Operation Manual

Job Card No.:
Engine:
Filing No.:
Piston Coolant Nozzle
Inspection
0178-16-10 1980
Inspection
To ensure proper piston cooling, check that
the coolant jet centrally enters the inlet hole of
the piston. Make sure, therefore, the coolant
nozzle is properly located.
Job:
Inspecting the Check Pin
Make sure the bottom end of pin (2) is free from
defects and the whole pin is straight. Install pin (2) in
a spare nozzle and turn by hand. If the upper end is
wobbling, straighten the pin.
Alignment Test
Remove crankcase door. Move piston to TDC.
Place mirror (4) so that coolant inlet (1) in piston and
coolant nozzle (3) are clearely to be seen.
Fix a string to pin (2) and secure string to the engine
exterior, to ensure that the pin cannot fall into the
sump.
Carefully lower the piston by turning the crankshaft
by about 30° crank angle, while guiding the pin ends
into coolant inlet (1) and coolant nozzle (3).
Check that pin can be rotated freely, i.e. without
contacting the check valve. Failing this, correct
nozzle position with the aid of the aligning tool
and the mirror.
Remove check pin after test!
© 0385
02.15.01
S/BVM 628
Tools:
- Pocket lamp,
- Mirror (Section 1.8),
- Check pin (Section 1.8),
- Aligning tool (Section 1.8).
© 51 271 0