Question about 1997 Land Rover Discovery

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Replacing my cylinder head on a Discovery 1 300tdi, but can't remove the dowels from the old head. How do these dowels come out?

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Try heating the dowels with a torch. That might be just enough to loosen them

Posted on Oct 07, 2010

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5.7l engine. How should I remove cylinder head?


If intake and all head bolts are removed, chances are the head is stuck to the gasket/block. The head will normally sit upon 2 dowel pins which will also,hold it secure. Use a prybar and gently apply force to the head. It will come loose

Oct 25, 2015 | Cars & Trucks

1 Answer

Head comes off plastic clips broke. Any fix?


Head comes off what ???
And what plastic clips ???
Give more of a question we need to know what it is you are trying to do, fix,
If at all you've removed a cylinder head from your vehicle and it has plastic type dowels to hold it in place you can change these dowels for steel ones before putting the head back on

Sep 12, 2015 | Cars & Trucks

1 Answer

I need a print out of how i can change out a head gasket on a 1995 mercury cougar


Removal
  1. Drain engine cooling system.
  1. Disconnect battery ground cable (14301) .
  1. Remove engine air cleaner (ACL) (9600) including air cleaner outlet tube (9B659) .
  1. Loosen drive belt tensioner (6B209). Remove drive belts (8620) .
  1. If LH cylinder head (6049) is being removed, perform the following:
    1. Remove oil filler cap (6766) .
    1. Remove power steering pump front mounting bracket retaining bolts.
    1. Remove generator (GEN) (10346) and belt idler pulley (8678).
    1. Remove power steering pump/generator bracket retaining bolts. Leave hoses connected, place pump/bracket assembly aside in a position to prevent fluid from leaking out.
  1. If RH cylinder head is being removed, perform the following:
    1. Remove drive belts .
    1. If equipped with A/C, remove mounting bracket retaining bolts. Leave hoses connected and position A/C compressor (19703) aside.
    1. Remove positive crankcase ventilation valve (PCV valve) (6A666) .
  1. Remove upper intake manifold (9424) .
  1. Remove valve cover retaining bolts.
  1. Remove fuel injection supply manifold (9F792).
  1. Remove lower intake manifold as outlined.
  1. Remove exhaust manifolds (9430) as outlined.
  1. Loosen rocker arm seat retaining bolts enough to allow rocker arm (6564) to be lifted off the push rod (6565) and rotate to one side.
  1. Remove push rods . Identify position of each push rod . Push rods should be installed in their original position during assembly.
  1. Remove cylinder head retaining bolts and discard.
  1. Remove cylinder heads .
  1. Remove and discard old head gaskets (6051) .
Installation
  1. NOTE: Lightly oil all bolts and stud bolt threads before installation except those specifying special sealant.
    Clean cylinder head, intake manifold , valve cover (6582) and head gasket surfaces. If cylinder head was removed for head gasket replacement, check flatness and sealing areas for scratches of cylinder head and cylinder block gasket surfaces. Refer to Section 03-00 for procedure.
  2. Position new head gaskets onto cylinder block (6010) using cylinder head to block dowels (6A008) for alignment.

    Head Gasket


    a11431c.gif

  3. Position cylinder heads onto cylinder block .
  4. ani_caut.gif CAUTION: Always use new cylinder head bolts to ensure a leak-tight assembly. Torque retention with used bolts can vary, which may result in coolant or compression leakage at the cylinder head mating surface area.
    -ft).
  5. For 3.8L non-SC engine, tighten cylinder head retaining bolts in numerical sequence in three steps as follows:
    1. 20 Nm (15 Lb-Ft)
    1. 40 Nm (29 Lb-Ft)
    1. 50 Nm (37 Lb-Ft)
  6. ani_caut.gif CAUTION: Do not loosen all of the bolts at the same time, only work on one bolt at a time or possible damage to engine or leakage may occur.
    In sequence, loosen retaining bolts two to three revolutions and retighten bolts one at a time in the following manner:
    1. Long bolts:
      • 15-25 Nm (11-18 lb-ft).
      • Tighten bolt an additional 85-95 degrees.
      • Go to next bolt in sequence.
    1. Short bolts:
      • 10-20 Nm (7-15 lb-ft).
      • Tighten bolt an additional 85-95 degrees.
      • Go to next bolt in sequence.


