How to replace Timing chain on 1985 Oldsmobile Cutlass?

The procedure to replace timing chain

The details and diagrams are as follows:---

See Figures 1, 2, 3, 4, 5, 6 and 7

V8 Chevrolet Built Engines

All Chevrolet V8 engines are equipped with a timing chain.

1. Remove the crankcase front cover. This will allow access to the timing chain.
2. Crank the engine until the marks punched on both sprockets are closest to one another and in line between the shaft centers.
3. Take out the three bolts that hold the camshaft sprocket to the camshaft. This sprocket is a light press fit on the camshaft and will come off readily. It is located by a dowel. The chain comes off with the camshaft sprocket.
4. A gear puller will be required to remove the crankshaft sprocket.

To install:

5. Without disturbing the position of the engine, mount the new crank sprocket on the shaft, then mount the chain over the camshaft sprocket.
6. Arrange the camshaft sprocket in such a way that the timing marks will line up between the shaft centers; and the camshaft locating dowel will enter the dowel hole in the cam sprocket.
7. Place the cam sprocket, with the chain mounted over it, in position on the front of the camshaft and pull up with the three bolts that hold it to the camshaft.
8. After the sprockets are in place, turn the engine two full revolutions to make certain that the timing marks are in correct alignment between the shaft centers.
9. Install the crankcase front cover.

V8 Oldsmobile Built Engines

1. Disconnect the negative battery cable. Remove the timing case cover and take off the camshaft gear.

The fuel pump operating cam is bolted to the front of the camshaft sprocket and the sprocket is located on the camshaft by means of a dowel.

2. Align the timing marks on the sprockets.
3. Remove the oil slinger, timing chain, and the camshaft sprocket. If the crankshaft sprocket is to be replaced, remove it also at this time. Remove the crankshaft key before using the puller. If the key can not be removed, align the puller so it does not overlap the end of the key, as the key-way is only machined part of the way into the crankshaft gear.

Fig. Fig. 1: Before removing the timing chain, make sure the valve timing marks are properly aligned

Fig. Fig. 2: Remove the camshaft sprocket attaching bolt and fuel eccentric

Fig. Fig. 3: Remove the camshaft sprocket

Fig. Fig. 4: Use a puller to loosen the crankshaft sprocket

Fig. Fig. 5: Before completely removing the crankshaft sprocket, remove the crankshaft key

To install:

4. Reinstall the crankshaft sprocket being careful to start it with the keyway in perfect alignment since it is rather difficult to correct for misalignment after the gear has been started on the shaft. Turn the timing mark on the crankshaft gear until it points directly toward the center of the camshaft. Mount the timing chain over the camshaft gear and start the camshaft gear up on to its shaft with the timing marks as close as possible to each other and in line between the shaft centers. Rotate the camshaft to align the shaft with the new gear.
5. Install the fuel pump eccentric with the flat side toward the rear.
6. Drive the key in with a hammer until it bottoms.
7. Install the oil slinger.

263 Oldsmobile Built Diesel Engines

Any time the timing chain and gears are replaced on the diesel engine it will be necessary to re-time the engine. Refer to the paragraph on Diesel Engine Injection Timing.

Fig. Fig. 6: Engine front cover and timing chain assembly - 350 Oldsmobile diesel engines

Fig. Fig. 7: Timing mark alignment - Oldsmobile built engines

1. Remove the front cover. Remove the valve covers.
2. Loosen all rocker arm pivot bolts evenly so that lash exists between the rocker arms and valves. It is not necessary to completely remove the rocker arms unless related service is being performed.
3. Remove the crankshaft oil slinger and the camshaft sprocket bolt and washer.
4. Remove the timing chain, camshaft and crankshaft sprockets. If the crankshaft sprocket is a tight fit on the crankshaft use an appropriate puller to remove it.

To install:

5. If the camshaft sprocket-to-cam key comes out with the camshaft sprocket, remove the front camshaft bearing retainer and install the key into the injection pump drive gear. Install the bearing retainer.
6. Install the key in the crankshaft, if removed.
7. Install the camshaft sprocket, crankshaft sprocket and the timing chain together, align the timing marks on the camshaft and the crankshaft. Tighten the camshaft sprocket bolt to 64 ft. lbs. (86 Nm)
8. Install the oil slinger and the remaining parts of the front cover assembly.
9. After installing the front cover, bleed down the valve lifters as instructed in Diesel Engine, Rocker Arm Replacement, above.
10. Remaining installation is the reverse of removal. Sealant is used in place of valve cover gaskets.

