MTU Detroit Diesel 183 Series Technical Publication page 302

Group 07
Subgroup 6712
Page 2
20080/1 E 98-12
Note:
Combustion deposits around the nozzle openings
strongly influence the spray pattern.
Connect test line (6) to injector (5). Fill test-oil container
(7) with ISO 4113 test oil.
Carry out pre-check, opening-pressure check, leak test
and visual inspection of nozzle openings.
Pre-check
Close shut-off valve (2) on pressure gauge (1).
Push pump lever (4) of nozzle tester (3) strongly
downwards several times.
This should get rid of any minor malfunctions, e.g. the
nozzle needle sticking, and effect a short flushing of the
nozzle holder and nozzle with clean test oil.
Task Description