      a11399c.gif


      Item Part Number Description 1 6010 Cylinder Block 2 - Locating Pin (2 Req'd) 3 N802515-S Cylinder Head Bolt (4 Req'd Each Side) 4 6049 Cylinder Head 5 N802516-S Cylinder Head Bolt (4 Req'd Each Side) 6 6A008 Cylinder Head to Block Dowel
  7. NOTE: If original valve train components are being installed, a valve clearance check is not required. If a component has been replaced, perform a valve clearance check as outlined.
    Dip each push rod end in Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford Specification ESR-M99C80-A and install push rods in their original position.
  8. For each valve, rotate crankshaft (6303) until valve tappet (6500) rests on the heel (base circle) of the camshaft lobe, before tightening rocker arm seat retaining bolts to 7-15 Nm (5-11 lb-ft) maximum.
  9. Lubricate all rocker arms with Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford Specification ESR-M99C80-A. Final-tighten the rocker arm seat bolts to 30-40 Nm (22-30 lb-ft). For final tightening, camshaft (6250) may be in any position.
  10. Install exhaust manifolds as outlined.
  11. Install lower intake manifold as outlined.
  12. Install fuel injection supply manifold .
  13. Position valve cover and new valve cover gasket (6584) on cylinder head and install retaining bolts. Note location of ignition wire routing clip stud bolts. Tighten retaining bolts to 9-12 Nm (7-9 lb-ft).
  14. Install upper intake manifold .Install spark plugs (12405) , if removed.
  15. Connect ignition wires to the spark plugs .
  16. If LH cylinder head is being installed, perform the following:
    1. Install oil filler cap.
    1. Install generator/power steering pump mounting bracket.
    1. Install generator .
    1. Install main accessory drive belt tensioner .
    1. Install power steering pump (3A674) .
    1. Install power steering pump support bracket.If RH cylinder head is being installed, perform the following:
    1. Install positive crankcase ventilation valve .
    1. If equipped with A/C, install A/C compressor mounting brackets (2882) and A/C compressor .
  17. Install drive belt and tighten to specification.
  18. Connect battery ground cable .
  19. Install air cleaner outlet tube.
2010&c18=modelyear&c35=wsm%2ccylinder%20heads%2cssd%2c03-01a%2cin-vehicle%20service&s=1249x702&c=32&j=1.3&v=y&k=y&bw=910&bh=359&ct=lan&hp=n&[aqe]

Mar 06, 2011 | Mercury Cougar Cars & Trucks

1 Answer

Need to know lbs of torque and sequence for the heads on a 1995 jeep wrangler with a 2.5


From autozone.com:
To install:

  1. Thoroughly clean the gasket mating surfaces. Remove all traces of old gasket material. Remove all carbon deposits from the combustion chambers. Lay a straightedge across the head and check for flatness. Total deviation should not exceed 0.001 in. (0.025mm).

The cylinder head gasket used on the 2.5L engine is a composition gasket. The gasket is to be installed dry. Do not use gasket sealing compound on the gasket.
  1. Fabricate 2 cylinder head alignment dowels from 2 used cylinder head bolts. Cut the head of the longest bolt off below the hex head. Then cut a slot in the top of the dowel to allow easier removal with a screwdriver.
  2. Install one dowel in bolt hole No. 10 and the other dowel in bolt hole No. 8.
  3. Place the cylinder head gasket over the dowels with the numbers facing up.
  4. Place the cylinder head over the dowels.
  5. Coat the threads of bolt No. 7 only, with Loctite PST sealant or equivalent.
  6. Install all head bolts except Nos. 8 and 10.
  7. Tighten the bolts in the sequence shown in the illustration to the following:
    1. Tighten bolts 1 through 10 in sequence to 22 ft. lbs. (30 Nm).
    2. Tighten bolts 1 through 10 in sequence to 45 ft. lbs. (61 Nm).
    3. Recheck bolts 1 through 10 in sequence to verify that they are 45 ft. lbs. (61 Nm).
    4. Tighten bolts 1 through 6 in sequence to 110 ft. lbs. (149 Nm).
    5. Tighten bolt 7 to 100 ft. lbs. (136 Nm).
    6. Tighten bolts 8 through 10 to 110 ft. lbs. (149 Nm).


