Chevrolet DB90 Series, Руководство по обслуживанию

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S ec. 13-232
RADIATOR AND SURGE TANK
Figure 5 —Radiator C ap s and Filler Necks
perpendicular manner with the lift hooks in stalled
in upper mounting b rack ets, and it may be n e c e s ­
sa r y to guide radiator past bottom of fan by p r e s s ­
ing low er part of radiator forward.
11. C arefully r a ise and rem ove radiator. R e­
m ove upper cushion.
INSTALLATION
1. Using a chainfall and slin g (attached to
radiator upper mounting brackets) carefully lift
radiator a ssem b ly into position in v eh icle.
NOTE: Install upper cushion on radiator sup­
port (fig. 3).
2. In stall w ash ers and cushions on two bolts
(fig. 3) and in sta ll through radiator support and
upper cushion into radiator low er tank, then torque
b olts to 130 to 140 foot-pounds. R eplace lock w ire.
3. In stall bolt, w ash er, and nut on each radi­
ator sta b iliz e r rod. Tighten nut on each rod 50 to
60 foot-pounds torque.
Figure 6 —Radiafor Shutter Air Cylinder
4. A sse m b le a ll h o se s to radiator fittin gs,
then tighten clam ps cirm ly . In stall coolant low
le v e l indicator w ire term in al, to probe on upper
tank, if so equipped.
5. If equipped, connect air line to shutterstat
then open shut-off cock in supply lin e at a ir tank.
6. C arefully in sta ll a ir conditioning andpower
ste e r in g cooling c o ils , pow er ste erin g r e se r v o ir ,
and receiv er-d eh y d ra to r (if rem oved).
7. Connect or in sta ll a ll other item s that w ere
rem oved or disconnected during radiator rem oval.
8. B e su re h o se s, lin e s, b rack ets, or fan
shroud w ill not in terfere with operation of fan.
9. Add coolant to radiator, sta rt engine and
allow it to warm up. Inspect sy ste m for lea k s. R e­
check radiator coolant le v e l and add coolant if
n e c e ssa r y .
NOTE: Inform ation applicable to radiator r e ­
p a ir rem ains the sam e a s covered under "Radiator
R epair" in RADIATOR AND SURGE TANK (SEC.
13) in S erv ice Manual ST 135-70, excep t refer to
figure 4 for typical P erfex radiator a ssem b ly.
RADIATOR CAPS AND FILLER NECKS
Changes w ere made in the radiator cap and
m ating radiator fille r neck to make it m ore d iffi­
cult to rem ove a radiator cap without fir s t stopping
in the safety position . T h ese changes co n sist of
flattening out the trailin g edge of the cap locking
tangs and rem oving the in sid e ramp on the safety
detent on the fille r neck (refer to fig . 5). The cap
and fille r neck m eet at right an gles in the safety
p osition and the cap cannot be turned beyond this
point without p r e ssin g down on the cap.
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT