Contents Wiring diagrams Section: Lubrication System All sections

Engine Lubrication System (VQ40DE): Other Suzuki Equator I

Lubrication System 14 illustrations ~934 words

Engine Oil Appearance

  1. Check the engine oil for a white milky appearance or excessive contamination.
  2. If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.

Engine Oil Leakage

Check for engine oil leakage around the following area.

  1. Oil pan
  2. Oil pan drain plug
  3. Oil pressure sensor
  4. Oil filter
  5. Oil cooler
  6. Intake valve timing control cover and intake valve timing control solenoid valve
  7. Front cover
  8. Mating surface between cylinder block and lower cylinder block
  9. Mating surface between cylinder block and cylinder head
  10. Mating surface between cylinder head and rocker cover
  11. Crankshaft oil seals (front and rear)

OIL Pressure Check

WARNINGBe careful not to burn yourself, as the engine and engine oil may be hot. Put the A/T shift selector in the Park (P) position (A/T models) or Neutral position (M/T models), and apply parking brake securely.

Scheme 54

Scheme 54

Scheme 55

Scheme 55
  1. Check engine oil level. Refer to «ENGINE OIL: INSPECTION»(ref-375753-S22192680502010102800000) .
  2. Remove engine under cover. Refer to «FRONT BUMPER: REMOVAL AND INSTALLATION»(ref-375736-S25592846052010102800000) .
  3. Disconnect the oil pressure switch (B) harness connector.
  4. Remove oil pressure switch (B). CAUTION: Do not drop or shock oil pressure switch.
  5. Install Tools. Tool numbers: ST25051001 (J-25695-1) : ST25052000 (J-25695-2)
  6. Start the engine and warm it up to normal operating temperature.
  7. Check the engine oil pressure with engine running under no-load. Refer to «SERVICE DATA AND SPECIFICATIONS»(ref-375703-S25487353652010102800000) . CAUTION: If the difference is extreme, check the oil passages and oil pump for leaks and blockages.
  8. After the inspections, install oil pressure switch as follows: Remove old liquid gasket adhering to oil pressure switch and the engine. Apply liquid gasket and tighten oil pressure switch to the specification. Use Genuine RTV Silicone Sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-375700-S13998640382010102800000) . Oil pressure switch torque: 14.7 N.m (1.5 kg-m, 11 ft-lb) After warming up engine, make sure there is no leakage of engine oil with running engine.

Changing Engine Oil

WARNINGBe careful not to burn yourself, as the engine and engine oil may be hot. Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.

Scheme 56

Scheme 56
  1. Warm up the engine and check for any oil leaks
  2. Stop the engine and wait for at least 10 minutes.
  3. Remove the oil drain plug and oil filler cap to drain the old oil.
  4. Install a new washer on the oil drain plug, then install the oil drain plug in the oil pan. CAUTION: Clean the drain plug and install with a new washer. Oil pan drain plug: Refer to «OIL PAN AND OIL STRAINER: REMOVAL AND INSTALLATION»(ref-375753-S25789388472010102800000) .
  5. Refill the engine with new specified engine oil. Oil grade and viscosity: Refer to «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-375712-S04876022172010102800000) (United States and Canada) or «FOR MEXICO: FLUIDS AND LUBRICANTS»(ref-375712-S04197479092011011200000) (Mexico). Oil capacity: Refer to «SERVICE DATA AND SPECIFICATIONS»(ref-375703-S25487353652010102800000) . CAUTION: The refill capacity depends on the oil temperature and drain time. Use the "Refill oil capacity" values as a reference and check the oil level using the dipstick when filling the engine with oil.
  6. Warm up the engine and check the area around the drain plug and oil filter for any oil leaks.
  7. Stop the engine and wait for more than 10 minutes.
  8. Check the oil level using the dipstick as shown. Add oil as necessary and install the oil filler cap. Refer to «ENGINE OIL: INSPECTION»(ref-375753-S22192680502010102800000) . CAUTION: Do not overfill the engine with oil.

