Chapter 2 Basic Engine
4. Cylinder Head
,4LHA Serie.
4-3.2 Inspection of valve seat wear and contact surface
Inspect for valve seat scratches and excessive wear.
Check to make sure the contact surface is normal. The
seat angle must be checked and adjusted if the valve seat
contact surface is smaller than the width of the valve seat.
Note: Bear in mind that the intake and exhaust valves
have different diameters.
4-3.3 Valve sinking
Over long periods of use and repeated lappings, combus-
tion efficiency may drop. Measure the sinking distance
and replace the valve and valve seat if the valve sink ex-
ceeds the tolerance.
Sink
mm (in.)
Cylinder head
TT
7
Depth gauge
mm
Standard .
Wear limit
Valve sink
.4LHA-HTE/HTP
(Intake/Exhaust)
• 4LHA-STE/STP
DTE/DTP
(Exhaust)
0.2 - 0.4
1.8
Valve protrusion
4LHA-STE/STP
DTE/DTP
(Intake)
0.6 - 0.8
(Protrusion)
0.6 (sink)
4-3.4 Valve guide
(1) Measuring inner diameter of the valve guide.
Measure the inner diameter of the valve guide and
replace it if it exceeds the wear limit.
Standard
Wear limit
Valve guide
inside dia.
Intake
9 . 0 0 - 9 . 0 1 5
(0.3543 - 0.3549)
9.1
(0.3583)
Valve guide
inside dia.
Exhaust
9 . 0 0 - 9 . 0 1 5
(0.3543 - 0.3549)
9.1
(0.3583)
NOTE: The inner diameter standard dimensions assume a
pressure fit.
(2) Replacing the valve guide
Use the insertion tool and tap in the guide with a
mallet.
The intake valve guide and exhaust valve guide are of
different shapes/dimensions. The one with a groove
around it is the exhaust valve guide and the one
without is the intake valve guide.
(3) Valve guide projection
The valve guide should protrusion 11.5 mm from the top of
the cylinder head .
7777
T
77
2-17
Summary of Contents for 4LHA-HTP
Page 79: ...Y00R4782 2 Fig fc GEAR HOUSING REFER TO F i g l REFER TO F i g 2 8 2 9 7 EFER TO Fi g 5...
Page 81: ...Y00R4782 FLYWHEEL HOUSING 4LHA STZE P 4LHA DTZE P 4LHA HTZE P 13 1 4...
Page 87: ...Y00R4782 LUB OIL S U M P 9 7 7 7 7 o 1 01 21 2 N 4LHA HTE P 4LHA HTZE P OPTIONAL 12...
Page 89: ...Y0OR4782 OIL SEAL HOUSING REFER TO Fig 1...
Page 101: ...Y00R4782 Fig j 2 R V Tfc JI K S U C T I O N M A N I F O L D...
Page 107: ...Y00R4782 Fig CAMSHAFT DRIVING GEAR...
Page 109: ...Y00R4782 Fig 1 C e 4LHA ST Z E P I O TURBOCHARGER 4LHA ST Z E P REFER TO F i g 1 3...
Page 111: ...Y00R4782 r 1 ft t y 4LHA DT Z E P F i g l O TURBOCHARGER 4LHA DT Z E P REFER TO F i g 1 3...
Page 113: ...Y00R4782 1 7 fcf 4LHA HT Z E P Fig I I T U R B O C H A R G E R 4LHA HT Z E P...
Page 115: ...Y00R4782 Fig 18 ftiB M I X I N G E L B O W E X H A U S T B E N D 5...
Page 117: ...Y00R4782 Fig 18 1 5 E W K M I X I N G E L B O W E X H A U S T B E N D 5...
Page 121: ...Y00R4782 Fig I W AIR COOLER 4 L H A H T E P 4 L H A H T Z E P REFER TO F i g 24...
Page 127: ...Y00R4782 F i g t C LUB OIL COOLER REFER TO F i g 1 9 FLYWHEEL SIDE...
Page 131: ...Y00R4782 Fig 24 LUB OIL SYSTEM REFER TO Fi g 2 4LHA STZE P 4LHA DTZE P REFER TO Fi g 6...
Page 135: ...Y00R4782 Fig C O LUB OIL PIPE TURBOCHARGER REFER TO F i g 1 5 1 6 1 7...
Page 137: ...Y00R4782 Fig 27 MMM V LUB OIL PIPE COOLER REFER TO F i g 22 a 7 f O U T L O STRAINER OUT...
Page 139: ...Y00R4782 Q Q m y7 m 4LHA ST DT Z E P Fi g O C S W P U M P 4LHA ST DT Z E P...
Page 141: ...Y00R4782 OQ ymxy 4LHA HT Z E P Fi g fc 57 C S W P U M P 4LHA HT Z E P...
Page 143: ...Y00R4782 Fig COOLING FRESH W A T E R P U M P REFER TO F i g 62...
Page 145: ...Y00R4782 Fig 31 mo z 4LHA ST DT Z E P C F W COOLER 4LHA ST DT Z E P 5 f fc f ui FLYWHEEL SIDE...
Page 149: ...Y00R4782 Q Q mMW 4LHA STE DTE P Fi g O O C S W PIPE 4LHA STE DTE P REFER TO F i g 3 1...
