Radiator - New Holland LS140 Workshop Manual

RADIATOR

Op. 10 406 02
Radiator Cap
A pressure-type radiator cap rated at 0.5 bar (7 PSI)
is employed to obtain higher cooling efficiency. When
the coolant pressure builds up to the range of 0.5 bar
(7 PSI), excessive pressure is relieved from the
overflow pipe (shown by white arrow).
When coolant temperature falls, coolant pressure
may become less than atmospheric pressure. As this
may fracture the radiator, the vacuum relief valve
opens at –0.04 - –0.05 kg/cm
protect the radiator (black arrow).
Inspection
1. Check the radiator for coolant leaks. If there are
coolant leaks, repair or replace the radiator.
2. Check radiator fins for clogging by mud and/or
other foreign matter. If clogged, clean the fins.
3. Check the pressure cap and vacuum pressure
relief cap for operating pressure or sealing
condition. Replace if defective.
4. Check the radiator hoses; replace if damaged,
swollen or soft.
Op. 10 406 10
Radiator Removal
Drain the radiator and cooling system by raising up
on handles, 1, moving the radiator to the rear.
Remove the drain plug, 2, and drain the coolant into
a clean container.
Remove the upper and lower radiator hoses.
Remove the radiator support hardware and handles,
2, from both sides of the radiator. Remove the
overflow hose from the radiator at the cap.
SECTION 10 - ENGINE
2
(–1.3 - –1.6" Hg) to
10-85
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