TM 5-3825-229-14&P
4-46A. THERMOSTAT AND COOLING LINES (cont)
b.
Testing Thermostat (cont).
(2)
Heat water and stir gradually. Check water
temperature with a reliable thermostat.
(3)
Observe thermostat as water temperature rises.
Thermostat
should
begin
to
open
when
temperature is within 3C (5F) of the nominal
temperature (82C, 180°F). Thermostat should be
fully open at 12C (22F) above the nominal
temperature.
(4)
Thermostat is not adjustable and must be
replaced if it does not operate within the above
limits.
Testing Thermostat
c.
Installation of Thermostat.
(1)
Clean all old gasket material from cover (2) and mounting surface on water pump (3).
(2)
Install thermostat (7) in water pump (3) so that bypass plate is positioned above bypass opening.
(3)
Install new cover gasket (6) on water pump. Install cover (2), with attached hose (5), on water pump.
(4)
Secure cover with two screws (1) and washers (4). Tighten screws to a torque of 17 lb-ft (23 Nm) (wet).
(5)
Fill cooling system. Refer to para. 4-46. g.
d.
Cooling Lines.
(1)
Removal.
(a)
Loosen clamps (1) and (4). Remove hose (2)
from top of radiator (3) and from top of water
pump (5).
(b)
Loosen clamps (6) and (8). Remove hose (7)
from bottom of radiator (3) and from bottom of
water pump (5).
(2)
Installation.
(a)
Install hose (7) to bottom of water pump (5) and
secure with clamp (8).
(b)
Install hose (7) to bottom of radiator
(3) and secure with clamp (6).
Removing and installing Cooling Lines
4-95
