How do I remove and replace the timing chain on a nissan x trail 2x4 2005 model?

Most vehicles with timing chains have a cover over the chain that it attached to the oil pan. There are gaskets that have to be replaced between the two and removal of the pan is recommended to do this properly. Trying to avoid it can result in a number of issues, from gasket material falling into the sump to oil leaks from not having the lower part of the cover sealed properly.

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Have to remove variable valve timing cover, alternator, ps pump, tensioner, a/c compressor, motor mount and bracket, upper and lower oil pan, crankshaft pulley. I just replaced my timing chain- Not a job for a beginner, took a VERY long time. Recommended to support engine and remove subframe but not totally necessary.

Instructions

1. Remove Your Timing Chain
   • 1 Check your owner's manual for the recommended mileage for replacing your timing chain. Replacement for a Nissan Altima is 60,000 miles.
     
   • 2 Locate the timing chain. Replace it if the automatic chain adjuster (also known as the tensioner) is damaged or worn.
     
   • 3 Drain the cooling system and disengage the negative battery cable. Undo the spark plug wires and set the No. 1 piston at "Top Dead Center" (TDC) of the compression stroke.
     
   • 4 Disconnect the engine undercover, vacuum and fuel hoses, harness and connectors, drive belts, power steering reservoir, alternator and bracket, upper radiator hose, air duct, front exhaust tube, intake manifold collector supports, collector and exhaust manifold and the distributor.
     
   • 5 Prop up the oil pan and take out the front engine mounting, the valve cover, camshaft sprockets, cam bearing caps, camshafts, cylinder head bolts (reverse the installation order), cam sprocket cover, upper chain tensioner, chain guides and chain, idler sprocket bolt, cylinder head, intake manifold and cylinder head gasket and the steel oil pan.
     
   • 6 Place a steel cutter between the steel and aluminum oil pans. Slip the cutter around the oil pan's edge. Disengage the steel oil pan, baffle plate, oil strainer and the front tube.
     
   • 7 Secure the car on jack stands and place a seal cutter in between the oil pan and cylinder block. Slip the cutter around the oil pan's edge.
     
   Install Your Timing Chain
   • 8 Reconnect the crankshaft sprocket, oil pump drive spacer, idler sprocket and lower timing chain. Position the lower timing chain on the sprockets and line up the mating marks.
     
   • 9 Rub on an unbroken bead of liquid gasket and put in a new front cover and oil seal. Secure the bolt at 105 to 112 foot pounds (142 to 152 Nm).
     
   • 10 Eliminate any old material from the pan and cylinder block mounting surfaces. Rub on a 3.5 to 4.5mm bead of liquid gasket over the oil pan and cylinder block.
     
   • 11 Attach the upper timing chain to the idler sprockets and secure the cylinder head bolts.
     
   • 12 Refill the cooling system and add clean oil in the engine.
     
   • 13 Hook up the negative battery cable and any other disconnected parts or items. Start the engine and look for leaks.
     

Tips & Warnings

• Procedures for replacing timing chains in Nissan Altimas vary slightly depending on engine size.
  
• Make sure the new timing chain matches the chain you are removing.
  

Check your owner's manual for the recommended mileage for replacing your timing chain. Replacement for a Nissan Maxima is 60,000 miles.2 Locate the timing chain. Replace it if the automatic chain adjuster (also known as the tensioner) is damaged or worn.3 Release the pressure in the fuel system, drain the cooling system and disengage the negative battery cable. 4 Undo the upper radiator hose, engine drive belts, power steering pulley and pump with bracket, air duct, passenger front wheel and engine side and undercovers, front exhaust pipe, cylinder head front mounting bracket and head cover, rocker cover, distributor and distributor cap and spark plugs.5 Take off the intake manifold support and move the No. 1 piston at "Top Dead Center" (TDC) of the compression stroke.6 Disconnect the cylinder head front cover, water pump pulley, thermostat housing, upper and lower tensioner and slack side timing chain guide, idler sprocket bolt, camshaft sprocket bolts, sprockets, mounting caps and camshafts. 7 Disengage the cylinder head with the manifolds, idler sprocket shaft, upper timing chain, center crossmember, oil pan and strainer assembly, crankshaft pulley, engine front mount and bracket and the front timing cover. Remove the oil seal and unfasten the timing chain cover, idler and crankshaft sprockets and the oil pump drive spacer. 8 Unfasten the timing chain guide. install Your Timing Chain 1 Grease the oil seal lip with engine oil and place it in the front cover. Verify that the No. 1 piston is at "Top Dead Center" (TDC) of the compression stroke. 2 Reconnect the crankshaft sprocket (marks should point toward the engine's front), oil pump drive spacer and timing chain guide and the lower timing chain. Line up all mating marks.3 Hook up the crankshaft sprocket and pulley, lower timing chain, front cover assembly, engine mount and front mounting bracket, oil strainer and pan assembly and center crossmember.4 Reattach the upper timing chain, idler sprocket (to the back side), cylinder head assembly, idler sprocket bolt and exhaust and intake camshafts. Place the intake camshaft knock pin at 9 o'clock and the exhaust pin at noon. Connect the camshaft bearing caps and distributor brackets and secure all mounting bolts.5 Eliminate any old material from the pan and cylinder block mounting surfaces. Rub on a 3.5 to 4.5mm bead of liquid gasket over the oil pan and cylinder block.6 Attach the upper timing chain to the idler sprockets and secure the cylinder head bolts.7 Refill the cooling system. Hook up the negative battery cable and any other disconnected items. Start the engine and look for leaks.

you have to remove the oilpans,not the cylinder head.

