Chapter 1 Operation And Handling; Newengine; Checkup And Preparations Prior To Starting - Mitsubishi 4DQ50 Service Manual

CHAPTER 1 OPERATION AND HANDLING
1. NEW ENGINE
Prior to putting it in use, check as follows:
1)
See if there are any loose bolts or nuts.
2)
Lubricate according to Lubrication Table given later.
3) - Fill fuel tank with clean fuel and bleed (or prime) fuel system.
4)
Fill radiator with clean soft water as a ccolant.
When air temperature is expected to fall below the freezing point, use an antifreeze.
The service life of new engine much depends upon how it is handled in the initial
runs. So, lubricate, and check it with particular care (Refer to Lubrication and Service
Tables), and before it covers 60Hr, follow the instructions given below, taking care not
to overstrain it.
1)
After starting, never apply load immediately without warming it up well by idling.
2) Don't run it at high speed.
3) Run under some
70%
of load at the maximum.
-2.
CHECKUP AND PREPARATIONS PRIOR TO
STARTING
Prior to starting the day's operations, check as
follows with the engine placed as level as possible.
1)
Engine oil level
Pull out oil level gauge and wipe; then put it
in and out again to check oil level. Oil level must
be above mid-point between upper "FULL" line
and lower one. If near or below the mid·point,
refill up to upper line "FULL".
Oil level difference between these two lines
corresponds to approx. 1 litre.
After refilling, wait for all added oil to run
Fig. 1-1
Ch~king
oil level
down into oil pan and for oil level to settle, before checking it again.
2) Cooling water level
Optimum -water level is 20'-30mm below the bottom of water inlet for pressure
type radiator, and up to overflow pipe for non-pressure type one.
Remarkable decrease of cooling water means leak somewhere, hence the necessity
to repair immediately.
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