0.0008 gal.)
3
Spread: £ 3.5 cm
3
3
(0.0165 to 0.0231 gal.)
400
3.8 to 4.4 (55.1 to 63.8 psi)
1200
60.7 to 104.8 (0.0134 to
0.0231)
7440--A61
--
o
o
± 1
C
(0.0008 gal.)
(continued)
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