Exterior Maintenance; Dust And Water Leaks (All Cabs) - Chevrolet 70 Series 1970 Service Manual

CAB AND BODY MOUNTINGS 1-2
GENERAL
R egular periodic inspections and m aintenance
proced ures are recom m ended to ensure that all
cab mounting b olts are kept properly tightened.
Keep door hinge bolts tight - both those at­
taching hinge to body, a s w ell a s bolts which at­
tach hinge to door.
P erio d ica lly check a ll cab b o lts for tig h tn e ss.
P roper protection and maintenance of finish
w ill add to its lu ster. Road elem ents are injurious
to painted su rfa ces of v e h ic le s. T hese can be r e ­
moved by regular w ashings. A s an additional p ro ­
tection, p o lish v eh icle, using a good grade of wax,
30 days after d elivery. Apply a coat of p olish th ere­
after at le a st once a yea r.
An application of DC4X silic o n e or equivalent
to door w eatherstrip and adjacent contact a rea s on
cab w ill prevent squeaks and freezin g of w eather­
strip to cab.
R efer to SHEET METAL AND FIBERGLASS
(SEC. 11) for fib erg la ss rep air inform ation.

EXTERIOR MAINTENANCE

Aluminum is attacked by many acids and m ost
a lk a lie s. Consequently, considerable ca re should
be taken in the selectio n of chem ical clea n ers. U se
of even inhibited-type alkaline clean ers is in ad vis­
able due to difficulty in rem oving a ll tr a c e s of
clea n er. T herefore, it is recom m ended that painted
and plated external fin ish e s be cleaned only with
soap and w ater.
Body painted su rfa ces and chrom e plating
should be protected by a coating of wax applied at
regular in terv a ls. P erio d s between applications
should be su fficiently sh ort to a ssu r e continuous
protection of the finish; 30 days after delivery and
at le a st once a year thereafter. Any good body wax
can be used for both painted and chrom e su rfa ces.
Wax should be applied im m ediately after veh icle
has been cleaned and be rubbed down with a lam b's
wool polishing wheel or by hand.
The entire v eh icle should be regularly in­
spected for corrosion and paint damage. P articu lar
attention should be given to chrom e and exposed
aluminum su rfa ces during the winter months. Since
aluminum is suscep tib le to attack by alkaline sub­
sta n c e s, road d e-icin g m aterials such as s a lts and
chlorid es a ccelera te corrosion of ejqposed alum ­
inum p a rts. If inspection r e v e a ls corrosion or
paint dam age, co rrectiv e m easu res should be im ­
m ediately em ployed as d escrib ed la ter in this
section .
INTERIOR CLEANING
Care of upholstery and in terior panels is a
rela tiv e sim p le but im portant m atter. Accum ula­
tion of dirt eventually turns into a hard, gritty,
substance which eventually p en etrates fabric and
sp o ils appearance.
VINYL COATED CLOTH
To clean se a ts, door p an els, dash padding,
sle e p e r com partm ent p anels, and engine tunnel
co v er, u se lukewarm w ater with a m ild liquid
household soap. Work up thin suds on a p ie c e of
ch eeseclo th , rub upholstery briskly but ligh tly. R e­
m ove suds with a clean damp cloth and fin ish by
wiping lightly with a dry soft cloth. Do not u se
furniture p o lish e s, o ils , varn ish es, or am m onia.
A s required, stubborn stain s may be rem oved with
com m on foam ing-type upholstery clean er prepared
for u se on vinyl cloth.
FLOOR CARPETING
F loor should be cleared of debris by sweeping
or vacuuming. Soiled a reas may be cleaned with
ordinary carpet clean er and a soft b r istle brush.
U se cleaner sparingly and allow area to dry thor­
oughly.
WINDOW GLASS
Clean window g la ss and m ir ro r s with a good
household window clean er. Follow m anufacturer's
d irection s in proper u se of clean er.
Avoid u se of p etroleum base clea n er s sin ce
they w ill attack rubber and paint fin ish e s. N ever
w ax windows, vinyl coated cloth, or painted non-
r e fle c tiv e su rfaces such a s
DUST AND WATER LEAKS
T est w indshield, windows, and cab underfloor­
ing for leak s by spraying w ater under p re ssu r e
against cab, w hile a ssista n t inside cab m arks
points of leakage, if any ex ist.
NOTE: To determ ine the exact location of leak
at flooring or cow l, rem ove floor mat and dash
panel pad. Water which show s tip at a certain place
insid e cab may actually be entering at a point other
than w here w ater is found. B ack -track path of
w ater to point of entry.
A fter location of leak has been determ ined
around g la s s, dry surface and apply rubber cem ent.
Apply cem ent to ou tside, both betw een g la ss and
w eatherstrip and between w eatherstrip and body.
Apply body sea lin g compound over all the
other leakage points.
If leakage occu rs at door opening, check w ea­
th erstrip . R eplace if n e c e ssa r y . If door does not
firm ly contact w eath erstrip , align door a s d e s­
cribed in applicable cab section .
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL
dash o r con sole.