Suzuki Grand Vitara JB416 / JB420. Manual — part 116
1D-132 Engine Mechanical: For J20 Engine
09944–36011
Steering wheel remover
)
Engine Lubrication System: For M16A Engine with VVT 1E-1
Engine
Engine Lubrication System
For M16A Engine with VVT
General Description
Engine Lubrication Description
S5JB0A1511001
The oil pump is of a trochoid type, and mounted on the crankshaft. Oil is drawn up through the oil pump strainer and
passed through the pump to the oil filter.
The filtered oil flows into two paths in cylinder block.
In one path, oil reaches the crankshaft journal bearings. Oil from the crankshaft journal bearings is supplied to the
connecting rod bearings by means of intersecting passages drilled in the crankshaft, and then injected from the big
end of connecting rod to lubricate piston, rings and cylinder wall.
In the other path oil goes up to the cylinder head and lubricates valves and camshafts, etc., after passing through the
internal oilway of camshafts.
An oil relief valve is provided on the oil pump. This valve starts relieving oil pressure when the pressure exceeds
specified pressure.
1E-2 Engine Lubrication System: For M16A Engine with VVT
I3RH0B150001-01
Engine Lubrication System: For M16A Engine with VVT 1E-3
Diagnostic Information and Procedures
Oil Pressure Check
S5JB0A1514001
NOTE
Prior to checking oil pressure, check the
following.
• Oil level in oil pan
If oil level is low, add oil up to Full level
mark (hole) (1) on oil level gauge referring
to “Engine Oil and Filter Change in Section
0B”.
• Oil quality
If oil is discolored or deteriorated, change
it. For particular oil to be used, refer to
“Engine Oil and Filter Change in Section
0B”.
• Oil leaks
If leak is found, repair it.
1) Disconnect oil pressure switch coupler (1).
2) Remove oil pressure switch (2) from cylinder block.
3) Install special tools (oil pressure gauge) to vacated
threaded hole of oil pressure switch.
Special tool
(A): 09915–77310
(B): 09915–78211
4) Start engine and warm engine up to normal
operating temperature.
NOTE
Be sure to shift transaxle gear shift lever in
“Neutral”, set parking brake and block drive
wheels.
5) After warming up, raise engine speed to 4,000 r/min.
and measure oil pressure.
Oil pressure specification
More than 270 kPa (2.7 kg/cm
2
, 39.8 psi) at 4,000
r/min. (rpm)
6) After checking oil pressure, stop engine and remove
oil pressure gauge and attachment.
7) Before reinstalling oil pressure switch (2), be sure to
wrap its screw threads with sealing tape (1) and
tighten switch to specified torque.
NOTE
If sealing tape edge is bulged out from screw
threads of switch, cut it off.
Tightening torque
Oil pressure switch (a): 13 N·m (1.3 kgf-m, 9.5
lb-ft)
2. Low level mark (hole)
I2RH0B150002-01
1
2
I5JB0A151001-01
(A)
(B)
I5JB0A151002-01
1
2
2, (a)
I5JB0A151004-01
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