Engine Cooling - Chevrolet 1979 Light Duty Truck Owner's Manual

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All brake fluid parts must be able to stand 3,000 psi (20 685 kPa).
The brake fluid tap must be made to the master cylinder port
supplying fluid to rear brakes. Copper tubing is subject to fatigue
failure and must not be used.
•
Before going down a steep or long grade, reduce speed and
shift transmis sion into a lower gear to control your vehicle's
speed. Try not to hold the brake pedal down too long or too
often. This could cause the brakes to get hot and not work as
well.
H itches - To help avoid personal injury due to sway caused by such
things as crosswinds, big trucks passing or road roughness, or due to
separation of the trailer:
•
A properly
weight-distributing hitch and (2) sway control with enough
capacity are required for trailers over 4,000 pounds (6
kilograms) Pick-up and Suburban, 2,000 pounds (3 200 kilograms)
Blazer loaded weight.
•
Keep the trailer tongue load at 10% of the loaded trailer weight
for dead-weight hitches, and 12% for weight-distributing hitches.
Tongue loads can be adjusted by proper distribution of the load
in the trailer. This can be checked by weighing separately the
loaded trailer and then the tongue.
•
Do not use axle mounted hitches. They can damage the axle
housing, wheel bearings, wheels or tites.
•
When you remove a trailer hitch, be sure to seal any mounting
holes in the body. This will help prevent entry of exhaust fumes,
dirt or water. (See "Engine Exhaust Gas Caution (Carbon
Monoxide)" at the beginning of Section 2.)
TRAI LER TOWI N G T I PS
Getti ng Started
Before entering traffic with a trailer equipped with electric brakes, start
the vehicle and trailer moving and apply the trailer brakes by hand to
be sure the trailer brakes are working and the trailer electrical system
is connected.

Engine Cooling

In case your engine overheats, see "Engine Coolant" in the "In Case
of Emergency" section in this manual.
Long Uphill Grades
When going up long grades, you can reduce the chance of engine
overheating by down-shifting the transmission to a lower gear and
reducing speed to 45 mph (70 km/h) or below.
Tra nsmission
See the method for checking transmission fluid level in the "Service
and Maintenance" section in this manual.
Parki ng
You should not park vehicles with trailers on a grade (hill). However,
if you must park on a grade, these steps must be followed:
installed and
1-20
adjusted (1) frame mounted
400