4-20. RADIATOR AND COOLING SYSTEM - Continued
Install radiator overflow hose on fan shroud.
Test fan/shroud installation as detailed in step 1 preceding.
Replace the engine compartment canopy.
Radiator Shutter Cylinder Repair.
Radiator does not have to be removed from truck, but it must be dismounted and moved back
towards the engine about 4 in. (10 cm). Shutter cylinder cannot be repaired. It must be replaced if
faulty. Ensure air tanks are drained.
Move radiator back toward engine about 4 in. (10 cm) as detailed in para. 4-20.1 REMOVAL
preceding. Rotate right hand side back further than left hand side until shutter cylinder is accessible.
When accessible, disconnect air line (5) to
radiator shutter cylinder.
Remove retaining screw (6).
Remove circlip (1) from end of shutter arm (3)
and ease cylinder push rod off shutter arm.
Remove both bushings
(2) from shutter arm.
Remove fitting from old cylinder and install on
new using pipe sealant (item 22, Appendix E) on
Install new cylinder (4) on shutter arm. Be sure
bushings are correctly installed.
Retain cylinder on shutter arm (3) using circlip (1).
Install cylinder body into side of shutter and attach
using screw (6).
Connect air line to radiator shutter cylinder using
pipe sealant (item 22, Appendix E) on threads.
Install radiator as detailed in INSTALLATION
Start engine and fill air tanks to full pressure. Set
shutter switch in cab to AUTO, in AUTO, shutter
should be CLOSED. Set shutter switch to
MANUAL, shutter should be OPEN.