Isuzu Trooper II 1986 Manual Download | Manualshive

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Fig. 13: Checking Oil Pump Drive Shaft Alignment on 1.9L Models

Courtesy of Isuzu Motor Co.

ENGINE COOLING

WATER PUMP

Removal

Disconnect negative battery cable. Remove lower cover and

drain cooling system. Remove fan belts. Remove fan and fan pulley.

Remove air pump drive pulley. Remove water pump.

Installation

To install, reverse removal procedure.

NOTE: For further information on cooling systems, see ENGINE

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Summary of Contents for Trooper II 1986

Page 1: ...s on hood Remove hood Remove lower engine cover Drain crankcase oil and cooling system 2 Disconnect PCV hose from air cleaner Disconnect hose from air injection pump Remove air cleaner duct Remove air...

Page 2: ...emove hood strut Scribe hinge positions on hood and remove hood Remove lower engine cover Drain crankcase oil and cooling system Remove lower and upper radiator hoses Disconnect transmission oil coole...

Page 3: ...e Drain cooling system Disconnect top radiator hose Remove A C compressor and bracket if equipped Disconnect EGR pipe from rear of intake manifold Disconnect throttle body cable wiring fuel and vacuum...

Page 4: ...oil pump sprocket 2 Start with outer nuts and work inward to loosen camshaft brackets Remove camshaft brackets and nuts Remove cylinder head to front cover bolts Starting with outer bolts and working...

Page 5: ...Fig 2 Cylinder Head Tightening Sequence 2 3L 2 0 Turbo Courtesy of Isuzu Motor Co Fig 3 Cylinder Head Tightening Sequence 1 9L Courtesy of Isuzu Motor Co CAMSHAFT ENGINE FRONT COVER...

Page 6: ...il Pump for Front Cover Installation on 1 9L Models Courtesy of Isuzu Motor Co 2 Position No 1 and 4 pistons on TDC Install front cover by engaging pinion gear with oil pump drive gear on crankshaft E...

Page 7: ...chain links See Fig 5 3 Length of chain should be 15 381 mm If length exceeds 15 5 32 385 mm replace chain Check chain tensioner tensioner guide pins guide rail and chain guide for wear Replace as ne...

Page 8: ...and move pulley toward water pump Remove timing belt Remove tension pulley and spring Remove crankshaft timing pulley and guide plate 2 Secure camshaft sprocket and remove camshaft sprocket nut Remove...

Page 9: ...y replace pump 2 Install oil pump sprocket Install camshaft guide plate and camshaft sprocket Hold sprocket stationary and tighten mounting bolt Install crankshaft timing sprocket with keyway at 12 o...

Page 10: ...Fig 7 Aligning Timing Belt Sprockets on 2 0L 2 3L Models Courtesy of Isuzu Motor Co CAMSHAFT...

Page 11: ...haft 3 Place camshaft on V blocks and check runout at center journal If runout exceeds 004 10 mm replace camshaft A slight amount of runout can be corrected with a press DO NOT apply heat Installation...

Page 12: ...shaft assembly on cylinder head Align camshaft mark with mark on No 1 rocker arm shaft bracket On turbo models apply silicon gasket material to No 1 rocker arm bracket mounting surface on cylinder hea...

Page 13: ...top of spring and square If spring is more than 0827 2 100 mm out of square replace spring Installation Lubricate valve stem and lower spring seat Install lower spring seat Slide new seal over valve...

Page 14: ...caps Install a piece of hose over rod bolts Using a wooden hammer handle push piston and connecting rod out top of engine block Installation Apply clean engine oil to bearings and piston rings On 1 9L...

Page 15: ...st be within 0018 0026 046 066 mm If clearance exceeds specifications replace pistons 2 Measure weight of piston and rod assemblies Variation in weight between assemblies must not exceed 42 oz 12 gram...

Page 16: ...ize 1st Compression Ring 100 2nd Compression Ring 100 Oil Control Ring Yellow Fig 9 Piston Ring Gap Spacing Courtesy of Isuzu Motor Co NOTE Lower side rail and second compression ring share same gap p...

Page 17: ...n crankshaft while noting runout If runout exceeds 004 10 mm replace or correct crankshaft Standard runout is 001 03 mm or less 4 Lubricate engine bearings Install main bearing caps with arrow pointin...

Page 18: ...ead provides lubrication for camshaft Timing chain and sprockets are lubricated by oil spray from oil jet located on chain guide CRANKCASE CAPACITY Impulse Oil capacity is 5 28 quarts 5 0L on 1 9L mod...

Page 19: ...clearance is greater than 006 15 mm on 2 0L and 2 3L models or 008 20 mm on 1 9L models 3 Inspect relief valve spring for wear weakness or damage Check oil pump body cover and drive gear for wear cra...

Page 20: ...ure that alignment mark is facing to the rear and approximately 20 degrees in a clockwise direction away from crankshaft See Fig 12 3 Ensure that mark on drive gear is facing rear of engine with oil p...

Page 21: ...ING WATER PUMP Removal Disconnect negative battery cable Remove lower cover and drain cooling system Remove fan belts Remove fan and fan pulley Remove air pump drive pulley Remove water pump Installat...

Page 22: ...olts 18 24 Front Pulley Boss Bolt 87 118 Intake Manifold 16 22 Main Bearing Caps 72 98 Oil Pump Sprocket 58 79 Oxygen Sensor 2 0L 2 3L 33 45 1 9L 18 24 Rocker Arm Shaft Brackets 2 16 22 Rear Oil Seal...

Page 23: ...lacement Cu In 138 Liters 2 3 Fuel System 1 x 2 Bbl HP RPM 96 4600 Torque Ft RPM 128 2200 Compr Ratio 8 3 Bore In mm 3 52 83 9 Stroke In mm 3 54 90 Trooper II Displacement Cu In 138 Liters 2 3 Fuel Sy...

Page 24: ...0015 0031 038 079 Valve Lift PISTONS PINS RINGS SPECIFICATIONS PISTONS PINS RINGS SPECIFICATIONS TABLE Application In mm 1 9L Pistons Clearance 0018 0026 045 065 Pins Piston Fit 0002 0004 006 011 Rod...

Page 25: ...5 48 940 Clearance 0007 0029 019 075 Side Play 008 013 02 33 VALVE SPRING SPECIFICATIONS VALVE SPRING SPECIFICATIONS TABLE Application In mm 1 9L 2 0L 2 3L Free Length 1 8951 48 1 Pressure Lbs In Kg m...

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