6. Refill the crankcase with SAE 10 en-
4. Run the engine for five minutes.
gine oil after the drain plug is replaced,
and run the engine at the same fast idle
5. Drain the cooling system.
speed for ten or fifteen minutes. Then,
stop the engine and drain the oil thor-
6. Repeat Steps 3 through 5.
oughly.
7. Fill the cooling system with clean wa-
7. Remove and discard the filter element,
ter.
clean the filter shell and install a new el-
ement.
8. Let the engine run five minutes.
8. Install the drain plug and fill the
9. Drain the cooling system completely.
crankcase to the proper level with the oil
recommended for normal engine
10. Install the engine thermostat.
operation.
11. Close all of the drains and refill the
engine with fresh coolant.
9. To test the effectiveness of the clean-
ing procedure, it is recommended that
the engine be started and run at a fast
idle (1,000 to 1,200 rpm) for approxi-
LUBRICATION SYSTEM
mately 30 minutes. Then, stop and im-
mediately restart the engine. There is a
When the engine lubricating system has
possibility that the engine is not entirely
been contaminated by an ethylene glycol
free of contaminant deposits if the start-
antifreeze solution or other soluble mate-
rial, the following cleaning procedure,
i n g speed is slow.
using Butyl Cellosolve, or its equivalent,
i s recommended.
10. If the procedures for cleaning the
lubricating oil system were not success-
ful, it will be necessary to disassemble
the engine and to clean the addicted
WARNING
parts thoroughly.
Use extreme care in the handling
NOTE
o f these chemicals to prevent seri-
o u s injury to the person or damage
Make certain that the cause of the
to finished surfaces.
Wash off
internal coolant leak has been cor-
s p i l l e d fluid immediately with clean
rected before returning the engine
water.
to service.
If
the
engine
is
still
in
running
condition, proceed as follows:
W A T E R PUMP
1. Drain all of the lubricating oil.
2. Remove and discard the oil filter ele-
Description
ment. Clean and dry the filter shell and
i n s t a l l a new element.
The centrifugal-type water pump
(Figure 11F-2 on page 11F-6) circulates
the engine coolant through the cylinder
3. Mix two parts of Butyl Cellosolve, or
block, cylinder head, radiator, and the
its equivalent, with one part SAE 10 en-
oil cooler. The drive end of the pump
gine oil. Fill the engine crankcase to the
shaft
is
supported
by
a
sealed
proper operating level with the mixture.
double-row combination radial and thrust
ball bearing. The pump shaft serves as
4. Start and run the engine at a fast idle
the inner race of the bearing.
(1,000 to 1,200 rpm) for 30 minutes to
one hour. Check the oil pressure fre-
The water pump uses a ceramic insert
quently.
and spring loaded seal assembly. The
spring-loaded water pump seal assembly
5. After the specified time, stop the en-
bears against the insert. The ceramic
gine and immediately drain the crankcase
insert prevents coolant from passing
and the filter. Sufficient time must be
along
the
shaft
to
the
sealed
ball
allowed to drain all of the fluid.
bearing.
