Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 216

6A–51

ENGINE MECHANICAL (6VE1 3.5L)

Reassembly

1. Install Spark plug and tighten all the spark plugs to

specified torque.

Torque: 18 N·m (13 lb ft)

2. Tighten sub gear setting bolt.

1. Use J–42686 gear spring lever to turn sub gear to

right direction until the M5 bolt aligns with the hole
between camshaft driven gear and sub gear.

2. Tighten the M5 bolt to a suitable torque to prevent

the sub gear from moving.

014RW025

3. Install camshaft drive gear assembly and tighten

three bolts to the specified torque.

Torque: 10 N·m (87 lb in)

4. Install camshaft assembly and camshaft bearing cap,

tighten twenty bolts on one side bank to the specified
torque.
1. Apply engine oil to camshaft journal and bearing

surface of camshaft bearing cap.

2. Align timing mark on intake camshaft (one dot for

right bank, two dots for left bank) and exhaust
camshaft (one dot for right bank, two dots for left
bank) to timing mark on camshaft drive gear (one
dot).

014RW020

Legend

(1) Intake Camshaft Timing Gear for Right Bank
(2) Intake Camshaft Timing Gear for Left Bank
(3) Exhaust Camshaft Timing Gear
(4) Discrimination Mark

LI: Left Bank Intake

RI: Right Bank Intake

LE: Left Bank Exhaust

RE: Right Bank Exhaust

014RW023

Legend

(1) Right Bank Camshaft Drive Gear
(2) Left Bank Camshaft Drive Gear
(3) Timing Mark on Drive Gear
(4) Dowel Pin

6A–52

ENGINE MECHANICAL (6VE1 3.5L)

014RW024

Legend

(1) Right Bank
(2) Left Bank

(3) Alignment Mark on Camshaft Drive Gear
(4) Alignment Mark on Camshaft
(5) Alignment Mark on Retainer

3. Tighten twenty bolts in numerical order on each

bank as shown in the illustration.

Torque: 10 N·m (87 lb in)

014RW031

5. Tighten bolt for camshaft drive gear assembly pulley

to the specified torque.

Torque: 98 N·m (72 lb ft)

6A–53

ENGINE MECHANICAL (6VE1 3.5L)

Valve Spring, Oil Controller, Valve, Valve Guide

Valve Spring, Oil Controller, Valve, Valve Guide and Associated Parts

014RW039

Legend

(1) Camshaft Bearing Cap Fixing Bolts
(2) Camshaft Assembly Inlet
(3) Camshaft Assembly Exhaust
(4) Shim
(5) Tappet
(6) Split Collar

(7) Spring Upper Seat
(8) Valve Spring
(9) Oil Controller

(10) Spring Lower Seat

(11) Valve Guide

(12) Valve

Disassembly

1. Remove camshaft bearing cap fixing bolts (1).
2. Remove camshaft assembly (intake).

3. Remove camshaft assembly (Exhaust side).
4. Remove shim (4) and tappet (5).

6A–54

ENGINE MECHANICAL (6VE1 3.5L)

5. Use the J–8062 valve spring compressor and

J–42898 valve spring compressor adapter to remove
split collar.

014RW042

6. Remove valve spring.
7. Remove valve.
8. Remove oil controller and spring lower seat.
9. Remove the valve guide using the J–42899 valve

guide replacer.

Inspection and Repair

Valve Spring

CAUTION: Visually inspect the valve springs and
replace them if damage or abnormal wear is evident.

1. Measure the free height of the springs. The springs

must be replaced if the free height is below the
specified limit.

Standard : 44.6 mm (1.756 in)
Limit : 43.6 mm (1.717 in)

014RS004

2. Measure the valve spring squareness with a steel

square and replace the valve springs if the measured
value exceeds the specified limit.

Limit : 2 mm (0.079 in)

014RS005

3. Using a spring tester to compress the springs to the

installed height, measure the compressed spring
tension, and replace the springs if the measured
tension is below the specified limit.

At installed height: 35.0 mm (1.38 in)
Standard: 196 N (44 lb)
Limit: Less than 181 N (41 lb)

014RS006

Valve Guide

CAUTION: Take care not to damage the valve seat
contact surface, when removing carbon adhering to
the valve head. Carefully inspect the valve stem for
scratches or abnormal wear. If these conditions are
present, the valve and the valve guide must be
replaced as a set.