AUTOCAR ACTT Xspotter 2018, Service Manual

Page: 37 / 60

AWE 00192 Rev. 000 33
877-973-3486
Preventive Maintenance
Note: If coolant is being changed or the
cooling system is being flushed, it is
desirable to leave the coolant flow valves
to the equipment heating systems open, in
order to completely drain the system.
WARNING
Do not remove the pressure cap from
a hot engine. Wait until the coolant
temperature is below 120°F (50°C) before
removing the pressure cap. Heated
coolant spray or steam can cause
personal injury.
Filling the System
1. Remove the pressure cap.
2. Fill the cooling system until coolant is
visible in the sight glass on the coolant
reservoir with a mixture of 50 percent
water and 50 percent ethylene glycol or
propylene glycol antifreeze.
3. Open all coolant flow valves to the heater,
if equipped.
4. Wait two to three minutes, without starting
the engine, to allow the coolant level to
stabilize.
5. Add a 50/50 mixture of water and
antifreeze to bring the coolant level back
to FULL.
6. Turn the HVAC temperature control knob
fully clockwise to select maximum heat
allowing maximum coolant flow through
the heater core. The blower motor must
be turned ON to activate the water control
valve.
WARNING
Do not stand near the surge tank or
radiator while operating the engine with
the radiator pressure cap removed. If the
vehicle is equipped with a fill door on
the side of the surge tank, keep the door
closed due to coolant expansion.
7. Operate the engine at LOW idle for two
minutes with the radiator pressure cap
removed.
8. Turn off the engine and add coolant to
bring the coolant level back to FULL,
using a 50/50 mixture of water and
antifreeze.
9. Operate the engine, with the radiator
pressure cap off, at LOW idle for one
minute to allow adequate oil pressure
throughout the engine. Run the engine at
HIGH idle until the thermostat opens. Run
the engine at idle for two minutes before
shutting it down. This allows adequate
cool down of the pistons, cylinders,
bearings, and turbocharger components.
10. Turn off the engine and check the coolant
level to ensure coolant is visible in the
sight glass on the coolant reservoir. Add
a 50/50 mixture of water and antifreeze,
if necessary, to bring the cooling system
back to the proper level. Install the
pressure cap.