Home ReviewsRefund
Home/Nissan/Frontier/Nissan Frontier D40 (2004-2010)/Repair manual/Exhaust/Engine Mechanical (Qr): Adjustments
Contents Wiring diagrams Section: Exhaust All sections

Engine Mechanical (Qr): Adjustments Nissan Frontier D40

Exhaust 13 illustrations ~1014 words

Tension Adjustment

Belt tensioning is not necessary, as it is automatically adjusted by drive belt auto-tensioner.

Scheme 7

Scheme 7: REMOVAL
Scheme 7: REMOVAL
  1. Install Tool on auto tensioner pulley bolt, move in the direction of arrow (loosening direction of tensioner) using Tool. Tool number: - (J-46535) CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off. Do not loosen the auto-tensioner pulley bolt. (Do not turn it counterclockwise.) If turned counterclockwise, the complete auto-tensioner must be replaced as a unit, including pulley. see scheme 7: Loosening Auto Tensioner
  2. Remove drive belt.

ADJUSTMENT

  1. Perform adjustment depending on selected head thickness of valve lifter.

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9
  1. Remove camshaft. Refer to " «REMOVAL»(ref-272340-S09769554592007111800000) ".
  2. Remove valve lifters at the locations that are out of the standard.
  3. Measure the center thickness of the removed valve lifters with a micrometer. see scheme 81: Checking Center Thickness Of Removed Valve Lifters With Micrometer
  4. Use the equation below to calculate valve lifter thickness for replacement. Valve lifter thickness calculation: t = t1 + (C1-C2) t = Valve lifter thickness to be replaced t1 = Removed valve lifter thickness C1 = Measured valve clearance C2 = Standard valve clearance: Intake: 0.28 mm (0.011 in) Exhaust: 0.30 mm (0.012 in) Thickness of new valve lifter can be identified by stamp mark on the reverse side (inside the cylinder). Stamp mark "696" indicates 6.96 mm (0.2740 in) in thickness. see scheme 82: Checking Thickness Of Valve Lifters NOTE: Available thickness of valve lifter: 26 sizes range 6.96 to 7.46 mm (0.2740 to 0.2937 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to " «AVAILABLE VALVE LIFTER»(ref-272340-S13051217042007111800000) ".
  5. Install the selected valve lifter.
  6. Install camshaft. Refer to " «INSTALLATION»(ref-272340-S16239505402007111800000) ".
  7. Manually rotate crankshaft pulley a few rotations.
  8. Make sure that valve clearances for cold engine are within specifications by referring to the specified values. Refer to " «INSPECTION»(ref-272340-S18041704352007111800000) ".
  9. Installation of the remaining components is in reverse order of removal.
  10. Warm up the engine, and check for unusual noise and vibration.

Scheme 10

Fig. 83: Identifying Timing Chain Components With Torque Specifications
Scheme 83: Identifying Timing Chain Components With Torque Specifications

