Timing Chain: Service and Repair
TIMING CHAIN REMOVAL/INSTALLATION [MZR 2.5]
1. Disconnect the negative battery cable.
2. Remove the plug hole plate. Service and Repair
3. Remove the ignition coils. Service and Repair
4. Remove the ventilation hose. Service and Repair
5. Disconnect the camshaft position (CMP) sensor connector.
6. Disconnect the oil control valve (OCV) connector.
7. Remove the front wheel and tire (RH). Service and Repair
8. Set the front mudguard (RH) out of the way. Service and Repair
9. Remove the splash shield (RH).
10. Remove the aerodynamic under cover No.2. Aerodynamic Under Cover No. 2 Removal/Installation
11. Loosen the water pump pulley bolts and remove the drive belt. Service and Repair
12. Remove the crankshaft position (CKP) sensor. Service and Repair
13. Disconnect the drive shaft (RH) from joint shaft, set the drive shaft (RH) out of the way. (ATX) Drive Shaft Removal/Installation
14. Remove the coolant reserve tank. Service and Repair
15. Remove the P/S oil pump with the hoses and pipes still connected. (See Removal and Replacement.)
NOTE:
- Position and secure the P/S oil pump out of the way with a rope or wire.
16. Remove in the order indicated in the table.
17. Install in the reverse order of removal.
18. Start the engine. And inspect and adjust the following:
- Leakage of engine oil.
- Runout and contact of pulley and belt.
- Verify the ignition timing, idle speed and idle mixture. Service and Repair
Cylinder Head Cover Removal Note
1. Loosen the cylinder head cover bolts in the order shown in the figure.
Crankshaft Pulley Lock Bolt Removal Note
1. Rotate the crankshaft in the direction of the engine rotation and remove the cylinder block lower blind plug when the No. 1 cylinder is at the point prior to top dead center (TDC) of compression, then install the SST.
2. Rotate the crankshaft in the direction of the engine rotation so that the No.1 piston is at TDC of the compression stroke. (Until the counterweight contacts SST and stops.)
3. Hold the crankshaft pulley by using the SSTs.
No.3 Engine Mount Removal Note
1. Remove the air cleaner. Service and Repair
2. Install the SST using the following procedure.
CAUTION:
- Refer to the SST instruction manual for the basic handing procedure.
a. As shown in the figure, set the rear shafts of the SST to the left and right shock absorber bolts.
b. Install front foot No.2 to the left/right front shaft of the SST, then align the groove of the front shaft of the SST with the folded up part of the vehicle as shown in the figure.
c. Adjust the positions of the SST side bars so that they are the same height (left and right) and horizontal.
d. Make sure each joint is securely tightened.
3. Support the engine using the SST.
Chain Tensioner Removal Note
1. Using a thin screwdriver, hold the chain tensioner ratchet lock mechanism away from the ratchet stem.
2. Slowly compress the tensioner piston.
3. Hold the tensioner piston using a 1.5 mm {0.059 in} wire or paper clip.
Oil Pump Sprocket Removal/Installation Note
1. Temporarily install the crankshaft pulley and crankshaft pulley lock bolt to the crankshaft, and lock the oil pump against rotation as shown in figure.
2. Remove/install the oil pump sprocket, and then remove the crankshaft pulley and crankshaft pulley lock bolt.
Tightening torque
- 20-30 Nm {2.1-3.0 kgf-m, 15-22 ft-lbf}
Timing Chain Installation Note
1. Install the SST to the camshaft as shown.
2. Install the timing chain.
3. Remove the retaining wire or paper clip from the auto tensioner to apply tension to the timing chain.
Engine Front Cover Installation Note
CAUTION:
- Install the engine front cover before the applied silicone sealant starts to harden.
1. Apply silicone sealant to the engine front cover as shown.
Thickness
- A: 2.2-3.2 mm {0.09-0.12 in}
- B: 1.5-2.5 mm {0.06-0.098 in}
- C: 2.2-4.3 mm {0.09-0.16 in}
- D: 3.3-4.3 mm {0.13-0.16 in}
2. Install the engine front cover bolts in the order as shown.
No.3 Engine Mount Installation Note
NOTE:
- If the No.3 engine mount bracket and the engine are removed, retighten the No.3 engine mount stud bolts.
1. Tighten the No.3 engine mount stud bolts.
Tightening torque
- 7-13 Nm {72-132 kgf-cm, 62-115 in-lbf}
2. Install the No.3 engine mount rubber hand-tighten.
3. Tighten the No.3 engine mount bracket is attached and bolts, nuts in the order as shown.
Crankshaft Pulley Lock Bolt Installation Note
1. Install the SST to the camshaft as shown.
2. Verify that No.1 cylinder is at TDC of the compression stroke. (Position counterweight contacts SST.)
3. To position the crankshaft pulley, temporarily tighten it and, using a suitable bolt (M6 X 1.0), fix the crankshaft pulley to the engine front cover.
4. Hold the crankshaft pulley using the SSTs.
5. Tighten the crankshaft pulley lock bolt in the order shown in the following two steps using the SST (49 D032 316).
Tightening procedure
- 96-104 Nm {9.8-10 kgf-m, 71-76 ft-lbf}
- 87-93°
6. Remove the bolt (M6 X 1.0) installed to the crankshaft pulley.
7. Remove the SST from the camshaft.
8. Remove the SST from the cylinder block lower blind plug hole.
9. Rotate the crankshaft clockwise two turns and inspect the valve timing.
- If not aligned, loosen the crankshaft pulley lock bolt and repeat from Step 1.
10. Install the cylinder block lower blind plug.
Tightening torque
- 18-22 Nm {1.9-2.2 kgf-m, 14-16 ft-lbf}
Cylinder Head Cover Installation Note
CAUTION:
- Install the cylinder head cover before the applied silicone sealant starts to harden.
1. Apply silicone sealant to the mating faces as shown.
Thickness
- 4.0-6.0 mm {0.16-0.23 in}
2. Install the cylinder head cover with a new gasket.
3. Tighten the bolts in the order shown.
Tightening torque
- 8.0-9.5 Nm {82-96 kgf-cm, 71-84 in-lbf}