These details will help.
Thanks.

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How To Replace Timing Chain, Cover & Sprockets On Ford Ranger?

Timing Chain, Cover & Sprockets replacing on Ford Ranger:---


Timing Chain, Cover & Sprockets
REMOVAL & INSTALLATION Details are as follows:---

2.3L Engine

Specific to:

Ford Ranger 2008-2009

WARNING

Do not loosen or remove the crankshaft pulley bolt without first installing the special tools as instructed in the crankshaft pulley procedure. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if the pulley bolt is loosened. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special tools, otherwise severe engine damage may occur.

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

   Fan and shroud

   Drive belt

   Valve cover
3. Set No. 1 piston to TDC and install the Camshaft Alignment Plate 303-376, or equivalent.
4. Remove the plug for the crankshaft timing peg.
5. Install the Crankshaft Timing Peg 303-507, or equivalent.
6. Install an M6 bolt into the crankshaft pulley to verify the engine timing. Refer to Crankshaft Damper Removal & Installation in this section.
7. Remove or disconnect the following:
   
   NOTE

   This step is needed only if a new front cover is being installed.
   
   
   
   
   Camshaft pulley

   Crankshaft position sensor

   Belt tensioner

   Water pump pulley

   Power steering high pressure hose. Remove the nylon O-ring.

   Power steering return hose

   Power steering pump
8. Using a three-jaw puller, remove the fan drive pulley.
   
   NOTE

   There is one bolt behind the cooling fan drive pulley. This bolt can be accessed by lining up one of the holes in the pulley with the bolt.
9. Remove the bolts and the engine front cover.
10. Compress the timing chain tensioner and remove the tensioner.
11. Remove the right-hand timing chain guide.
12. Remove the timing chain.
13. Remove the bolts and the left-hand timing chain guide.
    
    WARNING

    Do not rely on the Camshaft Alignment Plate to prevent camshaft rotation. Damage to the tool or the camshaft can occur.
14. If necessary, remove the bolts and the camshaft sprockets. Use the flats on the camshaft to prevent camshaft rotation. 
    
    
    
    Fig. Timing chain tensioner removal; 1-paper clip, 2-bolts-2.3L engine
    
    
    
    

    

    Fig. Right side timing chain guide-2.3L engine
    
    
    
    

    

    Fig. Timing chain removal-2.3L engine
    
    
    
    

    

    Fig. Left timing chain guide-2.3L engine
    
    
    
    

    

    Fig. Camshaft alignment plate installed-2.3L engine

To install:

1. Remove the special tool.
   
   WARNING

   Do not rotate the camshafts. Damage to the valves and pistons can occur.

If the camshaft sprockets were not removed, use the flats on the camshafts to prevent camshaft rotation and loosen the sprocket bolts.

1. If removed, install the camshaft sprockets and the bolts. Do not tighten the bolts at this time.
   
   
   

   

   Fig. Front cover torque sequence-2.3L engine
2. Install or connect the following:
   
   
   Left-hand timing chain guide and bolts

   Timing chain

   Right-hand timing chain guide

   Timing chain tensioner and release the piston

   Timing chain tensioner and the bolts
3. Remove the drill rod to release the piston.
4. Install the special tool.
   
   WARNING

   Do not rely on the Camshaft Alignment Plate to prevent camshaft rotation. Damage to the tool or the camshafts can result. Using the flats on the camshafts to prevent camshaft rotation, tighten the bolts.
   
   
   
   NOTE

   This step is needed only if a new front cover is being installed.
5. Install the fan drive pulley using a nut and bolt with flat washers.
6. Clean and inspect the mounting surfaces of the engine and the front cover.
   
