Carrier Transicold X4 7300, Operation & Service Manual

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8–13 62-11637
1. Ensure the unit will not start automatically by dis-
abling any two way communication and placing
the STOP/RUN-OFF switch in the OFF position.
2. Remove all foreign material from the condenser
& radiator by reversing the normal air flow. (Air
is pulled in through the front and discharges
over the engine.) Compressed air or water may
be used as a cleaning agent.
WARNING
!
Do not remove the cap from a hot coolant
system; if the cap must be removed, do
so very slowly in order to release the
pressure without spray.
NOTE
Draining the coolant from the engine petcock
will leave approximately 1 quart (.9 liters) of
coolant in the block.
3. Drain coolant completely by removing radiator
cap and then the lower radiator hose or drain
plug located at the opposite end of the radiator.
NOTICE
NEVER POUR COLD WATER INTO A HOT
ENGINE, however hot water can always
be added to a cold engine.
4. Install hose or drain plug and fill system with
clean, untreated water.
NOTE
Only clean water should be used to flush the
cooling system. Do not use any radiator
flush or detergents to clean the radiator.
5. Start the engine and drain system while warm.
Rinse system three times after it has cooled
down. Refill system with water.
6. Run engine to operating temperature. Drain sys-
tem again and fill with 50/50 water/anti-freeze
mixture. (refer to the Caution Note at the begin-
ning of this section.)
7. Start unit and check for leaks.
b. Radiator Replacement
1. Ensure the unit will not start automatically by dis-
abling any two way communication and placing
the START/RUN
− OFF switch in the OFF position.
2. To facilitate the removal process, remove the
surround with grill attached, refer to Section
8.4.3 , and then remove the condenser fan sup-
port bracket at the top of the frame.
3. Drain coolant into a suitable container by remov-
ing coolant bottle cap and then the engine drain
plug 8,
Figure 8.15 .
4. Remove condenser fan, refer to Section 8.6.3 ,
and then remove the lower fan shroud.
5. Remove the rear condenser frame mounting
bolts and slide the frame back.
6. Remove the radiator inlet, outlet and coolant
bottle hoses at the radiator fittings. Remove top
radiator mounting brackets.
7. Lift curb side of radiator and work coolant bottle
and outlet fitting between frames. Using a catch
pan at the radiator inlet, lift radiator vertical.
Work inlet fitting between frames at the curb
side, in the same manner as the outlet fitting,
and remove radiator through the top of the unit.
8. Re − assemble in reverse order of removal.
Torque frame and radiator mounting bolts 36 to
60 inch/lbs (4.1 to 6.8 Nm) and condenser fan
support bracket bolts 95 to 119 inch/lbs (10.7 to
13.4 Nm).
9. Fill radiator with coolant. (Refer to Section
8.5.14 .)
8.5.15 Water Pump/Alternator Belt
The water pump/alternator belt is driven by a sheave
on the engine crankshaft. Frayed, cracked or worn
belts must be replaced. Adjustment is achieved by
altering the position of the alternator.
WARNING
!
Beware of moving belt and belt driven
components.
WARNING
!
When working with belts, beware of
pinch points.