Technical Data: TD/TAD520, TAD530/531/532
50
Group 20
Injection pump
Manufacturer ........................................................ Bosch
Designation .......................................................... PF 33 L
Length A: .............................................................. 54 mm (2.12")
Basic measurement length L
O
: ............................ 143 mm (5.63")
Min length L
FB
: (A/100+143) – 143 ....................... >0 mm
Injection pump
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
= 143 + 0.63
The total length L
FB
= 143.63
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