Engine - Timing Chain/Front Cover Revised Procedure
Classification:
EM98-009
Reference:
NTB98-107
Date:
January 15, 1999
GA16DE TIMING CHAIN/FRONT COVER
REVISED SERVICE PROCEDURE
APPLIED ENGINE:
GA16DE
APPLIED MODELS:
1991-94 Sentra (B13) w/GA16DE
1991-93 NX1600 (B13)
1995-99 Sentra (B14) w/GA16DE
1995-98 200SX (B14) w/GA16DE
SERVICE INFORMATION
A revised service procedure for the engine front cover/timing chain has been adopted for the GA16DE. It is no longer recommended to remove the
cylinder head when removing the timing chain/front cover(s). Utilize the following steps when servicing the front cover, timing chain, guides or
tensioner(s)
PARTS INFORMATION
CLAIMS INFORMATION
Please reference the "Revision C" pages of the Nissan "1992-1999 Warranty Flat Rate Information Manual", Section "AG", Op Codes AG12AA,
AG14AA, AG142A, AG143A, AG144A and AG24AA. Also reference Section "CA", Op Codes CA20AA and CA22AA. You will note that the
descriptions and flat rate times applicable to the B13 and B14 vehicles (with GA16DE engines) for these Op Codes have been revised to reflect this
new procedure.
Caution
^ After removing the timing chain, do not turn the crankshaft and camshaft separately or the valves will strike the piston heads.
^ When installing chain tensioners or other sliding parts, lubricate contacting surfaces with new engine oil.
^ Apply new engine oil to bolt threads and seat surfaces when installing the camshaft sprockets and the crankshaft pulley.
^ Do not spill engine coolant on the drive belts.
^ Please refer to the Service Manual for the correct tightening torque.
Removal
1. Set # 1 piston at TDC on its compression stroke.
2. Remove the spark plug wires.
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 2
3. Remove the rocker cover (see Figure 1).
4. Remove the coolant reservoir tank with bracket and reposition it for clearance.
5. Support the engine with a suitable jack.
6. Remove cylinder head front mounting bracket.
7. Remove engine front mounting, then the engine front mounting bracket.
8. Remove cylinder head front cover.
9. Remove the upper chain tensioner (see Figure 2).
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 3
10. Wipe off the links of the upper timing chain next to the timing marks on the sprockets. Put paint marks on the timing chain, matching them with
the timing marks on the cam sprockets and idler sprocket (see Figure 3)
11. Remove the four (4) front cover to cylinder head bolts.
12. Remove side and lower engine compartment splash covers.
13. Remove the accessory drive belts.
14. Remove the crankshaft pulley.
15. Drain coolant by removing the cylinder block drain plug and opening the radiator drain **** (Refer to MA section of the Service Manual).
16. Drain engine oil.
17. Remove intake manifold support of engine front side.
18. Remove power steering pump, pump bracket and tension rod. Position pump aside for clearance.
19. Remove the thermostat housing (See Figure 4).
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 4
20. Remove the lower chain tensioner (see Figure 5).
21. Remove the front exhaust tube. Refer to the "FE" section (Exhaust System) of the Service Manual.
22. Remove the front and rear engine gussets (if equipped) on either side of the oil pan.
NOTE:
On A/T models, remove the rear plate cover.
23. Remove the oil pan (see Figure 6).
a. Insert the Tool between the cylinder block and oil pan.
CAUTION:
Be careful not to damage the aluminum mating face. Do not insert a screwdriver, or the oil pan flange will become damaged.
b. Slide the Tool by tapping it on the side of the Tool with a hammer.
24. Remove the A/C compressor and position it aside for clearance.
25. Remove the A/C and alternator bracket with the alternator.
26. Remove the oil pump drive spacer.
CAUTION:
Be careful not to scratch the drive spacer when removing it.
27. Remove the front cover bolts and front cover.
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 5
CAUTION:
One bolt is located on the water pump (see Figure 7).
*1: Located on engine front mounting bracket.
*2: Located on the water pump.
*3: Located on the power steering oil pump adjusting bar.
CAUTION:
Be careful not to tear or damage the cylinder head gasket.
28. Remove the cylinder block to front cover alignment dowels.
CAUTION:
Do not hit the dowels or the cylinder block will crack.
29. Wipe off the links of the lower timing chain next to the timing marks on the sprockets. Put paint marks on the timing chain, matching them with
the timing marks on the idler sprocket and crankshaft sprocket (see Figure 8).
Installation
1. Install the crankshaft sprocket, making sure the mating marks face the front of the engine.
2. Install the idler sprocket and lower timing chain using the mating marks and the paint marks made during the removal process.
CAUTION:
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 6
Be careful not to tear or damage the cylinder head gasket.
3. Install the lower chain guides.
4. Front cover installation:
a. Using a scraper or other suitable tool remove all traces of liquid gasket from the cylinder block and front cover mating surfaces.
b. Install new crankshaft seal in front cover.
c. Install new oil passage O-rings and apply a continuous bead of RTV sealant to the front cover (see Figure 1).
NOTE:
Use Genuine Nissan RTV silicone sealant P/N 999MP-A7007, Three Bond P/N TB1207D or equivalent.
d. Install the front cover to the engine.
CAUTION:
Be careful not to tear or damage the cylinder head gasket or oil seal.
5. Align oil pump drive spacer with the oil pump, and install.
6. Install the oil strainer.
7. Install oil pan, referring to "Installation" in the "OIL PAN" section of the Service Manual.
8. Install upper timing chain and sprockets, using the painted reference marks made during removal.
9. Install upper chain tensioner.
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 7
a. Before installing the chain tensioner, insert a suitable pin into the pin hole of the chain tensioner (see Figure 2) to hold the tensioner in.
b. Once the tensioner is installed, remove the pin.
10. Install the lower chain tensioner (See Figure 3).
NOTE:
Make sure the gasket is facing the proper direction before installing the tensioner.
CAUTION:
Now rotate the crankshaft by hand. Check that no binding or interference problems occur when the engine is rotated.
11. Install the thermostat housing.
a. Use a scraper to remove all traces of liquid gasket from the mating surfaces of the engine front cover and the thermostat housing.
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 8
b. Apply a continuous bead of RTV sealant to the housing as shown in Figure 4.
NOTE:
Use Genuine Nissan RTV silicone sealant P/N 999MP-A7007, Three Bond P/N TB1207D or equivalent.
12. Install camshaft sprocket cover:
a. Use a scraper to remove all traces of liquid gasket from the mating surfaces of the cylinder head and camshaft sprocket cover.
b. Apply a continuous bead of RTV sealant to the cover as shown in Figure 5.
NOTE:
Use Genuine Nissan RTV silicone sealant P/N 999MP-A7007, Three Bond P/N TB1207D or equivalent.
d. Install camshaft sprocket cover.
1995 Nissan-Datsun 200SX L4-1597cc 1.6L DOHC MFI (GA16DE) Page 9
13. Apply RTV sealant to rocker cover gasket (see Figure 6a) and install rocker cover, tightening the bolts as shown in Figure 6b.
14. Install the following parts:
a. Crankshaft pulley.
b. A/C compressor and alternator bracket with alternator.
c. A/C compressor.
d. Power steering oil pump and tension rod.
15. Install front and rear engine gussets (if equipped), and rear cover plate (A/T models).
16. Install front exhaust tube.
17. Install upper right engine bracket and mount.
18. Install coolant reservoir tank.
19. Install alternator, power steering and A/C compressor drive belts.
20. Install engine compartment splash guards.
21. Install vacuum hoses, electrical harnesses and connectors.
22. Install spark plug wires.
23. Refill with coolant. Refer to the "MA" section ("Changing engine coolant, Engine Maintenance") of the Service Manual.
24. Refill with engine oil. Refer to the "MA" section ("Changing engine oil, Engine Maintenance") of the Service Manual.