   NOTE

   The engine front cover must be installed and the bolts tightened within four minutes of applying the silicone gasket and sealant.
7. Apply a 2.5 mm bead of silicone gasket and sealant to the cylinder head and oil pan joint areas. Apply a 2.5 mm bead of silicone gasket and sealant to the front cover.
8. Install the front cover. Tighten the bolts in the sequence shown, to the following specifications:
   
   
   Step 1: 8 mm bolts to 89 inch lbs. (10 Nm)

   Step 2: 10 mm bolts to 18 ft. lbs. (25 Nm)

   Step 3: 13 mm bolts to 35 ft. lbs. (48 Nm)
9. Install or connect the following:
   
   NOTE

   Do not reuse the crankshaft damper bolt.
   
   
   
   
   Power steering pump and lower retaining bolt

   Power steering return hose

   New nylon O-ring and install the high pressure line.

   Water pump pulley

   Belt tensioner
   
   
   
   
   Crankshaft pulley and hand-tighten the bolt
10. Install an M6 bolt in the crankshaft pulley.
11. Install a new crankshaft pulley bolt. Using the Crankshaft Damper Holding Tool and a suitable 1/2-in drive hand tool to hold the crankshaft pulley in place, tighten the crankshaft pulley bolt in 2 stages:
    
    
    Step 1: 74 ft. lbs. (100 Nm)

    Step 2: Rotate the bolt an additional 90 degrees.
12. Install the crankshaft position sensor, do not tighten the bolts at this time.
13. Adjust the crankshaft position sensor with the Alignment Tool, and tighten the mounting bolts.
14. Connect the crankshaft position sensor electrical connector.
15. Remove the M6 bolt from the crankshaft pulley.
16. Remove the Crankshaft Timing Peg 303-507.
17. Install the plug.
18. Remove the Camshaft Alignment Plate 303-376.
19. Install the valve cover.
20. Install the drive belt.
21. Install the fan and shroud.
22. Connect the battery ground cable.

3.0L Engine

Specific to:

Ford Ranger 2008

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine coolant.
3. Remove the accessory drive belt.
4. Remove the fan and shroud assembly. Remove the bolts and the coolant pump pulley.
5. Remove the nut and detach the wiring harness bracket.
6. Remove the nut and position the A/C hose and bracket assembly aside.
7. Remove the stud bolts from the A/C compressor mounting bracket.
8. Remove the bolt and the accessory drive belt tensioner.
9. Remove the bolts and position the power steering bracket and compressor aside.
10. Disconnect the heater hose at the coolant pump.
11. Disconnect the lower radiator hose assembly at the coolant pump outlet and lower intake manifold.
12. Remove the crankshaft front seal.
13. Remove the oil pan
14. Remove the crankshaft position (CKP) sensor.
15. Disconnect the CKP sensor electrical connector.
16. Remove the 2 bolts and the CKP sensor.
17. Remove the bolts and the stud bolts, and remove the engine front
18. Remove and discard the front cover gasket.
    
    
    

    

    Fig. Engine front cover-3.0L engine
19. Rotate the crankshaft and align the timing marks.
    
    
    

    

    Fig. Timing marks-3.0L engine
20. Remove the camshaft bolt.
21. Remove the timing chain, the camshaft sprocket and the crankshaft sprocket as an assembly.

To install:

1. Align the timing marks.
2. Install the timing chain, the camshaft sprocket and the crankshaft sprocket as an assembly.
3. Install the camshaft bolt and tighten to 46 ft. lbs. (63 Nm).
4. Clean all sealing surfaces and position a new front cover gasket.
5. Position the engine front cover.
6. Apply pipe sealant with PTFE to the bolts to be installed in the locations shown.
   
   
   

   

   Fig. Apply pipe sealant with PTFE to the bolts to be installed in the locations shown
7. Install the engine front cover bolts and tighten to 18 ft. lbs. (25 Nm).
   
