remove seats ISUZU KB P190 2007 Workshop Repair Manual

Engine Mechanical – V6 Page 6A1–172

Valve Margin Measurement Procedure
1 Measure the valve margin using an appropriate scale.
2 Refer to 5 Specifications for minimum valve margin and compare them to your measurements.
3 If the valve margins are beyond specification, replace the valves.
4 If the valve margins are within specification and do not require refacing, test the valve for seat
concentricity, refer to Valve-to-Seat Concentricity
Measurement Procedure in this Section.

Figure 6A1 – 294
Valve-to-Seat Concentricity Measurement Procedure
Checking the valve-to-seat concentricity determines whether the valve and seat are sealing correctly.
Measure the valve face and the valve seat to ensure correct valve sealing.
1 Coat the valve face lightly with blue dye (3).
2 Install the valve in the cylinder head.
3 Turn the valve against the seat with enough pressure to wear off the dye.
4 Remove the valve from the cylinder head.
5 Inspect the valve face.
NOTE
• If the valve face is concentric, providing a
correct seal, with the valve stem, a continuous
mark (1) will be made around the entire face (2).
• The wear mark must be at least 0.5 mm from
the margin of the valve. If the wear mark is too
close to the margin, the seat must be
reconditioned to move the contact area away
from the margin.
• If the face is not concentric with the stem, the
mark will not be continuous around the valve
face. The valve should be refaced or replaced
and the seat must be reconditioned, refer to
Valve and Seat Reconditioning Procedure in
this Section.
Figure 6A1 – 295
Valve and Seat Reconditioning Procedure
If the valve seat width, roundness or concentricity are beyond specifications, grind the seats in order to ensure correct
heat dissipation and prevent the build up of carbon on the seats.
If valve seat reconditioning is required, reface the valve face, unless a new valve is used.

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ISUZU KB P190 2007

Engine Mechanical – V6 Page 6A1–228
Page 6A1–228
Valve-to-Seat Concentricity Measurement Procedure
Checking the valve-to-seat concentricity determines whether the valve and seat are sealing correctly.
Measure the valve face and the valve s eat to ensure correct valve sealing.
1 Coat the valve face lightly with blue dye (3).
2 Install the valve in the cylinder head.
3 Turn the valve against the seat with enough pressure to wear off the dye.
4 Remove the valve from the cylinder head.
5 Inspect the valve face.
NOTE
• If the valve face is concentric, providing a
correct seal, with the valve stem, a continuous
mark (1) will be made around the entire face (2).
• The wear mark must be at least 0.5 mm from
the margin of the valve. If the wear mark is too
close to the margin, the seat must be
reconditioned to move the contact area away
from the margin.
• If the face is not concentric with the stem, the
mark will not be continuous around the valve
face. The valve should be refaced or replaced
and the seat must be reconditioned, refer to
Valve and Seat Reconditioning Procedure in
this Section.

Figure 6A1 – 385
Valve and Seat Reconditioning Procedure
If the valve seat width, roundness or conc entricity are beyond specifications, grind the seats in order to ensure correct
heat dissipation and prevent the bu ild up of carbon on the seats.
If valve seat reconditioning is required, reface the valve face, unless a new valve is used.
1 Grind the valve seats (2) to the correct angle specification, refer to 5 Specifications.
2 Using the correct angle specification, grind and
relieve the valve seats (1) to correctly position the
valve seating surface (2) to the valve.
3 Using the correct angle specification, grind and
undercut the valve seats (3) to narrow the valve seat
widths to the specifications, refer to 5 Specifications.
4 If the original valve is being used, grind the valve to the specifications, refer to 5 Specifications. Measure
the valve margin again after grinding, refer to Valve
Margin Measurement Procedure in this Section.
Replace the valve if the margin is out of specification.
New valves do not require grinding.
5 When grinding the valves and seats, grind off as little material as possible. Cutti ng valve seat results in
lowering the valve spring pressure.
6 Install the valve in the cylinder head.

Figure 6A1 – 386
CAUTION
If using refaced valves, lap the valves into the
seats with a fine grinding compound. The
refacing and reseati ng operations should
leave the refinished surfaces smooth and true
so that minimal lapping is required. Excessive
lapping will groove the valve face and prevent
a good seat when hot.

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Automatic Transmission – 4L60E – On-vehicle Servicing Page 7C4–20
9 Install the seal protector, Tool No. AU583-1 (1) into
one of the two plastic seal installers, Tool No.
AU583-2 (2).
NOTE
Two plastic seal installers are required because
of the restricted space between the end of the
manual shaft and the floor pan.
10 Lubricate the lip of a new seal (3) with clean automatic transmission fluid and install it over the seal protector
sleeve, with the steel casing facing the installer tool.
11 Install the seal protector with the new seal and installer tool over the manual shaft (4) and up to the
transmission case.

If the seal protector sleeve jams on the
manual shaft, the flats on the shaft locating
the selector lever will be burred. Use a fine
file to remove any burrs and then proceed.
12 Fit the second plastic seal installer over the manual shaft until it seats against the first installer.
13 Install the manual shaft linkage attaching nut (5) and tighten it to drive the seal in position into the
transmission case.
14 Remove the seal installer and protector tools from the manual shaft.
Figure 7C4 – 18
15 Reinstall the neutral start and back-up lamp switch, refer to 3.4 Neutral Start and Back-up Lamp Switch.
16 Lower the vehicle to the ground and as required, check and top up the automatic transmission fluid level, refer to 2.1 Transmission Fluid.
3.7 Transmission Support and Mount
Remove
1 Raise the vehicle and support in a safe manner, refer to 0A General Information for the location of support points.
2 Support the transmission with a Jack, do not place the support underneath the extension housing or the oil pan, refer to Figure 7C4 – 19.
3 Remove the clip (1) holding the fuel feed and fuel vapour lines on the transmission support (2).
4 Remove the bolt (3) attaching the heat shield (4) to the transmission support.
5 Remove the two nuts (5) attaching the transmission mount to the support.
6 Remove the four bolts and nuts (6) attaching the transmission support to the under body side rails and remove the support.
7 If required, remove the two bolts (7) attaching the transmission mount (8) to the extension housing and remove the mount.