During the final tightening sequence, bolt No. 7 will be tightened to a lower torque than the rest of the bolts. Do not overtighten bolt No. 7.
  1. Connect the temperature sending unit wire.
  2. Install the spark plugs.
  3. Install the compressor.
  4. Install the compressor/alternator bracket mounting bolt.
  5. Adjust the alternator drive belt.
  6. Install the air conditioning compressor drive belt.
  7. Install the intake and exhaust manifolds.
  8. Install the power steering pump bracket.
  9. Install the pushrods. Keep them in order!
  10. Install the rocker arms. Keep them in order!
  11. Thoroughly clean the mating surfaces of the head and rocker cover and install as outlined earlier in this section.
  12. Install the air cleaner.
  13. Connect the hoses at the thermostat housing.
  14. Connect the battery ground.
  15. Fill the cooling system.
  16. 1a34825.gif

Sep 23, 2010 | Jeep Wrangler Cars & Trucks

1 Answer

How to replace head gasket 1998 Lumina


Cylinder Head Removal & Installation 3.1L Engine To Remove:
NOTE: With some minor variations, this procedure can be used on both the left and right cylinder heads.
  1. Raise and safely support the vehicle.
  2. Drain the engine coolant and the engine oil. Lower the vehicle.
  3. Remove the upper and lower intake manifolds.
  4. Remove the rocker arms and pushrods.
  5. Remove the exhaust crossover pipe.
  6. Remove the engine mount strut bracket.
  7. If removing the left side (front) head, remove the dipstick tube.
  8. Tag for identification, then remove the spark plug wires.
  9. Remove the spark plugs.
  10. Remove the exhaust manifold using the procedures found in this section.
  11. Remove the eight cylinder head bolts, then remove the cylinder head. There are locator pins that align the head to the block. Pull upwards on the head to disengage the pins, then remove the cylinder head to a suitable work area.
  12. If the head is be overhauled, remove any remaining components such as the engine lift hook, the fuel line bracket bolts, the engine coolant temperature sensor, etc., as required.
Position a new gasket, install the head, then tighten the bolts in the sequence shown (3.1L engine shown) 93173g43.gif

To Install:
NOTE: If the head gasket failed, determine the cause. Gasket failure is caused by the following conditions: improper installation; overheating due to a failure in the electric cooling fan system or a leak in the cooling system; loose or warped cylinder head; missing, off location or not fully seated locator dowel pins; low torque on the cylinder head bolts; warped block surface; scratched or gouged gasket surfaces; excessive intake manifold torque and even cracked engine block tapped holes.
  1. Clean all parts well. Remove all foreign material to the bare metal. Do not use a motorized wire brush on any gasket sealing surface. It is good practice to use the proper size thread-cutting tap to clean the threaded bolt holes in the block. This helps assure an accurate torque reading.
  2. Place a new head gasket on the clean engine block deck surface. Many gaskets will have some sort of marking denoting TOP or THIS SIDE UP. Make sure the gasket sits flat and is not hung up on the locator dowel pins. Use no sealer on the head gasket.
  3. Carefully set the cylinder head in place, using care not to damage the gasket. Make certain that the head engages the locator dowel pins that properly position the head.
  4. The bolts should be very clean since dirt built-up on the bolt threads makes it difficult to get an accurate torque reading. These are 'torque to yield' bolts which stretch a small amount when tightened; new bolts are always recommended. On a used vehicle, especially a high-mileage vehicle, it may be difficult to determine if the heads have been removed before and how many cycles the bolts have been removed and tightened. New bolts should be part of any cylinder head service. Use GM Sealer #1052080, or equivalent, on the threads of the head bolts and install all eight bolts, finger-tight.
  5. With an accurate torque wrench, tighten the bolts gradually, in sequence, working from the center outwards. Final torque should be 33 ft. lbs. (45 Nm), plus an additional 90 degrees (1/4-turn). A torque angle meter is recommended.
  6. Install the remaining components in the reverse order of the removal process.