   
   

   

   Fig. Install the engine front cover bolts and tighten to 18 ft. lbs. (25 Nm).
8. Position the CKP and install the 2 bolts. Tighten to 89 inch lbs. (10 Nm).
9. Connect the CKP sensor electrical connector.
10. Install the oil pan.
11. Install the crankshaft front seal.
12. Connect the lower radiator hose assembly at the coolant pump outlet and lower intake manifold.
13. Connect the heater hose at the coolant pump.
14. Position the A/C compressor and power steering bracket. Install the bolts and tighten to 35 ft. lbs. (47 Nm).
15. Install the accessory drive belt tensioner and install the bolt to 20 ft. lbs. (27 Nm).
16. Install the stud bolts to the A/C compressor mounting bracket and tighten to 35 ft. lbs. (47 Nm).
17. Position the A/C hose and bracket assembly and install the nut. Tighten to 96 inch lbs. (11 Nm).
18. Position the wiring harness bracket and install the nut. Tighten to 89 inch lbs. (10 Nm).
19. Install the coolant pump pulley and the bolts. Tighten to 18 ft. lbs. (25 Nm).
20. Install the fan and shroud assembly.
21. Install the accessory drive belt.
22. Fill and bleed the cooling system.
23. Start the vehicle and check for leaks, repair if necessary.

4.0L Engine
Left Camshaft Drive Chain Cassette-4.0L Engine

Specific to:

Ford Ranger 2008-2009

1. Before servicing the vehicle, refer to the Precautions Section.
2. Release the fuel system pressure.
3. Disconnect the negative battery cable.
4. Drain the cooling system.
5. Remove the valve covers.
6. Remove the fuel rail.
7. Remove the engine front cover.
8. Remove the thermostat housing.
9. Remove all of the roller followers.
   
   WARNING

   The LH and RH camshafts must be retimed when either camshaft is disturbed.
10. Turn the crankshaft clockwise to position the No. 1 cylinder at Top Dead Center (TDC).
11. Remove the LH hydraulic chain tensioner. Discard the washer.
12. Remove the LH camshaft sprocket bolt.
13. Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564 and tighten the bolts to 10 Nm (89 lb-in).
    
    
    

    

    Fig. Install the Camshaft Sprocket Holding Tool and the Adapter for 303-564
14. Remove the LH camshaft sprocket bolt.
15. Using the Crankshaft Holding Tool to prevent the crankshaft from turning, remove the jackshaft sprocket bolt.
    
    
    

    

    Fig. Using the Crankshaft Holding Tool to prevent the crankshaft from turning, remove the jackshaft sprocket bolt
16. Remove the 2 bolts and the primary chain tensioner.
17. Remove the primary chain and sprockets as an assembly.
18. Remove the LH cassette upper bolt.
    
    
    

    

    Fig. Remove the LH cassette upper bolt
19. Remove the LH cassette lower bolt and the LH cassette.
    
    
    

    

    Fig. Remove the LH cassette lower bolt
    
    
    
    

    

    Fig. Left timing cassette-4.0L engine-exploded view

To install:

NOTE

The camshaft chain sprockets must be oriented correctly.

1. Position the LH cassette.
2. Install the LH cassette lower bolt and tighten to 168 inch lbs. (19 Nm).
3. Install the LH cassette upper bolt and tighten to 106 inch lbs. (12 Nm).
4. Install the jackshaft chain and sprockets as an assembly.
5. Install the jackshaft chain tensioner and the bolts. Tighten to 80 inch lbs. (9 Nm).
6. Using the Crankshaft Holding Tool to prevent the crankshaft from turning, tighten the jackshaft sprocket bolt in 2 stages:
   
   
   Stage 1: Tighten to 33 ft. lbs. (45 Nm).

   Stage 2: Tighten an additional 90 degrees.
7. Loosely install the camshaft sprocket bolt.
8. Install the engine front cover
   
   NOTE

   The LH and RH camshafts must be retimed when either camshaft is disturbed. Refer to Camshaft Removal & Installation in this section. (Camshaft Timing)
9. Install the LH hydraulic chain tensioner during camshaft timing.
10. Time the LH and RH camshafts. Refer to Camshaft Removal & Installation in this section. (Camshaft Timing)
11. Install the camshaft roller followers. Refer to Camshaft Removal & Installation in this section.
12. Install the thermostat housing.
13. Install the fuel rail.
14. Install the valve covers.
15. Connect the negative battery cable.
16. Fill and bleed the cooling system.
    
    WARNING

    The LH and RH camshafts must be retimed when either camshaft is disturbed.
17. Start the vehicle and check for leaks, repair if necessary.

Right Camshaft Drive Chain Cassette-4.0L Engine

Specific to:

Ford Ranger 2008-2009

The engine must be removed to service the RH Camshaft drive chain cassette.

These details will help.

Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

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