Page 155: ...Y00R4782 g g nm uy m 4LHA HT Z E P C S W PIPE 4LHA HT Z E P REFER TO F i g 32 11 12 SIED PART...
Page 157: ...Y00R4782 Fig o e nmiuy 4LHA ST DT Z E P O D C F W PI PE 4LHA ST DT Z E P...
Page 159: ...Y00R4782 Fig Q 7 JMP W7 I 4LHA HT Z E P O f C F W PIPE 4LHA HT Z E P REFER TO F i g 2 3...
Page 161: ...Y00R4782 Fi g Q O C S W STRAINER OPTIONAL c s w PUMP KINGSTON C O C K...
Page 167: ...Y00R4782 4 1 mmxyy 4LHA ST DT Z E P I FUEL INJECTION P U M P 4LHA ST DT Z E P...
Page 169: ...Y00R4782 mmxyy 4LHA ST DT Z E P Fifl I F U E L I N J E C T I O N P U M P 4 L H A S T D T Z E P...
Page 173: ...Y00R4782...
Page 175: ...Y00R4782...
Page 177: ...Y00R4782 43 M t GOVERNOR...
Page 179: ...Y00R4782 A JWD f Ktfxr Fig F U E L F E E D P U M P REFER TO Fig 41...
Page 187: ...Y00R4782 Fig A O r W7 4LHA ST DT Z E P H O FUEL PIPE 4LHA ST DT Z E P...
Page 189: ...Y00R4782 Fig A Q miUy 4LHA ST DT Z E P f O FUEL PI PE 4LHA ST DT Z E P...
Page 193: ...Y00R4782 Fig C n B7 f 4LHA ST DT Z E P U U FUEL STRAINER 4LHA ST DT Z E P...
Page 195: ...Y00R4782 Fig K 1 TO7 i 4LHA HT Z E P w I FUEL STRAINER 4LHA HT Z E P REFER TO F i g 12...
Page 197: ...Y00R4782 Fig 52 OIL WATER SEPARATER OPTIONAL 19 mv t 9 14 F R O M FUEL TANK...
Page 203: ...Y00R4782 F i g O O P O W E R STEERING P U M P C F W P U M P...
Page 205: ...Y00R4782 Fig UU P O W E R S T E E R I N G C O O L E R T A N K 1 6...
Page 207: ...Y00R4782 57 ATFA f Fig O I ATF PIPE REFER TO F i g 5 6 FER TO F i g 5 5...
Page 211: ...Y00R4782 Fifl W O STARTING MOTOR REFER TO F i g 3...
Page 213: ...Y00R4782 GENERATOR REFER TO Fig 2...
Page 215: ...Y00R4782 Fig D I GENERATOR OPTIONAL REFER TO F i g 30 REFER TO F i g 60...
Page 221: ...Y00R4782 Fl g O O SENSOR MOUNT...
Page 223: ...Y00R4782 H E A T E R P L U G O P T I O N A L 4 L H A H T E P 4 L H A H T Z E P...
Page 225: ...Y00R4782 Fig OO I N S T R U M E N T P A N E L B T Y P E O P T I O N A L...
Page 227: ...Y00R4782 Fig NSTRUMENT PANEL C TYPE OPTIONAL...
Page 229: ...Y00R4782 66 Fig OO I N S T R U M E N T P A N E L C T Y P E O P T I O N A L...
Page 231: ...Y00R4782 Fig 67 4 0 INSTRUMENT PANEL D TYPE OPTIONAL...
Page 233: ...Y00R4782 Fig 67 N S T R U M E N T P A N E L D T Y P E O P T I O N A L...
Page 235: ...Y00R4782 Fig 6 8 T O O L...
Page 237: ...Y00R4782 Fig D GASKET SET OPTIONAL 1 A...
Page 302: ...Example of setup with HSW630A1 Hurth marine gear WATER INLET IS M l o 3 0 WATER INLET 2 3...
Page 303: ...Chapter 1 General 5 Dimensions i4LHA Series 4LHA STZE STZP 9 96 XVW 9 06 um 1 18...
Page 305: ...Chapter 1 General 5 Dimensions 4LHA Series 4LHA DTZE DTZP 9 96 XVW g oe nm 1 20...
Page 307: ...Chapter 1 General 5 Dimensions i4LHA Series 4LHA HTZE HTZP g 96 xvw S06NIW 1 22...
Page 317: ...Chapter 1 General 7 Electrical Diagrams m4LHA Series 4LHA STZE 1 30...
Page 318: ...Chapter 1 General 7 Electrical Diagrams 4LHA Series 4LHA DTZE 1 32...
Page 319: ...Chapter 1 General 7 Electrical Diagrams 4LHA Series 4LHA HTE HTZE Eng stop solenoid 1 33...
Page 473: ...Chapter 3 Fuel Injection Equipment 9 Tools 4LHA Serie t 3 2 51...
Page 507: ...Chapter 5 Lubrication System 1 Lubrication System 4LHA Serie 1 1 Construction...
Page 519: ...Chapter 6 Cooling Water System 1 Cooling Water System 4LHA Series Cylinder block...