1998 ISUZU TROOPER oil level

4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 7
INSTALLATION
5. Cylinder Head Cover
·Apply engine oil to the rocker arms and the valve
springs.
·Install the cylinder head cover gasket to the
cylinder head cover.
·The gasket must be perfectly smooth with no
loose areas.
·Tighten the cylinder head cover nuts to the
specified torque in the numerical order.
13 (1.3/113 lb·in)N·m(Kg·m/lb·in)
4. Oil Level Gauge Tube
19 (1.9/14)N·m(Kg·m/lb·ft)
Bolt
3. Heater and Oil Cooler Pipe Fixing Bolts
2. Intercooler Assembly (4JG2-T Only)
·(Refer to intercooler installation steps in this
section.)
1. Air Cleaner Cover & Air Duct

6A2 Ð 8 4JG2-NA/4JG2-TURBO ENGINE
INLET MANIFOLD
REMOVAL
1. Intercooler (4JG2-T only)
2. Oil Level Gauge Tube (4JG2-T only)
3. Heater and Oil Cooler Pipe Fixing Bolts.
·Remove fixing bolts from inlet manifold.
4. Injection Pipes
5. Inlet Manifold
INSTALLATION
5. Inlet Manifold
·Tighten the fixing bolts and nuts to the specified
19 (1.9/14)
N·m(Kg·m/lb·ft) Bolt
24(2.4/18)N·m(Kg·m/lb·ft)
Nut

4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 9
4. Injection Pipes
·Tighten the sleeve nut to the specified torque
3. Heater and Oil Cooler Pipe Fixing Bolts
·Tighten fixing bolts to the specified torque
2. Oil Level Gauge Tube (4JG2-T only)
1. Inter Cooler (4JG2-T only)
·Refer to ÒInter cooler installationÓsteps in this
section.19 (1.9/14)N·m(Kg·m/lb·ft)
29 (3.0/22)N·m(Kg·m/lb·ft)

4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 21
VALVE STEM OIL SEAL & VALVE SPRING
REMOVAL
Preparation
·Disconnect battery ground cable.
1. Air cleaner Cover & Air Duct (4JG2-T Only)
·Disconnect air hoses.
·Release clips and bands and remove air cleaner
cover.
2. Intercooler Assembly (4JG2-T Only)
·(Refer to intercooler removal steps in this section)
3. Oil Level Gauge Tube
4. Cylinder Head Cover
5. Rocker Arm Shaft Assembly
·Loosen bolts and nuts of rocker arm shaft
·Bracket by turns and removal rocker
·Shaft asm.
6. Valve Spring
·Apply compressed air to cylinder from the glow
plug hole hold the valve in place.
·Using special tool, compress valve spring and
removal split collar.
Valve spring compressor: 9-8523-1423-0 (J-29760)

4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 23
2. Intercooler Assembly (4JG2-T Only)
·Refer to intercooler installation steps in this
section.
1. Air Cleaner Cover & Air Duct (4JG2-T Only) 3. Oil Level Gauge Guide Tube
·Tighten guide tube to the specified torque.
19 (1.9/14)
N·m(Kg·m/lb·ft)

6A2 Ð 24 4JG2-NA/4JG2-TURBO ENGINE
ROCKER ARM SHAFT ASSEMBLY
REMOVAL
Preparation
·Disconnect battery ground cable.
1. Air Cleaner Cover & Air Duct (4JG2-T Only)
·Disconnect air hoses.
·Release clips and bands and remove air cleaner
cover.
2. Intercooler Assembly (4JG2-T Only)
·Refer to intercooler removal steps in this section.
3. Oil Level Gauge Tube
4. Cylinder Head Cover
5. Rocker Arm Shaft Assembly
·Loosen bolts and nuts of rocker arm shaft bracket
by turns and remove rocker shaft asm.

4JG2-NA/4JG2-TURBO ENGINE 6A2 Ð 25
INSTALLATION
5. Rocker Arm Shaft Assembly
·Install rocker arm shaft with larger oil hole (¿4) to
the front of engine.
·Align fixing bolt with not of rocker arm shaft and
tighten fixing bolts to the specified torque.
54 (5.5/40)N·m (kg·m/lb·ft)
·Adjust valve clearance refreshing to section valve
clearance adjustment.
4. Cylinder Head Cover
·Install cylinder head cover and tighten bolts to the
specified torque.
3. Oil Level Gauge Guide Tube
·Tighten guide tube to the specified torque.
2. Intercooler Assembly (4JG2-T Only)
·Refer to intercooler installation steps in this
section.
1. Air Cleaner Cover & Air Duct (4JG2-T Only)
13 (1.3/113)N·m (kg·m/lb·in)
19 (1.9/14)N·m (kg·m/lb·ft)

4JG2-NA/4JG2-TURBO ENGINE 6A 2Ð 27
REMOVAL
Preparation
·Remove battery. (two batteries for cold area)
·Disconnect window washer hose, and remove
engine hood.
·Drain coolant.
·Space stand and front right tire.
1. Radiator Hose : Upper
·Disconnect upper radiator hose from engine side.
2. Air Cleaner Cover & Air Duct
3. Intercooler Assembly (4JG2-T Only)
·(Refer to intercooler removal steps in this section)
4. Oil Level Gauge Guide Tube
5. P/S Pump
·Loosen P/S pump fixing bolts and adjusting bolt
and remove two drive belts.
·Remove two fixing bolts (front side). A fixing nut
(rear side) and support P/S pump asm with oil
hoses by tying to body side.
6. A/C Compressor Assembly
·Remove A/C compressor fixing bolt (rear under
side of compressor) by using a long extension bar
at under side of wheel arch.
·Disconnect magnetic clutch harness connector.
·Remove fixing bolts (upper and front lower side of
compressor) and set A/C compressor asm with
pipe line on battery carrier.
7. Water Hose; CSD
·Disconnect CSD water hoses from heater hose
side.
8. Engine Harness
·Disconnect five harness connectors from units on
thermostat housing.
9. Heater Hose: Rear Side
·Disconnect heater hose from heater pipe.
10. Water Bypass Hose
·Disconnect water bypass hose from water pump.
11. Water Inlet Hose: Turbo (4JG2-T Only)
·Disconnect from water outlet pipe of engine.
12 Water Outlet Hose: Turbo (4JG2-T Only)
·Disconnect from water inlet pipe of engine.
13 Oil Feed Pipe: Turbo (4JG2-T Only)
·Remove two joint bolts (from turbocharger and
cylinder block) and oil feed pipe.
14. Oil Return Pipe Fixing Nut (4JG2-T Only)
·Remove oil return pipe fixing nut from cylinder
block.
15. Oil Cooler Hose