TM 5-2420-224-20-2
COOLING SYSTEM TEST
This task covers:
Testing
INITIAL
SETUP
Tools and Special Equipment:
General Safety Instructions:
Detector, P/N 001 589 83 21 00
Equipment Condition:
W A R N I N G
BURN HAZARD
Reference
Condition Description
A l l o w e n g i n e t o c o o l b e f o re
performing maintenance on the
Page 4-389
Inside Engine Hood
m u f f l e r ,
Removed
e x h a u s t p i p e , o r
exhaust manifold. If necessary,
use insulated pads and gloves.
1.
Turn knob (1) on heater (2) halfway out.
2.
Check coolant level; fill to required limit.
3.
4.
5.
6.
Remove expansion tank cap and install
detector in expansion tank (3).
Connect air hose (4) to detector.
Pressurize cooling system to 14.5 psi (1 bar)
and hold pressure for 5 minutes. If pressure
drops, repair leak and test again.
Remove detector and replace expansion tank
cap.
NOTE
Follow-on Maintenance:
Install inside engine hood (page
4-389).
4-89
TESTING