Aug 11, 2010 | 1998 Chevrolet Lumina

1 Answer

Whats the tourqe on head bolts 1990 4 cylinder


1990–95 VEHICLES
  1. Disconnect the battery ground.
  2. Drain the cooling system. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  3. Disconnect the hoses at the thermostat housing.
  4. Remove the air cleaner.
  5. Remove the rocker arm cover as outlined earlier in this section.
  6. Remove the rocker arms. Keep them in order!
  7. Remove the pushrods. Keep them in order!
  8. Remove the power steering pump bracket.
  9. Suspend the pump out of the way.
  10. Remove the intake and exhaust manifolds.
  11. Remove the air conditioning compressor drive belt.
  12. Loosen the alternator drive belt.
  13. Remove the compressor/alternator bracket mounting bolt.
  14. Unbolt the compressor and suspend it out of the way. DO NOT DISCONNECT THE REFRIGERANT LINES!
  15. Remove the spark plugs.
  16. Disconnect the temperature sending unit wire. Fig. 6: Disconnect the coolant hoses at the thermostat housing 85353100.jpg
    Fig. 7: Disconnect the coolant hoses at the thermostat housing 85353101.jpg
    Fig. 8: Remove the cylinder head–to–block bolts 85353102.jpg
    Fig. 9: Cylinder head bolt removed from the head 85353103.jpg
    Fig. 10: Removing the cylinder head from the engine block 85353104.jpg

  17. Remove the head bolts.
  18. Lift the head off the engine and place it on a clean workbench.
  19. Remove the head gasket. To install:
  20. Thoroughly clean the gasket mating surfaces. Remove all traces of old gasket material. Remove all carbon deposits from the combustion chambers. Lay a straightedge across the head and check for flatness. Total deviation should not exceed 0.001 in. (0.025mm). NOTE: The cylinder head gasket used on the 2.5L engine is a composition gasket. The gasket is to be installed dry. Do not use gasket sealing compound on the gasket.
  21. Fabricate 2 cylinder head alignment dowels from 2 used cylinder head bolts. Cut the head of the longest bolt off below the hex head. Then cut a slot in the top of the dowel to allow easier removal with a screwdriver.
  22. Install one dowel in bolt hole No. 10 and the other dowel in bolt hole No. 8.
  23. Place the cylinder head gasket over the dowels with the numbers facing up.
  24. Place the cylinder head over the dowels.
  25. Coat the threads of bolt No. 7 only, with Loctite PST sealant or equivalent.
  26. Install all head bolts except Nos. 8 and 10.
  27. Tighten the bolts in the sequence shown in the illustration to the following:
    1. Tighten bolts 1 through 10 in sequence to 22 ft. lbs. (30 Nm).
    2. Tighten bolts 1 through 10 in sequence to 45 ft. lbs. (61 Nm).
    3. Recheck bolts 1 through 10 in sequence to verify that they are 45 ft. lbs. (61 Nm).
    4. Tighten bolts 1 through 6 in sequence to 110 ft. lbs. (149 Nm).
    5. Tighten bolt 7 to 100 ft. lbs. (136 Nm).
    6. Tighten bolts 8 through 10 to 110 ft. lbs. (149 Nm). NOTE: During the final tightening sequence, bolt No. 7 will be tightened to a lower torque than the rest of the bolts. Do not overtighten bolt No. 7.
  28. Connect the temperature sending unit wire.
  29. Install the spark plugs.
  30. Install the compressor.
  31. Install the compressor/alternator bracket mounting bolt.
  32. Adjust the alternator drive belt.
  33. Install the air conditioning compressor drive belt.
  34. Install the intake and exhaust manifolds.
  35. Install the power steering pump bracket.
  36. Install the pushrods. Keep them in order!
  37. Install the rocker arms. Keep them in order!
  38. Thoroughly clean the mating surfaces of the head and rocker cover and install as outlined earlier in this section.
  39. Install the air cleaner.
  40. Connect the hoses at the thermostat housing.
  41. Connect the battery ground.
  42. Fill the cooling system.

Jul 08, 2010 | 1990 Jeep Wrangler

2 Answers

Torque specification on a 2003 alero cylinder heads 3.4 liter


3.4L Engine To Remove:
  1. Remove the lower intake manifold.
  2. Remove the exhaust crossover pipe.
  3. If removing the right cylinder head, remove the catalytic converter from exhaust manifold.
  4. If removing the left cylinder head, remove the engine oil dipstick and tube.
  5. Remove the rocker arms and pushrods.
  6. Remove and discard the cylinder head bolts.
  7. Remove the cylinder head.
  8. Clean the mating surfaces on the following items:
    • Cylinder head
    • Cylinder block
    • Intake manifold
  9. Clean the cylinder block bolt threads.
NOTE: During disassembly, keep the valve train components together for proper location during assembly.
To Install:
NOTE: Coat the cylinder head bolt threads using thread sealer.
  1. If removed, install the following components:
    • Exhaust manifold
    • Accessory studs
    • Spark plugs
  2. Place the cylinder head gasket in position over the dowel pins. Ensure that the THIS SIDE UP note is showing.
  3. Install the cylinder head. Cylinder head torque sequence ’99-‘00 gmpc_v6_14.gif

    Cylinder head torque sequence ’01-05 gm-03-34-682.gif

  4. Install the new cylinder head bolts.
    • Tighten the cylinder head bolts a first pass to 44 ft lb (60 Nm).
  5. Tighten the cylinder head bolts in sequence an additional 95 degrees.
  6. Install the intake gasket.
  7. Install the pushrods and rocker arms.
  8. Raise and support the vehicle.
  9. Install the catalytic converter and dipstick tube and indicator if removed.
  10. Lower the vehicle.
  11. Install the exhaust crossover pipe.
  12. Install the intake manifolds.
  13. Connect negative battery cable.
  14. Fill the cooling system.

Jul 03, 2010 | 2003 Oldsmobile Alero

1 Answer

1990 ford escort zx2 torque for the engine head bots


Not sure what engine you have but it's the same for the 1.8L and 1.9L. Hope this helps.. Cobra!!
Installation
CAUTION: Before installing the cylinder head, check the piston squish height as outlined.
  1. Clean all gasket material from the mating surfaces on the cylinder head and block. Clean out the bolt holes in the block.
  1. Install the dowels. Check the dowel height (11.75/10.40). When using replacement parts, a long dowel may be encountered. A long dowel will not allow the cylinder head to sit properly and should not be used.
  1. Position the cylinder head gasket on the cylinder block.
  1. Apply a light coating of engine oil to the threads of the new cylinder head bolts. Install the new cylinder head bolts to the cylinder head. Following the sequence shown, tighten the attaching bolts to 40-60 Nm (29-44 lb-ft). Loosen all attaching bolts approximately two turns, then retighten the attaching bolts to 60 Nm (44 lb-ft) following the sequence shown. After tightening, turn all bolts 90 degrees, in the same sequence. Complete bolt tightening by turning them an additional 90 degrees, in the same sequence.
6d294e3.gif

Jun 15, 2010 | 1999 Ford Escort

1 Answer

1999 Land Rover Discovery II engine miss


Observe the engine running in the dark to see if there are any spark jumps from the wires or coil, you may have a carbon track.....

Feb 16, 2010 | 2001 Land Rover Discovery Series II

2 Answers

What is the tension on cylinder head bolts for a jeep grand cherokee 307935 4 litre, 6 cylinder, 1999, petrol motor.


Coat threads of left hand front bolt with sealant: 1st - step; - 22 ft./lbs. 2nd - step; - 45 ft./lbs. 3rd - step, all bolts except L.H. front bolt; - 110 ft./lbs. 4th - step, L.H. front bolt; - 100 ft./lbs. fig100.png

Sep 05, 2009 | 1999 Jeep Grand Cherokee

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