
ALPHA SERIES ENGINES WORKSHOP MANUAL
49
Figure 2.47.3 Removing the Thermostat
C
1
- Early type
C
2
- Current type
1. Remove the radiator top hose.
2. Unscrew and remove the engine temperature
switch, if
fitted,
from the thermostat body drain
plug (A).
3. Remove the two cover retaining bolts.
4. Lift off the cover (B).
5. Lift out the thermostat (C).
6. Clean any debris and the old seal from the
thermostat housing.
2.47.3 Replacing the Thermostat
1. With all surfaces clean and dry, coat both
gasket faces with Hylomar PL32/M and
fit
a new
gasket.
2. Replace the thermostat into the housing taking
care to ensure the jiggle pin (A) moves freely
and is located as shown towards the recess. If a
jiggle pin is not
fitted
the round hole must be in
this position.
3. Replace the cover in the correct plane, see
'Figure 2.47.1'.
4. Replace the engine temperature switch, if fitted.
5. Replace the radiator top hose.
6.
Refill
and bleed the system with clean fresh
water and coolant concentrate to a 40%
concentration.
See 2.45.2 Engine Block Coolant Capacity.
Figure 2.47.4 Replacing the Thermostat
2.47.4 Testing the Thermostat
1.With the thermostat removed from the engine
submerge it in a suitable container of warm
water.
2.Raise the water temperature and check when the
thermostat begins to open and when it is fully open.
3.Compare the results with the
figures
given in
the table and if they are outside those given the
thermostat must be replaced.
ºC
ºF
74º Thermostat
Starts to Open
Fully Open
72-76º
162-169º
85-88º
185-190º
88º Thermostat
Start to Open
Fully Open
86-90º
187-194º
99-102º
210-216º
2.48 THE RADIATOR
Care must be taken to ensure the air
flow
is
unobstructed and has not been re-circulated from
the driven equipment.
The radiator
fins
should be checked for damage
every 2000 hours, or more frequently if the
application demands or dusty conditions.
There are a number of radiator options available,
including some which are remote mounted away
from the engine and some may not have been
originally fitted by Lister Pette
r Power Systems.
Details for the radiator can be found in the relevant
Master Parts Manual.
2.48.1 The Radiator Cap
15.0lb/in
2
cap is used on all radiators originally
fitted
Cap Part Numbers
15.0lb/in
2 ...................
027-07878
2.48.2 Radiator Coolant Capacity
There are a number of radiator options available,
including some which may not have been originally
fitted by Lister Petter
Power Systems.
For these reasons it is advisable to ascertain
the radiator capacity which must then be added
to that given in "2.45.2 Engine Block Coolant
Capacity" before determining the amount of
coolant concentrate to be added to maintain a 40%
concentration.
An additional amount must also be taken into
consideration for the capacity of the hoses on
remote radiator applications.
by Lister Petter Power Systems. If there is any doubt
as to
which is fitted Lister Petter
Power Systems
should be consulted.
Содержание 0600123LPW3A01
Страница 1: ...LPW LPWS TURBO ENGINES WORKSHOP MANUAL ALPHA SERIES P027 08240 ...
Страница 87: ...87 ...