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9A-28 SUPPLEMENTAL RESTRAINT SYSTEM
20. The passenger inflator requires no special
precaution after deployment. 95% of the
particulate emission is potassium chloride (KLC),
which is commonly sold as an edible salt-
substitute. Even if water is applied, post
deployment products are relatively pH neutral.
Disposing of the inflator by burying it in a landfill
will not produce any hazardous products. As with
any dusty environment, safety goggles, dust mask
and gloves should be worn.
WARNING: SAFETY PRECAUTIONS MUST BE
OBSERVED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE
METAL SURFACES OF THE AIR BAG ASSEMBLY
WILL BE HOT. ALLOW THE AIR BAG ASSEMBLY
TO COOL BEFORE HANDLING ANY METAL
PORTION OF IT. DO NOT PLACE THE DEPLOYED
INFLATOR MODULE NEAR ANY FLAMMABLE
OBJECTS. FAILURE TO FOLLOW PROCEDURES
MAY RESULT IN FIRE OR PERSONAL INJURY.
AFTER AN AIR BAG ASSEMBLY HAS BEEN
DEPLOYED, THE METAL CANISTER AND
SURROUNDING AREAS OF THE AIR BAG
ASSEMBLY WILL BE HOT. DO NOT TOUCH THE
METAL AREAS OF THE AIR BAG ASSEMBLY FOR
ABOUT THIRTY MINUTES AFTER DEPLOYMENT.
IF THE DEPLOYED AIR BAG ASSEMBLY MUST BE
MOVED BEFORE IT IS COOL, WEAR GLOVES AND
HANDLE BY THE AIR BAG ITSELF.
21. Disconnect the pigtail adapter from the air bag assembly as soon after deployment as possible to
avoid damage to the pigtail adapter or SRS
deployment harness from contacting the hot ai
r
bag assembly canister. The pigtail adapter and
SRS deployment harness are designed to be
reused. They should, however, be inspected fo
r
damage after each deployment and replaced if
necessary.
22. Dispose of the deployed air bag assembly through normal refuse channels after it has cooled for at
least 30 minutes.
23. W ash your hands with mild soap and wate
r
afterward.
NOTE: The remaining steps are to be followed in the
unlikely event that the air bag assembly did not deplo
y
after following the above procedures.
24. Ensure that the SRS deployment harness has been disconnected from the power source and that
its two banana plugs have been shorted togethe
r
by fully seating one banana plug into the other.
25. Disconnect the pigtail adapter from the air bag assembly.

WARNING: WHEN STORING A LIVE AIR BAG
ASSEMBLY OR WHEN LEAVING A LIVE AIR BAG
ASSEMBLY UNATTENDED ON A BENCH OR
OTHER SURFACE, ALWAYS FACE THE BAG UP
AND AWAY FROM THE SURFACE. THIS IS
NECESSARY SO THAT A FREE SPACE IS
PROVIDED TO ALLOW THE AIR BAG TO EXPAND
IN THE UNLIKELY EVENT OF
ACCIDENTAL
DEPLOYMENT. FAILURE TO FOLLOW
PROCEDURES MAY RESULT IN PERSONAL
INJURY.
26. Temporarily store the air bag assembly with the bag facing up, away from the surface upon which it
rests.

Deployment Inside Vehicle (Vehicle
Scrapping Procedure)
Deployment inside the vehicle is proper when the
vehicle is to be destroyed or salvaged for component
parts. This includes, but is not limited to, the following
situations:
1. The vehicle has completed its useful life.
2. The vehicle has been damaged beyond repair in a nondeployment type accident.
3. The vehicle has been stripped or damaged beyond repair in a theft.
4. The vehicle will be salvaged for component parts to be used on a vehicle with a different Vehicle
Identification Number (VIN) as opposed to being
rebuilt with the same VIN. Never use SRS
components from another vehicle.
WARNING: FAILURE TO FOLLOW PROPER SRS
AIR BAG ASSEMBLY DISPOSAL PROCEDURES
CAN RESULT IN AIR BAG DEPLOYMENT WHICH
MAY CAUSE PERSONAL INJURY. UNDEPLOYED
AIR BAG ASSEMBLIES MUST NOT BE DISPOSED
OF THROUGH NORMAL REFUSE CHANNELS.
THE UNDEPLOYED AIR BAG ASSEMBLY
CONTAINS SUBSTANCES THAT CAN CAUSE
SEVERE ILLNESS OR PERSONAL INJURY IF THE
SEALED CONTAINER IS DAMAGED DURING
DISPOSAL. DISPOSAL IN ANY MANNER
INCONSISTENT WITH PROPER PROCEDURES
MAY BE A VIOLATION OF FEDERAL, STATE
AND/OR LOCAL LAWS.
1. Turn the ignition switch to “LOCK,” remove the ke
y
and put on the safety glasses.
2. Remove all loose objects from the front seats.
3. Disconnect the driver air bag assembly yello
w
connector located at the base of the steering
column.
4. Cut the driver air bag assembly yellow harness connector from the vehicle leaving at least 15 cm
(six inches) of wire at the connector.

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