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8
MODEL TL80 - - BOSCH INJECTION PUMP CALIBRATION DATA
TYPE VE 4/11 F 1250 L 774 AND TYPE VE 4/11 F 1250 L 788
ASSEMBLY DATA
Pump timing on engine: delivery start 4° ± 0.5° before
T.D.C. of cylinder 1 compression stroke.
Plunger pre--lift for pump timing on engine: 0.04 in. (1
mm) from B.D.C. (with tools 380000228 --
380000229).
Cylinder No. 1 delivery line union on pump: marked
with letter A.
ASSEMBLY DIMENSIONS
SYMBOL
SVS
KF
(max)
inch (mm)
0.181
0.209 to
(4.6)
0.224
(5.3 to
5.7)
Plunger pre--lift from BDC:
0.007 ± (0.2 ± 0.02 mm) (0.04)
rpm: 800
rpm: 800
rpm: 750
rpm: 350
rpm: 1350
rpm: 100
Rev/min
Internal pressure
Rev/min
Advance stroke
Rev/min
Backflow
cm
NOTE: The values shown above in brackets must be used for checking purposes only.
SECTION 10 - - ENGINE - - CHAPTER 1
MS
ya
yb
0.055 to
1.49 to
1.73 to
0.070
1.57
1.74
(1.4 to
(37.9 to
(44 to
1.8)
39.9)
44.1)
1. START OF DELIVERY
Pump rotation (viewed from drive side):
counterclockwise
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. TRANSFER PRESSURE PROGRESSION
psi (bar)
9. INJECTION ADVANCE PROGRESSION
inch. (mm)
0.122 to 0.138
10. BACKFLOW
400
3
41.6 to 86.1 (26.6 to 101)
CALIBRATION TEST CONDITIONS
Test bench conforming to ISO 4008/1 .../2
Injectors
conforming
[(1.688.901.027 with pad ∅ 0.02 in. (0.5 mm)].
Injector pressure setting 3582 to 3670 psi
(247 to 253 bar).
Fuel supply pressure: 5.1 ± 0.7 psi
0.35 ± 0.05 bar.
Delivery pipes (conforming to ISO 4093.2):
0.2 x 0.07 x 17.7 in. (6 x 2 x 450 mm).
Graduate drain time:
Test liquid: ISO 4113 at a temperature of
111.2° ± 39.2 °F (44° ± 4 °C) at outlet.
Advance stroke: 0.122 to 0.138 in. (3.1 to 3.5 mm)
Internal pressure: 68.1 to 76.8 psi (4.7 to 5.3 bar)
3
52.5 to 53.5
3
6 to 10
3
37 to 41
Delivery per 1000 shots: cm
800
68.1 to 76.8
46.4 to 55.1
(4.7 to 5.3)
(3.2 to 3.8)
800
0.007 to 0.039
(3.1 to 3.5)
(0 to 0.051)
[0.2 to 1.0 (0 to 1.3)]
to
ISO
7440--A61
30 sec.
Injection order: 1--3--4--2
3
Spread: cm
-- 3.5 (4.0)
3
Spread: cm
≤ 3.5 (3.5)
3
Spread: cm
3
65 to 115
500
1250
100 to 108.7
(6.9 to 7.5)
500
1250
0.272 to 0.295
(0.256 to 0.311)
[6.9 to 7.5 (6.5 to 7.9)]
1250
55 to 138 (40 to 153)
--
(continued)
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