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Technical data: TD/TAD420VE, TAD620VE, TAD650VE, TAD660VE
27
Group 20
Injection pump
(420, 620)
Manufacturer .......................................................... Bosch
Designation ............................................................ PF 33
Length
A
: ............................................................... 59 mm
(2.3")
Basic measurement length
L
O
: .............................. 117.5 mm
(4.6")
Min length mm
L
FB
:
(A/100+117.5) – 117.5
............ >0
Injection pump
(420,620)
Basic measurements
The injection pumps are made by BOSCH and are of a single
type, that mean one for each cylinder. During the manufacturing of
the injection pumps, it is found that the length will varies from
pump to pump. This is due to manufacturing tolerances and this is
called
A/100
.
The pump length is defined by adding the basic measurement
L
O
with the tolerance
A/100
, that are written on the injection pump
(
L
FB
= L
O
+ A/100
).
Explanation:
L
FB
=
The exact point when injection pumps starts delivering fuel.
L
O
=
Basic measurement for the injection pumps
A/100 =
Manufacturing tolerances (written on the injection pump).
Example:
If
L
O
is 117.5 mm and
A/100
is 63.
This gives us the equation:
L
FB
= 117.5 + 0.63
The total length
L
FB
= 118.13
Injectors
Opening pressure:
TD420VE ............................................................ 22 MPa
(3190 psi)
TAD420VE/TAD620VE ....................................... 25 MPa
(3630 psi)
Max pressure: ........................................................ 160 MPa
(23200 psi)
Check leakage (for 10 sek):
TD420VE ............................................................ 20 MPa
(2900 psi)
TAD420VE/TAD620VE ....................................... 23 MPa
(3340 psi)
Numbers/bore Ø:
TD420VE ............................................................ 6 x 0.205 mm
(6 x 0.008")
TAD420VE/TAD620VE ....................................... 6 x 0.203 mm
(6 x 0.0079")
Fuel filter
Filtering size: ......................................................... 0.005 mm
(0.0002")
Pre-filter
Filtering size: ......................................................... 0.006 mm
(0.00024")
Summary of Contents for TAD420VE
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