Scheme 11

Scheme 11: REMOVAL
Scheme 11: REMOVAL

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13

Scheme 14

Scheme 14
Scheme 14

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

Scheme 19

Scheme 19
Scheme 19
  1. Release the fuel pressure. Refer to " «FUEL PRESSURE RELEASE»(ref-272338-S16699950582007111800000) ".
  2. Remove the air cleaner and air duct assembly. Refer to " «REMOVAL»(ref-272340-S21683954242007111800000) ".
  3. Remove the spark plugs. Refer to " «REMOVAL»(ref-272340-S24775621292007111800000) ".
  4. Remove the rocker cover. Refer to " «REMOVAL»(ref-272340-S12960487872007111800000) ".
  5. Remove the coolant overflow reservoir tank.
  6. Remove the auxiliary drive belt auto-tensioner. Refer to " «REMOVAL»(ref-272340-S37802172622007111800000) ".
  7. Remove the generator. Refer to " «REMOVAL»(ref-272343-S37932953062007111800000) ".
  8. Remove the strut tower brace. Refer to " «COMPONENTS»(ref-272348-S04709235802007111800000) ".
  9. Dismount and position aside the A/C compressor with the piping attached.
  10. Dismount and position aside the power steering pump and reservoir tank with the piping attached.
  11. Remove the upper and lower oil pan, and oil strainer. Refer to " «REMOVAL»(ref-272340-S25970014802007111800000) ".
  12. Remove IVT control cover bolts in the order as shown.
  13. Remove the IVT control cover by cutting the sealant using Tool. Tool number: KV10111100 (J-37228)
  14. Pull chain guide between camshaft sprockets out through front cover.
  15. Set the No.1 cylinder at TDC on the compression stroke with the following procedure: Rotate the crankshaft pulley clockwise and align the mating marks to the timing indicator on the front cover. see scheme 85: Aligning Crankshaft Pulley Mating Marks To Timing Indicator On Front Cover At the same time, make sure that the mating marks on the camshaft sprockets are lined up as shown. If not lined up, rotate the crankshaft pulley one more turn to line up the mating marks to the positions as shown. see scheme 86: Aligning Mating Marks Of Camshaft Sprockets
  16. Remove crankshaft pulley with the following procedure: Hold the crankshaft pulley with a suitable tool, then loosen the crankshaft pulley bolt, and pull the pulley out about 10 mm (0.39 in). Remove the crankshaft pulley bolt. see scheme 87: Loosening Crankshaft Pulley Mounting Bolt With Suitable Tool Attach a pulley puller in the M6 (0.24 in diameter) thread hole on crankshaft pulley, and remove crankshaft pulley. see scheme 88: Attaching Pulley Puller In Thread Hole On Crankshaft Pulley
  17. Remove the front cover with the following procedure: Loosen the front cover bolts in the order as shown, and remove them. Remove the front cover. CAUTION: Be careful not to damage the mating surface. see scheme 89: Identifying Front Cover Bolt Loosening Sequence
  18. If the front oil seal needs to be replaced, remove it using a suitable tool. see scheme 90: Removing Front Oil Seal
  19. Remove timing chain with the following procedure: Push in chain tensioner plunger. Insert a stopper pin into hole on chain tensioner body to secure chain tensioner plunger and remove chain tensioner. NOTE: Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a stopper pin. see scheme 91: Inserting Stopper Pin Into Hole On Tensioner Body Remove timing chain. CAUTION: Do not rotate crankshaft or camshaft while timing chain is removed. It causes interference between valve and piston.
  20. Remove camshaft sprockets. Refer to " «CAMSHAFT»(ref-272340-S39710068642007111800000) ".
  21. Remove timing chain slack guide, timing chain tension guide and spacer.
  22. Remove balancer unit timing chain tensioner with the following procedure: Lift lever up, and release ratchet claw for return proof. Push tensioner sleeve in, and hold it. Matching the hole on lever with the one on body, insert a stopper pin to secure tensioner sleeve. NOTE: Use approximately 1 mm (0.04 in) dia. hard metal pin as a stopper pin. Remove balancer unit timing chain tensioner. see scheme 92: Identifying Balancer Unit Timing Chain Tensioner
  23. Secure the hexagonal portion of the balancer shaft using a suitable tool. Loosen the balancer unit sprocket bolt.
  24. Remove balancer unit timing chain, balancer unit sprocket and crankshaft sprocket. NOTE: When removing balancer unit timing chain, remove crankshaft sprocket and balancer unit sprocket at the same time.
  25. Loosen mounting bolts in reverse order as shown, and remove balancer unit. CAUTION: Do not disassemble balancer unit. NOTE: Use TORX socket (size E14) for bolts No.1 to 4. (Scheme 8): Loosening Sequence Of Balancer Unit Sprocket Bolt

More articles — Engine Mechanical (Qr)