Coolant (Deac) - Change - Perkins 1206A-E70TTA Operation And Maintenance Manual

M0090743
Illustration 35
Typical example
(A) Tensioner stop
(B) Tensioner body stop
(C) Tensioner body stop
(D) Tensioner stop
2. Ensure that the tensioner has full movement of
travel from one stop to another stop. Using a
constant force the tensioner should move
smoothly between the tensioner stop and the
tensioner body stop.
3. Ensure that the idler pulley (2) is securely installed.
Visually inspect the idler pulley for damage.
Ensure that the idler pulley can rotate freely and
that the bearing is not loose. If necessary, replace
damaged components.
Install the belt. Refer to Disassembly and Assembly,
"Alternator Belt - Remove and Install".

Coolant (DEAC) - Change

Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the
pressure.
• DEAC Diesel Engine Antifreeze Coolant
Clean the cooling system and flush the cooling
system before the recommended maintenance
interval if the following conditions exist:
• The engine overheats frequently.
• Foaming is observed.
• The oil has entered the cooling system and the
coolant is contaminated.
• The fuel has entered the cooling system and the
coolant is contaminated.
When any servicing or repair of the engine cooling
system is performed, the procedure must be per-
formed with the engine on level ground. Level ground
will allow you to check accurately the coolant level.
This procedure will also help in avoiding the risk of in-
troducing an air lock into the coolant system.
Note: Inspect the water pump and the water
g06281908
temperature regulator after the cooling system has
been drained. This inspection is a good opportunity
to replace the water pump, the water temperature
regulator, and the hoses, if necessary.
i07313674
Maintenance Section
Coolant (DEAC) - Change
NOTICE
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