LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System >> Timing Chain Removal/Installation >> Notes

Timing Chain Removal/Installation: Notes

WARNING:
  • A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing.
CAUTION:
  • If the camshaft is rotated with the timing chain removed and the piston at the top dead center position, the valve may contact the piston and the engine could be damaged. When rotating the camshaft with the timing chain removed, rotate it after lowering the piston from the top dead center position.
  • When rotating the camshaft using a wrench on the cast hexagon, the wrench may contact the rocker arm and damage the rocker arm. To prevent damage to the rocker arm when holding the camshaft on the cast hexagon, use a wrench on the rear side of the engine as shown in the figure to secure a clearance between the cam.
G09785080Courtesy of MAZDA MOTORS CORP.
NOTE:
  • Width at the cast hexagon of the camshaft is 22-24 mm {0.87-0.94 in}.
G11275877Courtesy of MAZDA MOTORS CORP.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the seal cover. (See SEAL COVER REMOVAL/INSTALLATION .)
  3. Remove the ignition coil/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION .)
  4. Remove the air cleaner, air hose and resonance chamber No. 1 as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  5. Remove the drive belt. (See DRIVE BELT REMOVAL/INSTALLATION .)
  6. Remove the front crossmember under cover. (See FRONT CROSSMEMBER UNDER COVER REMOVAL/INSTALLATION .)
  7. Drain the engine oil. (See ENGINE OIL REPLACEMENT .)
  8. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  9. Remove the oil pan. (See OIL PAN REMOVAL/INSTALLATION .)
  10. Remove in the order indicated in the table.
  11. Install in the reverse order of removal.
  12. Refill with the specified type and amount of the engine oil. (See ENGINE OIL REPLACEMENT .)
  13. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  14. Start the engine and inspect the following:
    • Leakage of engine oil and engine coolant.
    • Runout and contact of pulley and belt.
    • Ignition timing, idle speed and idle mixture. (See ENGINE TUNE-UP .)
Fig 1: Timing Chain Components With Torque Specification
G13488027Courtesy of MAZDA MOTORS CORP.
COMPONENT DESCRIPTION

1 Dipstick
2 Cylinder head cover
(See Cylinder Head Cover Removal Note .)
(See Cylinder Head Cover Installation Note .)
3 Oil shower pipe
(See Oil Shower Pipe Installation Note .)
4 Drive belt auto tensioner
(See DRIVE BELT AUTO TENSIONER REMOVAL/INSTALLATION .)
5 Crankshaft pulley lock bolt
(See FRONT OIL SEAL REPLACEMENT .)
6 Crankshaft pulley
(See FRONT OIL SEAL REPLACEMENT .)
7 Front oil seal
(See FRONT OIL SEAL REPLACEMENT .)
8 Electric variable valve timing motor/driver
(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION .)
9 Water outlet component
(See Water Outlet Component Removal Note .)
(See Water Outlet Component Installation Note .)
10 Engine hanger
11 Engine front cover
(See Engine Front Cover Removal Note .)
(See Engine Front Cover Installation Note .)
12 Chain tensioner
(See Timing Chain Removal Note .)
(See Timing Chain Installation Note .)
13 Tensioner arm
(See Timing Chain Removal Note .)
(See Timing Chain Installation Note .)
14 Chain guide (No. 1)
(See Timing Chain Removal Note .)
(See Timing Chain Installation Note .)
15 Timing chain
(See Timing Chain Removal Note .)
(See Timing Chain Installation Note .)
16 Chain guide (No. 2)
17 Crankshaft sprocket
18 Oil pump chain tensioner
19 Oil pump driven sprocket
(See Oil Pump Driven Sprocket Removal Note .)
(See Oil Pump Driven Sprocket Installation Note .)
20 Oil pump chain
21 Oil pump drive sprocket
22 Key
scientia non olet · About LEMON Manuals