involves a sharp drop
of
its capacity. Remember especially
that
a decrease of
specific gravity
in
inadequate charge might make electrolyte ready
to
freeze
in
a cold area. (Refer
to
Sect.
8,
"Handling
in
Cold Weather", Chap. 1).
3) Good battery maintenance requires moreover such cares
as
mentioned below.
a)
Keep
battery always clean and dry.
b)
Connect terminals always firmly.
Corroded parts
of
terminals can be easily cleaned by washing with solution of
sodium bicarbonate. But be careful not
to
splash it into cells. After polishing
terminals
well, connect them firmly and
give
a thin coating of grease. Never
try
to
hammer
or
hit them off or on.
c)
Don't
put
any metal articles such
as
pliers and spanners on battery. Such
careless doing
will
short-circuit it with a spark and might cause a serious
accident,
to
say nothing of early break-down of battery, nor bring naked fire
near it.
7 RE-SCREWING OF
MAIN
BOLTS
With initial fatigue
of
gaskets and packings
in
newly assembled engine and with its long
use,
bolts
will
get loose.
To
prevent accidents
ariSing
therefrom, check main bolts at regular
intervals
to
see
if
they are working tight enough and
if
loose, screw again accofdingly. Apart
from this, always
give
attention
to
those bolts
that
can be seen from outside. Re-screwing of
main bolts must be done according
to
the
given
below clamping Torque List with fit torque
wrenches, so should be entrusted
to
your dealer
or
a service shop.
Clamping
Torque
List
for
Model
4DQ50
Engine
Clamping
Torque
Remarks
Bolted
Parts
Pitch
kgm
ft-Ib
Cylinder head
12P-1.75
12
86
See
Par.
7-1
below.
Main
bearing
caps
12P-1.75
8.5
60
Connecting
rod
caps
10P-1.5
5.5
38.5
Flywheel
12F-1.5
8.5
60
Nozzle
holders
24P-2.0
5
35
Nozzle
tip
retaining
nuts
22P-1.5 7
50
Delivery
valve
holders
18P-1.5 3
22
-
55-
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