High Strength Steel (HSS)
High strength steel is used for body panels in order to reduce vehicle weight.
Accordingly, precautions in repairing automotive bodies made of high strength
steel are described below:
SP130 is the most commonly used HSS.
Read the following precautions when repairing HSS:
1. Additional points to consider
When heating is unavoidable, do not heat HSS parts above 550C (1,022F).
Verify heating temperature with a thermometer.
(Crayon-type and other similar type thermometer are appropriate.)
Instead, use a saw to avoid weakening surrounding areas due to heat. If gas (torch) cutting is unavoidable, allow a minimum margin of 50 mm (1.97in).
If spot welding is impossible, use M.I.G. welding. Do not use gas (torch) welding because it is inferior in welding strength.
Therefore, when cutting spot welds on a HSS panel, use a low speed high torque drill (1,000 to 1,200 rpm) to increase drill bit durability and facilitate the operation.
2. Precautions in spot welding HSS
This work should be performed under standard working conditions.
Always note the following when spot welding HSS:
Handling of Ultra High Strength Steel Plate Parts
PROHIBITION OF CUT AND CONNECTION
Do not cut and join the lower lock pillar reinforcement (center pillar reinforcement inside frame parts) because its material is high strength steel plate (ultra high strength steel plate).
The center pillar reinforcement must be replaced if this part is damaged.
HANDLING PRECAUTIONS FOR PLASTICS
Precautions For Plastics
1. When repairing and painting a portion of the body adjacent to plastic parts, consider their characteristics (influence of heat and solvent) and remove them if necessary or take suitable measures to protect them.
2. Plastic parts should be repaired and painted using methods suiting the materials, characteristics.
LOCATION OF PLASTIC PARTS
PREPARATION
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Camshaft valve clearance
Inspection and Adjustment
INSPECTION
Perform inspection as follows after removal, replacement or installation of
camshaft or valverelated parts, or if
there are unusual engine conditions regarding valve clearance.
Remove rocker cover.
Measure the valve clearance with the following proced ...
Engine oil
Inspection
ENGINE OIL LEVEL
Park vehicle on a level surface, wait 10 minutes before checking the
engine oil level.
Pull out oil level gauge and wipe it clean.
Insert oil level gauge and make sure the engine oil level is within
the range (A) as shown.
If it is out of range, adjust it. ...