6C-52 ENGINE FUEL AND EMISSION CONTROL SYSTEM
Pressure limiting valve control and regulation
1) Plug the exhaust gas and oil lubrication inlets and outlets.
2) Thoroughly clean the external part of the turbocharger using
an anti-rust fluid.
3) Disconnect pipe (2) from its join to pressure regulating valve
(1) and attach in its place the test pipe (A) ref. 790996 or
similar
4) On the valve rod end (5), place the feeler of a test meter (6)
with a magnetic base and put the meter to zero.
5) Introduce into the valve (1) the specified pressure. Make sure
that this pressure is maintained throughout the test - if not,
replace the valve.
Pressure for minimum lift of rod valve:
Pink Blue
Mechanical inject. Common Rail
Turbo KKK - -
Turbo Mitsubishi 1,29 ± 0,019 bar 1,21 ± 0,02 bar
Pressure for maximum lift of rod valve:
Pink Blue
Mechanical inject. Common Rail
Turbo KKK 1,3 ± 0,002 bar 1,3 ± 0,02 bar
Turbo Mitsubishi 1,45 ± 0,04 bar 1,45 ± 0,04 bar
Minimum lift for limiting rod valve:
Pink Blue
Mechanical inject. Common Rail
Turbo KKK - -
Turbo Mitsubishi 1 mm 1 mm
Maximum lift for limiting rod valve:
Pink Blue
Mechanical Inject. Common Rail
Turbo KKK 3,5 mm 2,2 mm
Turbo Mitsubishi 5 mm 5 mm
1
2
A
1
5
6
KKK TURBOCHARGER
MITSUBISHI TURBOCHARGER
7
8
• For the Mitsubishi turbocharger, adjust the rod valve (8) lift by
loosening screw (7) and turning the rod.
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