Chevrolet 10 Series 1970 Service Manual page 335

General D es crip tio n ..............................................................................
C om ponent Replacem ent and Adjustm ent ......................................
Engine Assem bly ..............................................................................
Rem oval .........................................................................................
Installation ....................................................................................
M anifold A s s e m b ly ...........................................................................
Rem oval .........................................................................................
Installation ....................................................................................
R ocker A rm C o v e r ............................................................................
Rem oval .........................................................................................
Installation ....................................................................................
Valve Mechanism ..............................................................................
Rem oval ........................................................................................
Installation and Adjustm ent ........................................................
V alve L ift e r s .......................................................................................
Locating N oisy L ift e r s ...................................................................
R em oval .........................................................................................
Installation ....................................................................................
Valve Stem O il Seal and/or V alve Spring ......................................
R e p la c e m e n t..................................................................................
Cylinder Head Assemblies .......................................... - .................
Rem oval .........................................................................................
Installation ....................................................................................
O il P a n ...............................................................................................
Rem oval .........................................................................................
Installation ................................................................... .................
The In -L in e engines co ve red in this section are the 250
and 292 cu. in. L6 engines used in 10-60 S e ries truck
v e h icles.
This section c o ve rs the rem ova l and installation of en­
gine a ssem blies, the rem oval, installation and adjustment
of som e sub -assem b lies and replacem ent of som e com ­
ponents. F or s e r v ic e to
assem b lies (a fte r rem oval)
su b -assem b lies, r e fe r to Section 6 of the Chassis O v e r­
haul Manual.
COMPONENT REPLACEMENT AND ADJUSTMENT
Engine Assembly
Removal
1. D isconnect b attery cables and drain cooling system .
2. R em ove the a ir cleaner.
3. P e r fo r m the fo llow in g p re lim in a ry operations.
ON CS 10-20-30, KS 10-20 SERIES:
• R em ove the hood as outlined in Section 11.
• R em ove the rad iator and shroud as outlined in
Section 13.
ON CS 40-50-60, MS 50, SS 40-50 SERIES:
• R em ove the fron t end sheet m etal (with hood and
radiator attached) as outlined in Section 11.
ON PS 10-20-30-40 SERIES:
• R em ove the engine box and hood as outlined in
Section 11.
ENGINE MECHANICAL
IN-LINE ENGINES
INDEX
Page
6-13
6-13
6-13
6-13
6-14
6-15
6-15
6-15
6-16
6-16
6-16
6-16
6-16
6-16
6-16
6-16
6-17
6-17
6-17
6-17
6-18
6-18
6-18
6-18
6-18
6-18
GENERAL DESCRIPTION
a ll components and sub-
and r e m o v a l of som e
O il Pump ................................................................................................ 6-19
Rem oval .............................................................................................. 6-19
Installation .................................................................................... ..... 6-19
O il Seal (R e a r M a in )......................................................................... ..... 6-19
R e p la c e m e n t.................................................................................. ..... 6-19
Torsional D a m p e r............................................................................. ..... 6-19
Rem oval .............................................................................................. 6-19
Installation .................................................................................... ..... 6-19
Crankcase F ront C o v e r .......................................................................... 6-20
Rem oval .............................................................................................. 6-20
Installation .................................................................................... ..... 6-20
O il Seal (F ro n t C over) .......................................................................... 6-20
R e p la c e m e n t.................................................................................. ..... 6-20
Camshaft ........................................................................................... .....6-21
Measuring L o b e L ift .......................................................................... 6-21
Rem oval .............................................................................................. 6-22
Installation .................................................................................... .....6-22
Tim ing Gears .................................................................................... ..... 6-22
R e p la c e m e n t.................................................................................. ..... 6-22
F lyw h eel ........................................................................................... .....6-22
Rem oval ..............................................................................................6-22
Installation .................................................................................... .....6-23
Engine M o u n t s .................................................................................. .....6-23
Replacem ent ( F r o n t ) .......................................................................... 6-23
Replacem ent (R e a r) .......................................................................... 6-23
Because of the interchangeability and s im ila rity o f
many engine su b -assem b lies and parts,
which truck ve h ic le they are used in, typ ical illu stration s
and procedu res are used (except w here s p e c ific illu s ­
trations o r procedu res
operation). Although illu stra tion s showing bench opera­
tions a re used, m ost sin gle operations, when not part of a
gen eral overhaul, should be p erfo rm ed (if p ra c tic a l) with
the engine in the veh icle.
• R em ove the battery.
• R em ove the rad iator and shroud as outlined in
Section 13.
ON TS 50 and 60 SERIES:
• R em ove the radiator, radiator support and shroud
as outlined in Section 13.
• Disconnect shift linkage at con trol island.
• Disconnect choke cable at carbu retor.
• Disconnect em ergen cy brake cable at em ergen cy
brake and retaining brackets.
• Rem ove bolts retaining con trol island to support
and swing control island forw ard .
• Disconnect hoses at rad iator surge tank.
• Rem ove bolts retaining surge tank to island sup­
port and rem ove surge tank.
• Disconnect throttle cable at carb u retor and r e ­
taining brackets.
ENGINE 6-13
re g a rd le s s o f
are n ecessa ry to c la r ify the
CHEVROLET TRUCK SERVICE MANUAL
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