MASSEY FERGUSON MF 135 - Page 57

Fig. 70 - Cooling System
Fig. 71 - Radiator Drain Cock
Fig. 72 - Engine Drain Cock
- 48 -
Draining the Cooling System
(See Figs. 70, 71 and 72)
To drain the cooling system, remove the
radiator cap, open the drain cock in the bot-
tom of the radiator and loosen the engine
drain cock.
Thermostat
A defective thermostat will cause slow
warm-up and incorrect operating tempera-
tures, resulting in excessive condensation
and crankcase dilution. This leads to exces-
sive wear on engine parts. Operating the en-
gine wi th the thermostat removed will do
likewise.
The thermostat is located in the cast
iron body between the cylinder head and the
upper body between the cylinder head and the
upper radiator hose on both the gasoline and
diesel engines. If the thermostat requires
replacement, always use a new gasket be-
tween the head and the cast iron body. In-
spect radiator hoses and hose clamps; re-
place hoses and tighten clamps, as neces-
sary.
Checking Radiator (See Fig. 70)
£.. The engine has a pres sure cooling sys-
tem. To maintain this pressure, the filler
cap must be fitted tightly on the neck of the
radiator.
A
CAUTION: NEVER remove ra-
diator cap when engine is HOT
without letting pressure escape,
by turning cap to the first
notch, and waiting a few min-
utes. Coolant can spurt out
with the sudden release of
pressure and cause serious in-
jury by scalding. PRACTICE
SAFETY.
The level of anti-freeze solution, or wa-
ter, in the system should be checked daily.
The lisvel of coolant should be 1 inch above
the radiator core.
When anti -freeze solution is used in the
system, fill the radiator with equal parts of