Scheme 57

Scheme 57: Removal
  1. Remove the engine front under cover. Refer to «FRONT BUMPER: REMOVAL AND INSTALLATION»(ref-375736-S25592846052010102800000) .
  2. Drain engine oil. Refer to «CHANGING ENGINE OIL»(ref-375753-S14397525362010102800000) .
  3. Remove the oil filter using Tool as shown. Tool number: KV10115801 (J-38956)
WARNINGBe careful not to burn yourself, as the engine and engine oil may be hot.
CAUTIONOil filter is equipped with a pressure relief valve. Use Genuine Oil Filter or equivalent. When removing, prepare a shop cloth to absorb any engine oil leaks or spills. Do not allow engine oil to adhere to drive belts. Completely wipe off any engine oil that adheres to the engine and the vehicle.

Scheme 58

Scheme 58: Installation

Scheme 59

Scheme 59
  1. Remove foreign materials adhering to the oil filter seal mating surface.
  2. Apply clean engine oil to the oil filter seal circumference of the new oil filter as shown.
  3. Screw on the oil filter manually until it touches the installation surface, then tighten it by 2/3 turn as shown. Or tighten to specification. Oil filter: 17.7 N.m (1.8 kg-m, 13 ft-lb)
  4. Refill engine with new engine oil. Refer to «CHANGING ENGINE OIL»(ref-375753-S14397525362010102800000) .
  5. Inspect the engine for oil leaks. Refer to «ENGINE OIL: INSPECTION»(ref-375753-S22192680502010102800000) .
  6. Install the engine front under cover. Refer to «FRONT BUMPER: REMOVAL AND INSTALLATION»(ref-375736-S25592846052010102800000) .

Oil Cooler

Check oil cooler for cracks. Check oil cooler for clogging by blowing compressed air through engine coolant inlet. If necessary, replace oil cooler assembly.

Relief Valve

Check relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove relief valve by prying it out using a suitable tool. Install a new relief valve in place by tapping it in.

Regulator Valve Clearance

Check regulator valve to oil pump cover clearance using the following formula.

Scheme 60

Scheme 60: Regulator Valve Clearance
  1. (Clearance) = D 1 (Valve hole diameter) - D 2 (Outer Diameter of valve) Regulator valve to oil pump cover: 0.025 - 0.070 mm (0.0010 - 0.0028 in) CAUTION: Coat regulator valve with engine oil. Check that it falls smoothly into the regulator valve hole by its own weight.

OIL Pressure

Unit: kPa (kg/cm 2 , psi)
Engine speedApproximate discharge pressure (1)
Idle speedMore than 98 (1.0, 14)
2,000 RPMMore than 294 (3.0, 43)
(1) Engine oil temperature at 80 °C (176 °F)
(1)Engine oil temperature at 80 °C (176 °F)

OIL PRESSURE SPECIFICATIONS

OIL Pump

Unit: mm (in)
Body to outer rotor0.120 - 0.195 (0.0047 - 0.0077)
Inner rotor to outer rotor tip0.060 - 0.160 (0.0024 - 0.0063)
Body to inner rotor0.030 - 0.070 (0.0012 - 0.0028)
Body to outer rotor0.050 - 0.090 (0.0020 - 0.0035)
Inner rotor to brazed portion of housing0.045 - 0.091 (0.0018 - 0.0036)

OIL PUMP SPECIFICATIONS

Regulator Valve

Unit: mm (in)
Regulator valve to oil pump cover0.025 - 0.070 (0.0010 - 0.0028)

REGULATOR VALVE SPECIFICATIONS

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

SPECIAL SERVICE TOOL Tool number (Kent-Moore No.) Tool name Description ST25051001 (J-25695-1) Oil pressure gauge Measuring oil pressure Maximum measuring range: 2,452 kPa (25 kg/cm 2 , 356 psi) ST25052000 (J-25695-2) Hose Adapting oil pressure gauge to cylinder block KV10111100 (J-37228) Seal cutter Removing steel oil pan and rear timing chain case KV10115801 (J-38956) Oil filter wrench Removing and installing oil filter 64.3 mm (2.531 in) WS39930000 ( - ) Tube presser Pressing the tube of liquid gasket

Scheme 61

Scheme 61: Special Service Tool

Scheme 62

Scheme 62

Scheme 63

Scheme 63

Scheme 64

Scheme 64

Scheme 65

Scheme 65

Commercial Service Tool

COMMERCIAL SERVICE TOOL Tool name Description Power tool Loosening nuts and bolts Deep socket Removing and installing oil pressure switch a: 24 mm (0.94 in)

Scheme 66

Scheme 66: Commercial Service Tool

Scheme 67

Scheme 67