300TD (123.193) L5-3.0L DSL Turbo (617.952) (1984)
Pre-combustion Chamber: Application and ID
NOTE: The prechambers of engines 616.912 and 617.912 may not be installed on these engines.
For identification, a code number (617/03) is shown at upper flange of pre-chamber.
In addition, the pre-chamber can be identified by means of the smaller bore (0 - 9 mm dia.) for glow plug
A Prechamber engines 616.912/617.912
B Prechamber engines 617.950/951/952
Six burner bores of different diameter are in place in pre-chamber lower half (burner neck) at different levels and angle positions.
H Firing duct
8 mm dia.
J Burner neck
16 mm dia.
K Burner bore
2 mm dia.
L Burner bore
3.5 mm dia.
M Burner bore
2.5 mm dia
N Burner bore
3.2 mm dia.
O Bore for glow plug
9 mm dia.
The firing duct (H) has a diameter of 8 mm, the burner neck (J) of 16 mm.
The prechamber bottom is additionally of cup-shaped design.
The cup-shape provides a uniform wall thickness within range of burner bores.
To improve smoke conditions under partial load, the prechambers in upper part were modified as follows:
-
Bore from 8 to 14 mm or 12 mm on engine 615