Jacking Instructions; T Ir E Inflation Tables For Highway Service - Chevrolet 10 Series 1970 Service Manual

WHEELS AND TIRES 10-2

Jacking Instructions

Th e chart w ill a ssist in p e rfo rm in g wheel and tir e
changes using v eh icle jacks
mended fo r use on C h evrolet T ru ck s.
Jacking Point on V eh icle
M odel
Front
CP10, CP20-
L o w e r C ontrol A rm
30
P iv o t
K10-20
Under Front A x le
N ea r Spring Seat
40-60
Chevy Van o r Behind Bum per —
Sportvan Under L e ft Side
Fram e R ail
T IR E IN F L A T IO N T A B L E S FOR
H IGH W AY SERVICE
T ir e p re s su res should be adjusted to the load being
c a rrie d by the tir e as shown in the follow in g charts.
(F o r s e v e re s e rv ic e and heavy duty operation, it is p e r ­
m issib le to in crease maximum p ressu res of passen ger
type tir e s shown 6 p si with no in crea se in load ca rryin g
capacity.)
The follow ing notes apply to the adjacent tables.
1. T ir e inflation p ressu re may in crease as much as 6
pounds p er square inch (psi) when hot.
2. F or continuous high speed operation with p assen ger
ca r type tir e s (o v e r 75 mph) in crease tir e inflation
p ressu re 4 pounds p e r square inch o v e r the re c o m ­
mended p ress u res up to a maximum o f 32 pounds p er
square inch cold fo r
pounds p e r square inch cold fo r load range D tir e s .
Sustained speeds above 75 mph a re not recom m ended
when the 4 pounds p er square inch adjustment would
requ ire p ressu re g re a te r than the maximum stated
above.
3. Cold tire inflation p ressu re:
in operative fo r 3 hours o r m ore, o r driven le s s than
1 m ile . Hot tire inflation pressu re:
has been driven 10 m ile s o r m ore at 60-70 m ile s p er
hour.
4. Suburban loads should be distributed as fa r fo rw a rd
as possible.
5. V eh ic le s with luggage
load lim it g re a te r than sp ecified .
6. When towing tr a ile r s , the allow able p assenger and
cargo load must be reduced by an amount equal to the
tr a ile r tongue load on the t r a ile r hitch.
PASSENGER CAR TYPE TIRES
The optional tir e s lis te d in the adjacent tables a re not
n ecessary fo r norm al requ irem en ts. H ow ever, an extra
m argin o f tir e s e rv ic e is ava ilab le when these options
a re used at loads up to and including full rated load. They
a re available on m odels as indicated in the table.
supplied with o r re c o m ­
R ea r
A x le Housing
A x le Housing
Behind B u m p e r-
Under Right
Side F ram e R ail
load range B tir e s , o r 40
a fte r veh icle has been
a fte r veh icle
racks do not have a veh icle
On some m odels space lim itations do not p erm it the
use o f a la r g e r siz e tire; hence, the load range D tire is
a va ila b le. In either case, these tir e s a re applicable to
t r a ile r towing or when an extra m argin o f tir e s e rv ic e is
d esired . Use o f a la rg e r tir e
should not be construed as perm ittin g an in crease in the
fu ll rated veh icle load o v e r that sp ecified in the tire
inflation p ressu re table.
Only those tir e s o f the size shown on the adjacent table
a re recom m ended fo r use on your veh icle.
other siz e o f tir e may seriou sly a ffect rid e, handling,
g r o u n d clearan ce, tire
calibration . T o achieve best a ll around veh icle handling
p erfo rm a n ce, fib e rg la s s belted tir e s ,
and bias ply tire s should not be m ixed on the same truck.
NOTE : On fou r-w heel d riv e veh icles a ll tire s
must be o f equal size and ply rating and o f same
tread configuration.
PASSENGER CAR T Y P E TIR ES
Max. G ross
V eh icle
M odel
Wgt. (Inc.
P a ssen gers)
A L L E X C E P T 05, 06, 16 MODELS (P A N E L S
S T E P VANS, SUBURBANS, B L A Z E R S )
(SEE BELO W )
CS/ C E 107-109
5000
KS/KE 107-109 5200
5600
P A N E L S & S T E P VANS
CS/CE 10 4400
5400
PS/PE 10 4600
5300
B L A Z E R MODELS
(F r t. Seat Only)
2 Passen ger
*+450# C argo
(F r t Seat Only)
2 P a ssen g er
* + 850# C argo
SUBURBANS
CS/CE 1 to 3 Pass. (1 Seat)
+ 300 lbs. C argo
1 to 5 Pass. (2 Seat)
+ 600 lbs. C argo
1 to 9 Pass. (3 Seat)
*C a rg o load reduced by 225# when the veh icle is
equipped with hard top.
or a load range D tire
Use o f any
clea ra n ces, and speedom eter
radial ply tire s ,
T ir e Inflation
Size P re s s u re
& Load PSI (C ool)
Range Front R ea r
G78-15B 30 32
H78-15B 30
28
6 .5 0 -16C 30 34
G78-15B 30 32
30 34
6.50-16C
H78-15B 30 32
G78-15B 30 32
6.50-16C 30 34
H78-15B 30 32
G78-15B 30 32
6.50-16C 30 34
H78-15B 30 32
E78-15B 30 32
G78-15B 30 32
H78-15B 30 32
30 32
6.50-16C
G78-15B 30 32
6 .5 0 -16C 30 36
H78-15B 30
32
CHEVROLET TRUCK SERVICE MANUAL