Camshafts, Bearings, & Lifters Replacement For Acura?

Camshafts, Bearings, & Lifters
INSPECTION
REMOVAL & INSTALLATION: ---

The details are as follows :----

Inspection

1. Remove the cylinder head.
2. Remove the rocker arms.
3. Put the rocker shafts on the cylinder head, then tighten the bolts to the specified torque, as follows:
   1. Apply engine oil to the bolt threads and flange.
   2. Tighten the 8 x 1.255mm bolts to 17 ft. lbs. (24 Nm).
      
      

      Fig. Rocker shaft bolt tightening sequence
4. Seat the camshaft by pushing it toward the rear of the cylinder head.
5. Zero the dial indicator against the end of the camshaft. Push the camshaft back and forth and read the end play. If the end play is beyond the service limit, replace the thrust cover and recheck. If it is still beyond the service limit, replace the camshaft:
   1. Standard (new): 0.002-0.008 in. (0.05-0.20mm)
   2. Service Limit: 0.008 in. (0.20mm)
      
      
      

      

      Fig. Zero the dial indicator against the end of the camshaft. Push the camshaft back and forth and read the end play
6. Remove the camshaft thrust cover, then pull out the camshaft.
7. Wipe the camshaft clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored or excessively worn.
8. Use a micrometer to measure the diameter of each camshaft journal.
9. Zero the gauge to the journal diameter.
   
   
   

   

   Fig. Zero the gauge to the journal diameter
10. Clean the camshaft bearing surfaces in the cylinder head. Measure the inside diameter of each camshaft bearing surface, and check for an out-of-round condition:
    
    
    If the camshaft-to-holder clearance is within limits of 0.0020-0.0035 in. (0.050-0.089mm), go to step 11.

    If the camshaft-to-holder clearance is beyond the service limit of 0.006 in. (0.15mm), and the camshaft has been replaced, replace the cylinder head.

    If the camshaft-to-holder clearance is beyond the service limit of 0.006 in. (0.15mm), and the camshaft has not been replaced, go to step 10.
    
    

    

    

    Fig. Measure the inside diameter of each camshaft bearing surface, and check for an out-of-round condition
11. Check total runout with the camshaft supported on V-blocks:
    
    
    If the total runout of the camshaft is within the service limit of 0.001 in. (0.03mm) max, replace the cylinder head.

    If the total runout is beyond the service limit 0.002 in. (0.04mm), replace the camshaft and recheck the oil clearance. If the oil clearance is still out of tolerance, replace the cylinder head.
    
    

    

    

    Fig. Check total runout with the camshaft supported on V-blocks
12. Measure cam lobe height and compare with the following cam lobe height standard (new):
    
    
    PRI Intake: 1.3676 in. (34.737mm)

    MID Intake: 1.4348 in. (36.445mm)

    SEC Intake: 1.3748 in. (34.919mm)

    Exhaust: 1.4302 in. (36.326mm)
    
    

    

    

    Fig. Measure cam lobe height

Removal & Installation

2003-06 Models
Front

1. Before servicing the vehicle, refer to the precautions section.
2. Remove or disconnect the following:
   
   
   Negative and positive battery cables

   Battery
3. Drain the coolant.
   
   
   Upper radiator hose

   Exhaust Gas Recirculation (EGR) vale

   Timing belt

   Rocker arm assembly

   Front camshaft pulley

   Thrust plate and camshaft

To install:

1. Install or connect the following:
   
   
   Camshaft using a new O-ring. Tighten the thrust plate to 16 ft. lbs. (22 Nm).

   Front camshaft pulley

   Rocker arm assembly

   Timing belt

   Exhaust Gas Recirculation (EGR) vale

   Battery

   Positive, then negative battery cables
2. Fill the cooling system. 
   
   
   Camshaft 
   
   

   

   

   Fig. Front camshaft assembly-2003-06 models

   
   
   

   Start the engine and check for leaks.

Rear

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the cooling system.
3. Relieve the fuel system pressure.
4. Remove or disconnect the following:
   
   
   Negative battery cable

   Under-hood fuse box

   Fuel feed hose

   Nuts securing the fuel line
   
   

   

   

   Fig. Remove the nuts attaching the fuel line when removing the rear camshaft-2003-06 models

   Brake lines from the master cylinder

   Timing belt

   Rocker arm assembly

   Rear camshaft pulley

   Thrust plate and camshaft

To install:

1. Install or connect the following:
   
   
   Camshaft using a new O-ring. Tighten the thrust plate to 16 ft. lbs. (22 Nm).

   Rear camshaft pulley

   Rocker arm assembly

   Timing belt

   Brake lines to the master cylinder

   Nuts securing the fuel line

   Fuel feed hose

   Under-hood fuse box

   Negative battery cable

2001-02 Models

1. Before servicing the vehicle, refer to the precautions section.
2. Remove or disconnect the following:
   
   
   Negative battery cable

   Air intake tube

   Accessory drive belts

   Front cover

   Timing belt

   Camshaft sprockets

   Timing belt rear covers

   Ignition coil covers

   Intake manifold cover

   Intake manifold

   Valve cover

   Rocker arms and shaft assembly

   Camshaft thrust cover

   Camshaft
   
   

   

   

   Fig. Rocker arm shaft loosening sequence-2001-02 models

To install:

NOTE

Use new O-rings, seals and gaskets when installing the camshaft.

1. Install or connect the following:
   
   
   Camshaft

   Camshaft thrust cover. Tighten the bolts to 16 ft. lbs. (22 Nm).

   Rocker arms and shaft assembly

   Valve cover

   Intake manifold

   Intake manifold cover

   Ignition coil covers

   Timing belt rear covers

   Camshaft sprockets. Tighten the bolts to 67 ft. lbs. (90 Nm).

   Timing belt

   Front cover

   Accessory drive belts

   Air intake tube

   Negative battery cable
2. Start the engine and check for leaks.

This details will help.

Thanks.

Below is the master help link provided to go through belt routing diagram:---

Timing belt, drive belt, serpentine belt, accessory belt, fan belt, engine belt routing diagrams for all types of car models

http://carbeltrouting.blogspot.in/2012/02/timing-beltdrive-beltserpentine.html 

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html