2.2L VIN 4 To Remove:

1. Remove or disconnect the following:
   • Drive belt.
   • Drive belt tensioner.
   • Alternator.
   • Power steering pump. Place the pump aside with the lines attached.
2. Lift the vehicle.
3. Remove or disconnect the following:
   • Oil pan.
   • Crankshaft pulley and hub.
   • Timing cover bolts.
   • Timing cover. If necessary, tap with a rubber mallet to loosen the cover.
4. Clean the mating surfaces.

To Install:

1. Install or connect the following:
   • Timing cover gasket.
   • Timing cover and the bolts. Tighten the bolts to 11 Nm (97 in. lbs.).
   • Crankshaft pulley hub and the crankshaft pulley.
   • Oil pan.
2. Lower the vehicle.
3. Install or connect the following:
   • Power steering pump.
   • Alternator.
   • Drive belt tensioner.
   • Drive belt.

You do not need to remove the upper oil pan. There are 2 bolts that go through the oil pan into the front cover that has to be removed. You do not need to remove the transfer case to remove the front timing cover. After you have the bolts under the front cover that go through that lower oil pan, and the bolts all around the timing cover off, just work the cover slowly till it pops free.

Thanks Jay!

This MAY seem Strange But It IS ALL necessary for Oil Pump Replacement. And Please Don't Forget to Rate Me as Most Folks Do Not. Thank You and GOOD LUCK with the Oil Pump Job Also


OIL PUMP
It is necessary to remove the oil pan, oil pickup and chain case cover to service the oil pump rotors. The oil pump pressure relief valve can be serviced by removing the oil pan and oil pickup tube. Refer to Timing Chain Cover Removal and Installation for procedures.

DISASSEMBLY

1. To remove the relief valve, proceed as follows:
2. Drill a 3.175 mm (1/8 inch) hole into the relief valve retainer cap and insert a self-threading sheet metal screw into cap.

1. Clamp screw into a vise and while supporting chain case cover, remove cap by tapping chain case cover using a soft hammer. Discard retainer cap and remove spring and relief valve.
2. Remove oil pump cover screws, and lift off cover.
3. Remove pump rotors.

1. Wash all parts in a suitable solvent and inspect carefully for damage or wear.

Oil Pump Assembly

1. Assemble pump, using new parts as required. Install the inner rotor with chamfer facing the cast iron oil pump cover.
2. Tighten cover screws to 12 Nm (105 inch lbs.).
3. Prime oil pump before installation by filling rotor cavity with engine oil.
4. Install chain case cover. Refer to Timing Chain Cover Installation.

REMOVAL of Timing cover
REMOVAL

1. Disconnect negative cable from battery.
2. Remove timing chain cover.

REMOVAL Of Oil Pan to gain Access to OIL PUMP

1. Disconnect negative cable from battery and remove engine oil dipstick.
2. Raise vehicle on hoist and drain engine oil.
3. Remove bending brace to transaxle attaching bolt.
4. Remove bolts attaching dust cover to transaxle housing. Lower dust cover to gain access to oil pan bolts.
5. Remove oil pan screws and remove oil pan.

INSTALLATION

1. Clean surfaces and apply a 1/8 inch bead of Mopar (R) Silicone Rubber Adhesive Sealant or equivalent, at the parting line of the chain case cover and the rear seal retainer.
   1. Use a new pan gasket.
   2. Install pan and tighten screws to 12 Nm (105 inch lbs.).
   3. Install dust shield and bending brace to transaxle housing.
   4. Lower vehicle and install oil dipstick.
   5. Connect negative cable to battery.
   6. Fill crankcase with oil to proper level.