Jeep Grand Cherokee WK. Manual — part 1208
ENGINE - 5.7L SERVICE INFORMATION
TABLE OF CONTENTS
page
page
ENGINE - 5.7L SERVICE INFORMATION
. . . . . . . . . . . . . . . . . . . . . . . 1430
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - INTRODUCTION . . . . . . . . . . 1430
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - PERFORMANCE . . . . . . . . . 1431
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - MECHANICAL . . . . . . . . . . . 1432
DIAGNOSIS AND TESTING - CYLINDER
COMPRESSION PRESSURE . . . . . . . . . . . 1433
DIAGNOSIS AND TESTING - CYLINDER
COMBUSTION PRESSURE LEAKAGE . . . . 1433
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - LUBRICATION . . . . . . . . . . . 1434
DIAGNOSIS AND TESTING - ENGINE
DIAGNOSIS - MECHANICAL . . . . . . . . . . . 1435
DAMAGED OR WORN THREADS . . . . . . . 1437
STANDARD PROCEDURE - HYDROSTATIC
LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1437
. . . . . . . . . . . . . . . . . . . 1438
. . . . . . . . . . . . . . . 1445
. . . . . . . . . . . . . . . . . . . . . . . 1453
. . . . . . . . . . . . . . . . . . . . . . . . . . 1458
. . . . . . . . . . . . . . . . . . . . . . . 1460
AIR INTAKE SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1463
. . . . . . . . . . . . . . . . . . . . . . . 1464
CYLINDER HEAD
DIAGNOSIS AND TESTING - CYLINDER HEAD
. . . . . . . . . . . . . . . . . . . 1464
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1465
. . . . . . . . . . . . . . . . . . . . . . . . . . 1467
. . . . . . . . . . . . . . . . . . . . . . . . . 1467
. . . . . . . . . . . . . . . . . . . . . . . 1468
COVER-CYLINDER HEAD
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1472
. . . . . . . . . . . . . . . . . . . . . . . 1475
VALVES & SEATS - INTAKE/EXHAUST
. . . . . . . . . . . . . . . . . . . . . . 1477
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1478
. . . . . . . . . . . . . . . . . . . . . . . 1478
ROCKER ARM
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1479
. . . . . . . . . . . . . . . . . . . . . . . 1481
SEALS-VALVE GUIDE
. . . . . . . . . . . . . . . . . . . . . . . 1483
SPRINGS-VALVE
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1483
. . . . . . . . . . . . . . . . . . . . . . . 1489
ENGINE BLOCK
. . . . . . . . . . . . . . . . . . . . . . . . . . 1493
. . . . . . . . . . . . . . . . . . . . . . . . . 1494
CAMSHAFT
HOLE PLUG . . . . . . . . . . . . . . . . . . . . . . . . 1494
. . . . . . . . . . . . . . 1495
. . . . . . . . . . . . . . . . . . . . . . . . . 1499
INSTALLATION - CAMSHAFT CORE HOLE
PLUG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500
CRANKSHAFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1505
. . . . . . . . . . . . . . . . . . . . . . . 1509
BEARINGS-CRANKSHAFT MAIN
STANDARD PROCEDURE - CRANKSHAFT
. . . . . . . . . . . . . 1515
. . . . . . . . . . . . . . . . . . . . . . . . . 1515
SEAL-CRANKSHAFT OIL-FRONT
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1516
. . . . . . . . . . . . . . . . . . . . . . . 1517
SEAL-CRANKSHAFT OIL-REAR
DIAGNOSIS AND TESTING - REAR SEAL
. . . . . . . . . . . . . . . . . . . . . . . 1517
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1518
. . . . . . . . . . . . . . . . . . . . . . . 1519
RETAINER-CRANK REAR OIL - SEAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1519
. . . . . . . . . . . . . . . . . . . . . . . 1520
FLEX PLATE
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1520
. . . . . . . . . . . . . . . . . . . . . . . 1521
TAPPETS-HYDRAULIC ROLLER
DIAGNOSIS AND TESTING - HYDRAULIC
. . . . . . . . . . . . . . . . . . . . . . . . . . 1521
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1522
. . . . . . . . . . . . . . . . . . . . . . . 1523
PISTON & CONNECTING ROD
. . . . . . . . . . . . . . . . . . . . . . . 1524
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1524
9 - 1428
ENGINE - 5.7L SERVICE INFORMATION
WK
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1525
. . . . . . . . . . . . . . . . . . . . . . . . . . 1526
. . . . . . . . . . . . . . . . . . . . . . . . . 1526
. . . . . . . . . . . . . . . . . . . . . . . 1527
RINGS-PISTON
STANDARD PROCEDURE - PISTON RING
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1528
DAMPER-CRANKSHAFT
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1531
. . . . . . . . . . . . . . . . . . . . . . . 1532
COVER-STRUCTURAL
. . . . . . . . . . . . . . . . . . . . . . . 1533
. . . . . . . . . . . . . . . . . . . . . . . . . 1533
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1533
. . . . . . . . . . . . . . . . . . . . . . . 1534
SOLENOID-MDS
. . . . . . . . . . . . . . . . . . . . . . . 1534
. . . . . . . . . . . . . . . . . . . . . . . . . 1534
. . . . . . . . . . . . . . 1535
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1535
. . . . . . . . . . . . . . . . . . . . . . . 1535
MOUNT - FRONT
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1536
. . . . . . . . . . . . . . . . . . . . . . . 1536
MOUNT - REAR
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1537
. . . . . . . . . . . . . . . . . . . . . . . 1538
LUBRICATION
. . . . . . . . . . . . . . . . . . . . . . . 1539
DIAGNOSIS AND TESTING - CHECKING
ENGINE OIL PRESSURE . . . . . . . . . . . . . . 1539
DIAGNOSIS AND TESTING - ENGINE OIL
LEAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1540
OIL
STANDARD PROCEDURE - ENGINE OIL
. . . . . . . . . . . . . . . . . . . . . . . . . . 1541
FILTER-ENGINE OIL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1541
. . . . . . . . . . . . . . . . . . . . . . . 1542
PAN-ENGINE OIL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1542
. . . . . . . . . . . . . . . . . . . . . . . 1545
PUMP-ENGINE OIL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1550
. . . . . . . . . . . . . . . . . . . . . . . . . . 1550
. . . . . . . . . . . . . . . . . . . . . . . . . 1551
. . . . . . . . . . . . . . . . . . . . . . . 1552
MANIFOLD - INTAKE
. . . . . . . . . . . . . . . . . . . . . . . 1553
DIAGNOSIS AND TESTING - INTAKE
. . . . . . . . . . . . . . . . 1553
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1553
. . . . . . . . . . . . . . . . . . . . . . . . . . 1554
. . . . . . . . . . . . . . . . . . . . . . . . . 1554
. . . . . . . . . . . . . . . . . . . . . . . 1554
MANIFOLD - EXHAUST
. . . . . . . . . . . . . . . . . . . . . . . 1554
. . . . . . . . . . . . . . . . . . . . . . . . . 1555
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1555
. . . . . . . . . . . . . . . . . . . . . . . . . . 1556
. . . . . . . . . . . . . . . . . . . . . . . . . 1556
. . . . . . . . . . . . . . . . . . . . . . . 1556
COVER-TIMING
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1558
. . . . . . . . . . . . . . . . . . . . . . . 1560
TIMING CHAIN & SPROCKETS
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1561
. . . . . . . . . . . . . . . . . . . . . . . 1564
TENSIONER - TIMING CHAIN
. . . . . . . . . . . . . . . . . . . . . . . 1567
. . . . . . . . . . . . . . . . . . . . . . . . . 1567
WK
ENGINE - 5.7L SERVICE INFORMATION
9 - 1429
ENGINE - 5.7L SERVICE INFORMATION
DESCRIPTION
The 5.7L engine (345 CID) eight-cylinder engine is a 90° V-Type lightweight, deep skirt cast iron block, aluminum
heads, single cam, overhead valve engine with hydraulic roller tappets. The heads incorporate splayed valves with
a hemispherical style combustion chamber and dual spark plugs. The cylinders are numbered from front to rear; 1,
3, 5, 7 on the left bank and 2, 4, 6, 8 on the right bank. The firing order is 1-8-4-3-6-5-7-2.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - INTRODUCTION
Engine diagnosis is helpful in determining the causes of malfunctions not detected and remedied by routine main-
tenance.
9 - 1430
ENGINE - 5.7L SERVICE INFORMATION
WK
These malfunctions may be classified as either performance (e.g., engine idles rough and stalls) or mechanical
(e.g., a strange noise).
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) - PERFORMANCE and (Refer to 9 - ENGINE - DIAGNOSIS
AND TESTING)—MECHANICAL for possible causes and corrections of malfunctions. (Refer to 14 - FUEL SYSTEM/
FUEL DELIVERY - DIAGNOSIS AND TESTING) and (Refer to 14 - FUEL SYSTEM/FUEL INJECTION - DIAGNO-
SIS AND TESTING) for the fuel system diagnosis.
Additional tests and diagnostic procedures may be necessary for specific engine malfunctions that can not be iso-
lated with the Service Diagnosis charts. Information concerning additional tests and diagnosis is provided within the
following diagnosis:
•
Cylinder Compression Pressure Test (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
•
Cylinder Combustion Pressure Leakage Test (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
•
Engine Cylinder Head Gasket Failure Diagnosis (Refer to 9 - ENGINE/CYLINDER HEAD - DIAGNOSIS AND
TESTING).
•
Intake Manifold Leakage Diagnosis (Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANIFOLD - DIAGNOSIS
AND TESTING).
DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - PERFORMANCE
CONDITION
POSSIBLE CAUSE
CORRECTION
ENGINE WILL NOT START
1. Weak battery
1. Charge or replace as necessary.
2. Corroded or loose battery
connections.
2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to the terminals.
3. Faulty starter.
3. (Refer to 8 - ELECTRICAL/
STARTING - DIAGNOSIS AND
TESTING).
4. Incorrect spark plug gap.
4. (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/SPARK PLUG
- CLEANING).
5. Dirt or water in fuel system.
5. Clean system and replace fuel
filter.
6. Faulty fuel pump, relay or wiring.
6. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
ENGINE STALLS OR ROUGH IDLE
1. Idle speed set to low.
1. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
2. Vacuum leak.
2. Inspect intake manifold and
vacuum hoses, repair or replace as
necessary.
3. Incorrect engine timing.
3. (Refer to 9 - ENGINE/VALVE
TIMING - STANDARD
PROCEDURE).
WK
ENGINE - 5.7L SERVICE INFORMATION
9 - 1431
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст