Suzuki Grand Vitara JB627. Manual - part 99

1D-77 Engine Mechanical: 

09926–58010

09944–36011

Bearing remover attachment

Steering wheel remover

)

)

Engine Lubrication System:  1E-1

Engine

Engine Lubrication System

General Description

Engine Lubrication Description

S6JB0B1501001

The oil pump is of a trochoid type, and mounted under 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 3 paths in cylinder block.
In one path, oil reaches the crankshaft main bearings. Oil from the crankshaft main 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 other paths oil goes up to the cylinder heads and 
lubricates valves and camshafts, etc., after passing through the internal oil way of camshafts. An oil relief valve is 
provided on the oil pump. This valve starts relieving oil pressure when the pressure exceeds the specified pressure.

I6JB01150001-02

1E-2 Engine Lubrication System: 

Diagnostic Information and Procedures

Oil Pressure Check

S6JB0B1504001

NOTE
Prior to checking oil pressure, check the 
followings.
• Oil level in oil pan

If oil level is low, add oil up to Full level 
hole on oil level gauge.

• 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 suction hose and discharge hose from A/

C compressor referring to “Compressor Assembly 
Removal and Installation in Section 7B”.

2) Remove oil pressure switch (1) from cylinder block.

3) Remove steering lower shaft assembly referring to 

“Steering Lower Shaft Assembly Removal and 
Installation in Section 6B”.

4) Install special tool (oil pressure gauge) to vacated 

threaded hole.
Use oil pressure gauge (special tool (A)) with special 
tool (B) instead of the steel adaptor supplied in 
special tool (A).

Special tool
(A):  09915–77311
(B):  09915–76510

5) Start engine and warm it up to normal operating 

temperature.

6) After warming up, raise engine speed to 3,000 rpm 

and measure oil pressure.

Oil pressure specifications
250 kPa (2.5 kg/cm

2

, 36.25 psi) or more at 3,000 

rpm

7) After checking oil pressure, stop engine and remove 

oil pressure gauge.

8) Before reinstalling oil pressure switch, be sure to 

wrap its screw threads with sealing tape 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)

9) Connect suction hose and discharge hose to A/C 

compressor referring to “Compressor Assembly 
Removal and Installation in Section 7B”.

10) Start engine and check oil pressure switch for oil 

leakage.

1

I6JB01150002-01

(A)

(B)

I6JB01150003-01

(a)

I6JB01150004-01

Engine Lubrication System:  1E-3

Repair Instructions

Oil Pan and Oil Pump Strainer Components

S6JB0B1506001

11

8

2

16

15

19

(a)

14

(c)

4

9

5

7

17

(a)

3

22

(a)

10

(a)

12

(a)

20

(a)

13

(a)

18

(a)

13

(a)

5

(b)

6

1

14

(c)

21

23

(a)

I6JB01150005-04

1. Upper oil pan

: Apply sealant 99000-31260 referring to “Oil Pan and Oil Pump 
Strainer Removal and Installation”.

15. Oil level gauge

2. Oil pan baffle plate 

16. Oil level gauge guide

3. Oil pan baffle plate bolt

17. Oil level gauge guide bolt

 4. Lower oil pan

: Apply sealant 9900-31260 referring to “Oil Pan and Oil Pump 
Strainer Removal and Installation”.

18. Lower oil pan nut

5. O-ring

19. Lower oil pan bolt

6. Drain plug

20. Upper oil pan mounting nut

7. Gasket

21. Dowel pin

8. Oil pump strainer

22. Drive plate cover (A/T) or clutch housing lower plate (M/T)

9. O-ring

23. Drive plate cover (A/T) bolt or clutch housing lower plate (M/T) bolt

10. Oil pump strainer bolt

: 11 N

⋅m (1.1 kgf-m, 8.0 lb-ft)

11. Oil pump strainer bracket

: 35 N

⋅m (3.5 kgf-m, 25.5 lb-ft)

12. Oil pump strainer bracket bolt

: 25 N

⋅m (2.5 kgf-m, 18.0 lb-ft)

13. Upper oil pan mounting bolt (M6)

: Apply engine oil to bolt thread

14. Upper oil pan mounting bolt (M8)

: Do not reuse.