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12
MODELTK 85 - - CALIBRATION DATA FOR BOSCH INJECTION PUMP
TYPE VE 4/11 F 1250 L 773 - - 99472102 / VE 4/11 F 1250 L 787 - - 500324962
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
K
KF
mm
- -
- -
(in.)
Plunger pre--lift from TDC:
mm --
rpm: 900
rpm: 900
rpm: 800
Delivery per 1000 shots: 61.2 to 62.2 cm
rpm: 300
Delivery per 1000 shots: 9.2 to 10.2 cm
rpm: 1300
Delivery per 1000 shots: 41.1 to 42.1 cm
rpm: 100
rpm
Internal pressure supply:
rpm
Advance stroke
rpm
Backflow for 10 s
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
r
ya
yb
30.1
36.5 to 38.5
37.4 to 42.6
(1.185)
(1.437 to
(1.4724 to
1.5157)
1.6772)
1. START OF DELIVERY
Pump rotation (viewed from drive side): coun-
ter--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.)
0.7 to 1.1 mm (0.0276 to 0.0433)
10. BACKFLOW
3
cm
(gal.)
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 250 to 253 bar (3626 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
F) at outlet.
Advance stroke: 0.7 to 1.1 mm (0.0276 to 0.0433 in.)
Internal pressure: 6.7 to 7.3 bar (97.2 to 105.9 psi)
3
(0.0135 to 0.0137 gal.) Spread: £ 3.5 cm
3
(0.002 to 0.0022 gal.)
3
(0.0090 to 0.0092 gal.) Spread: £ 3.5 cm
Delivery per 1000 shots: 33 to 73 cm
900
6.7 to 7.3 (97.2 to 105.9 psi)
900
450
18 to 30 (0.0040 to 0.0066)
to
ISO
7440--A61
. . . . . . . . .
: 30".
Injection order:1--3--4--2
3
(0.0008 gal.)
3
Spread: £ -- cm
3
(0.0008 gal.)
3
(0.0073 to 0.0161 gal.)
450
4.3 to 5.3 (62.4 to 76.9 psi)
1020
1.3 to 1.9 (0.0512 to 0.0748)
1250
24 to 40 (0.0053 to 0.0088)
--
o
o
± 1
C
(continued)
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