Chevrolet 70 Series 1970, Service Manual

Page: 740 / 841

SHEET METAL 11-3
1. Drain the cooling sy ste m and disconnect
radiator h o se s.
2. If radiator a sse m b ly includes o il c o o ler,
make p ro v isio n s for catching o il drainage from oil
co o ler p orts and lin e s . D isconnect a ll coolant
h o se s and o il lin e s (if equipped) from radiator
core a sse m b ly .
3. If v eh ic le is equipped with air conditioning
o r pow er ste e r in g cooling c o ils , rem ove c o ils ,
lin e s , and b ra ck ets, a s n e c e ssa r y .
4. On som e m odels it may be n e c e ssa r y to
rem ove fan shroud attaching b olts, then lay shroud
back over fan b lad es.
5. On m odels excep t HM and JM 80, rem ove
upper lock nuts, w a sh ers, and cu shions from rad ­
iator sta b iliz e r ro d s. R efer to RADIATOR AND
SURGE TANK (SEC. 13) (fig. 4) of th is manual.
Do not m ove low er lock nuts or jam nuts on
stru t rod.
NOTE: If n e c e ssa r y to rem ove hood, r e fe r to
"Hood R eplacem ent" la te r in th is sectio n .
R efer to RADIATOR AND SURGE TANK (SEC.
13) of this manual, for rem oval of radiator from
sh e ll.
6
. In stall radiator s h e ll unit in v eh icle in the
r e v e r s e of rem oval p roced u res.
NOTE: If c o llisio n rep a ir s w ere made to front
end of v e h icle , it may be n e c e ssa r y to realign the
s h e ll and hood p a n els, u sin g m eans of threaded
yoke on radiator sh e ll support strut rods (fig.
4
).
By shortening or lengthening rod s, top of radiator
co re and sh e ll can be tilte d fo re and aft to obtain
p rop er hood alignm ent.
RADIATOR SHELL MOUNTING
BRACKET REPLACEMENT
1. Secure adequate support for the radiator
co r e (when involved) and radiator sh e ll sh eet
m etal, a s th ese com ponents w ill drop when sup­
port bracket is rem oved.
2. Rem ove a ll b o lts, nuts and w ash ers s e c u r ­
ing mounting bracket to fram e r a il, to radiator
sh e ll and to radiator co r e support (if involved).
3. R em ove mounting bracket (fig. 5 or
6
). In
so m e c a s e s bracket may be further d isa ssem b led
fo r inspection.
4. Replace worn mounting pads o r cushions
and a sse m b le bracket if n e c e ssa r y .
5. In stall mounting b racket com ponents in
r e v e r se of above p roced u res.
FENDER ASSEMBLY REPLACEMENT
NOTE: The follow ing d e sc r ib e s procedure
for replacing the com plete fender assem b ly which
in clu d es com ponents shown in figure 7.
SUPPORT
BRACKET
FENDER
FENDER AND SKIRT ASSEMBLY
H
FENDER SUPPORT
SUPPORT BRACKET ^MOUNTING STUDS
BOLT HOLES
L 2
\ ^ S P A C E R S
FENDER DISCONNECT*POINTS
Figure 7—Fender Replacement (TypicalI
REMOVAL
1. Rem ove two b o lts, nuts, and w a sh ers which
attach bum per to fender front support bracket.
2. At rear of fender, rem ove two b o lts, bolt
sp a c e r s, nuts, and w a sh ers which attach fender to
running board.
3. Rem ove nuts from four studs which attach
fender support to fram e sid e ra il. Lift fender a s ­
sem bly from v eh icle.
NOTE: If d e sir e d , the sk irt and fender sup­
port can be readily separated from fender.
INSTALLATION
A ssem b le fender and sk irt if n e c e ssa r y , then
in sta ll fender a ssem b ly in r e v e r se of “ Rem oval
p ro ced u res.
NOTE: If a ll attaching hardware is in sta lled
lo o se ly , com ponents can be readily aligned b efore
fin al tightening.
RUNNING BOARD REPLACEMENT
(R efer to F igure
8
)
REMOVAL
1. Rem ove two b o lts, nuts, and w a sh ers which
attach running board to fender. Rem ove bolt
sp a c e r s.
2. Rem ove four bolts and lock w a sh ers which
attach running board to fram e supports. Remove
running board.
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL