1997-2011 Nissan Navara Service & Repair Manual

ENGINE MECHANICAL SECTION EM MODIFICATION NOTICE: Gasoline engine: I KA24DE engine information has been added. Diesel engine: I The main bearing clearance has been changed. I The exhaust valve identification mark has been changed. I The piston ring identification mark has been changed. I The tightening torque has been changed on bolts and nuts for the engine slinger, crankshaft pulley and flywheel. I A washer has been added between the glow plate and the glow plug. CONTENTS KA24DE PRECAUTIONS AND PREPARATION............................2 Parts Requiring Angular Tightening .............................2 Liquid Gasket Application Procedure ..........................2 Special Service Tools ..................................................3 Commercial Service Tools ...........................................6 OUTER COMPONENT PARTS .......................................7 COMPRESSION PRESSURE........................................10 Measurement of Compression Pressure ...................10 OIL PAN ......................................................................... 11 Removal ..................................................................... 11 Installation ..................................................................12 TIMING CHAIN ..............................................................13 Removal .....................................................................15 Inspection...................................................................17 Installation ..................................................................18 OIL SEAL REPLACEMENT ..........................................21 CYLINDER HEAD..........................................................24 Removal .....................................................................25 Installation ..................................................................25 Disassembly...............................................................26 Inspection...................................................................26 Assembly ...................................................................32 Valve Clearance.........................................................32 ENGINE REMOVAL .......................................................35 Removal .....................................................................36 Installation ..................................................................37 CYLINDER BLOCK .......................................................38 Disassembly...............................................................39 Inspection...................................................................39 Assembly ...................................................................45 QD & TD OUTER COMPONENT PARTS .....................................49 CYLINDER HEAD..........................................................50 Assembly ...................................................................51 ENGINE OVERHAUL ....................................................52 Assembly ...................................................................54 KA24DE SERVICE DATA AND SPECIFICATIONS (SDS) ..........55 General Specifications ...............................................55 Inspection and Adjustment ........................................55 QD & TD SERVICE DATA AND SPECIFICATIONS (SDS) ..........63 Inspection and Adjustment ........................................63 GI MA LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX EM-1

Parts Requiring Angular Tightening I Use an angle wrench for the final tightening of the following engine parts: (1) Cylinder head bolts (2) Connecting rod cap nuts I Do not use a torque value for final tightening. I The torque values for these parts are for a preliminary step. I Ensure thread and seat surfaces are clean and coated with engine oil. Liquid Gasket Application Procedure a. Use a scraper to remove all traces of old liquid gasket from mating surfaces and grooves. Also, completely clean any oil from these areas. b. Apply a continuous bead of liquid gasket to mating surfaces. (Use Genuine Liquid Gasket or equivalent.) I For oil pan, be sure liquid gasket diameter is 3.5 to 4.5 mm (0.138 to 0.177 in). I For areas except oil pan, be sure liquid gasket diameter is 2.0 to 3.0 mm (0.079 to 0.118 in). c. Apply liquid gasket around the inner side of bolt holes (unless otherwise specified). d. Assembly should be done within 5 minutes after coating. e. Wait at least 30 minutes before refilling engine oil and engine coolant. SEM164F AEM080 PRECAUTIONS AND PREPARATION KA24DE EM-2

Special Service Tools *: Special tool or commercial equivalent Tool number Tool name Description ST0501S000* Engine stand assembly q 1 ST05011000 Engine stand q 2 ST05012000 Base NT042 Disassembling and assembling KV10105001* Engine attachment NT031 KV101092S0* Valve spring compressor q 1 KV10109210 Compressor q 2 KV10109220 Adapter NT021 Disassembling and assembling valve compo- nents) KV10110300 Piston pin press stand assembly q 1 KV10110310 Cap q 2 KV10110330 Spacer q 3 ST13030020 Press stand q 4 ST13030030 Spring q 5 KV10110340 Drift q 6 KV10110320 Center shaft NT036 Disassembling and assembling piston with connecting rod PRECAUTIONS AND PREPARATION KA24DE EM-3 GI MA LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX

Tool number Tool name Description EM03470000* Piston ring compressor NT044 Installing piston assembly into cylinder bore ST16610001* Pilot bushing puller NT045 Removing crankshaft pilot bushing KV10111100 Seal cutter NT046 Removing oil pan WS39930000* Tube presser NT052 Pressing the tube of liquid gasket KV10112100 Angle wrench NT014 Tightening bolts for bearing cap, cylinder head, etc. KV10116300 Valve oil seal drift NT602 Installing valve oil seal a: 25 (0.98) dia. b: 14.4 (0.567) dia. c: 11.8 (0.465) dia. d: 10 (0.39) dia. e: 11 (0.43) f : 9 (0.35) Unit: mm (in) PRECAUTIONS AND PREPARATION KA24DE Special Service Tools (Cont’d) EM-4

Tool number Tool name Description ST10120000 Cylinder head bolt wrench NT583 Loosening and tightening cylinder head bolt a: 13 (0.51) dia. b: 12 (0.47) c: 10 (0.39) Unit: mm (in) KV101151S0 Lifter stopper set q 1 KV10115110 Camshaft pliers q 2 KV10115120 Lifter stopper NT041 Changing valve lifter shims KV10105800* Chain stopper NT010 Removing and installing idler sprocket PRECAUTIONS AND PREPARATION KA24DE Special Service Tools (Cont’d) EM-5 GI MA LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX

Commercial Service Tools Tool name Description Spark plug wrench NT047 Removing and installing spark plug Pulley holder NT035 Holding camshaft pulley while tightening or loosening camshaft bolt Valve seat cutter set NT048 Finishing valve seat dimensions Piston ring expander NT030 Removing and installing piston ring Valve guide drift NT015 Removing and installing valve guide Valve guide reamer NT016 Reaming valve guide (q 1 ) or hole for over- size valve guide (q 2 ) Diameter: mm (in) Intake & Exhaust a 10.5 (0.413) b 6.6 (0.260) Diameter: mm (in) Intake & Exhaust d 1 7 (0.28) d 2 11.175 (0.4400) PRECAUTIONS AND PREPARATION KA24DE EM-6

SEM012G OUTER COMPONENT PARTS KA24DE EM-7 GI MA LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX

q 1 Spark plug q 2 Ignition wire q 3 Camshaft position sensor built into distributor q 4 Heated oxygen sensor q 5 Exhaust manifold q 6 Exhaust manifold cover q 7 Water drain plug SEM013G OUTER COMPONENT PARTS KA24DE EM-8

SEM976F OUTER COMPONENT PARTS KA24DE EM-9 GI MA LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX

Measurement of Compression Pressure 1. Warm up engine. 2. Turn ignition switch OFF. 3. Release fuel pressure. Refer to EC section (“Fuel Pressure Release”, “BASIC SER- VICE PROCEDURE”). 4. Remove all spark plugs. I Clean area around the plug with compressed air before removing the spark plug. 5. Disconnect camshaft position sensor harness connector at the distributor. 6. Disconnect all fuel injector harness connectors. 7. Attach a compression tester to No. 1 cylinder. 8. Depress accelerator pedal fully to keep throttle valve wide open. 9. Crank engine and record highest gauge indication. 10. Repeat the measurement on each cylinder as shown above. I Always use a fully-charged battery to obtain specified engine speed. Compression pressure: kPa (bar, kg/cm 2 , psi)/rpm Standard 1,226 (12.26, 12.5, 178)/300 Minimum 1,030 (10.30, 10.5, 149)/300 Difference limit between cylinders 98 (0.98, 1.0, 14)/300 11. If compression in one or more cylinders is low: a. Pour a small amount of engine oil into cylinders through spark plug holes. b. Retest compression. I If adding oil improves cylinder compression, piston rings may be worn or damaged. If so, replace piston rings after checking piston. I If pressure stays low, a valve may be sticking or seating improperly. Inspect and repair valve and valve seat. (Refer to SDS, EM-55 and EM-57.) If valve or valve seat is damaged excessively, replace it. I If compression stays low in two cylinders that are next to each other: a. The cylinder head gasket may be leaking, or b. Both cylinders may have valve component damage. Inspect and repair as necessary. 12. Reconnect fuel pump fuse, all fuel injector harness connectors, and the camshaft position sensor harness connector at the distributor, and then reinstall spark plugs. SEF215P SEM486D COMPRESSION PRESSURE KA24DE EM-10

1997-2011 Nissan Navara Service & Repair Manual

You're Reading a Preview

Recently Viewed