Question about 2003 Volvo S40

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S40 2004 What holds the rod bearings in place? and Why the hell did they make a rod that breaks @ end cap to replace bearings?

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The rods are held to the crankshaft by and end cap with 2 very strong 10 mm bolts and nuts, these are made from really tough steel, what can make a rod fail, well a loose end cap will quickly destroy and often break a rod, over reeving the engine is the most common cause, also a burned out bearing, any thing that causes the rod to exceed it structural design specs will make it fail.

Posted on Oct 22, 2008

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Connected new rod bearings, and crank wont turn. ???


check that you kept the caps and rods as units as any one cap will not fit any other rod. The same goes for the main bearings. Have you got the correct size bearings for the crank shaft. Have you placed the rods in the cylinder correctly. have you placed the bearing slippers in the cap and rod correctly

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Replace rod bearings


Undo the big end caps and make sure that you keep them as units as they will not interchange with each other press on the end of the shell that does not have a tab sticking out. and press it down so that it slides around and out . Clean out the cap and con rod end before fitting new shells in place . Fit the tag end first and when almost in you may hear a small snap as they go into place proper.. The cap will only go together in one way so the numbers or marks will be together. If you have the motor apart make sure that the con rod is fitted in the right direction.

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How do I replace tie rods on front passenger side


loosen lock nut. clamp vice grips on inner tie rod to hold it from turning. Then unscrew tie rod end, counterclockwise. count the number of turns so you can screw new one on in same place. get front end alignment.

may need to heat the tie rod end with a torch to break it free from the rust.

soak for a week with penetrating oil first.

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1 Answer

2004 mazda 6 3.0L V6 main bearing caps(bootom end) has 16 bolts need torgue specs please!


Okay, the main bearing caps only have 10 bolts, i think your looking for the connecting rod caps, they have 16 bolts, i will list them both, theres a tightening sequnce for the main bearing caps, these are the caps that hold the crankshaft to the engine block, the connecting rod caps hold the pistons to the crank and they have 16 nuts,For a 2004 mazda 6 with the 3.0 engine the torque specs are as follows.
Connecting rod bolts step 1) 19.2 - 23.6 ft lbs.
step 2) tighten an additional 80 - 100 degrees

Main bearing caps step 1) 32.5 - 33.9 ft. lbs.
step 2) tighten an additional 175 -185 degrees.
heres a diagram for main caps to tighten in order.
hope this is helpful.fc3bff9.gif

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Rebuilding 4cylinder Camry.


For the piston to have touched the crank something is really wrong, worn pin in the piston, extremely worn rod, or bent rod. You need a competent machine shop to check everything and have your crank machined to fit the new bearings.

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1 Answer

I can't find any illustrations on tie rod ends or how to change the wheel bearings


tie rod ends you count the number of turns exposed and run the same number of turns on the new one after you install it. You can rap the side of the rod end with a hammer to break it loose, whack it!
Wheel bearings on the front you remove the wheels, remove the center cap on the hub, remove the cotter pin, then nut and washer, hub assembley will come off. Clean the spindle of old grease, remove the bearings, drive out and replace the old bearing races in the hub, install new races (cups) pack bearings in your clean hands with correct grease, install the bearings, install the washer, nut, tighten then back off a hair until you align the cotter pin hole. Do NOT overtighten, the bearings and races will be damaged! You snug the bearings to "seat them" then back off just enough that the wheels spin freely with no side to side play with the wheels installed to the hub. In other words grab the tires at the top and bottom and see if you have any movement toward the spindle or axle. Rear bearings are done the same way.

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1 Answer

U-joint changing


1.image
Operation: Most universal joints are held in place with a combination of pressed fit with a snap ring and either a bearing plate, bearing strap or a U-bolt. Advice: Most universal joints have two bearing caps pressed into the driveshaft and use a snap ring either on the inside or outside of the bearing cap to hold it in place. Some manufacturers use injected plastic instead of a snap ring. The injected plastic holds the cap in place under normal conditions but will break free when pressure is applied during the removal process. The replacement universal joint will use a snap ring instead of the injected plastic. The other two bearing caps are usually held in place by either a bearing plate, bearing strap or a U-bolt all of which can be removed with a normal ratchet and socket or wrench. Occasionally you will find all four bearing caps using the press fit method. In these cases two of the bearing caps will be pressed into a flange that unbolts from the differential or a slip yoke that slides off of the transmission tail shaft.

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1 Answer

I'm looking for the 2000 isuzu rodeo 3.2L v6 connecting rod bearings torque specs.


1. Check the connecting rod alignment If either the bend or the twist exceeds the specified limit,the connecting rod must be replaced. Bend per 100 mm (3.937 inch) Limit: 0.15 (0.0059) Twist per 100 mm (3.937 inch) Limit: 0.20 (0.0078)

2. Measure the connecting rod thrust clearance. Use a feeler gauge to measure the thrust clearance at the large end of the connecting rod If the clearance exceeds the specified limit, the connecting rod must be replaced. Standard: 0.16 mm - 0.35 mm (0.0063 inch - 0.0138 inch) Limit: 0.40 mm (0.0157 inch)

3. Measure the oil clearance between the connecting rod and the crankshaft.

    1. Remove the connecting rod cap nuts and the rod caps (12). Arrange the removed rod caps in the cylinder number order.
    2. Clean the rod bearings and the crankshaft pins.
      1. Carefully check the rod bearings. If even one bearing is found to be damaged or badly worn, the entire bearing assembly must be replaced as a set. Reinstall the bearings in their original positions. Apply plastigage to the crank pin.
      2. Reinstall the rod caps (12) to their original positions. Tighten the rod cap nuts. Torque: 54 Nm (40 ft. lbs.) Note: Do not allow the crankshaft to rotate.
      3. Remove the rod caps.
        1. Measure the width of the plastigage and determine the oil clearance. If the oil clearance exceeds the limit, replace the rod bearing as a set. Standard: 0.019 mm - 0.043 mm (0.0007 inch - 0.0017 inch) Limit: 0.08 mm (0.003 inch)
        2. Clean the plastigage from the bearings and the crankshaft pins.

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1 Answer

How do i remove the connecting rod cap once the nuts are removed?


get a soft mallet and firm but lightly tap the side of the cap. it should break loose. be sure to mark the ends of the cap so you dont put it together backwards, that can screw with the oil passages. if replacing the bearing its also a good idea to place a plastigauge strip btwn the cap and bearing then torque to spec. this will let you know what your bearing clearance is, should be some where in the range of .006-.008

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3 Answers

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Wrong oil filter. The one that was installed didn't have a anti-feed back valve in it. Most of the newer motors need that valve in the filter to keep oil from draining back into the eng oil pan.
Fast lube places don't stock the best of filters. Only their own or the cheapest ones. Not what the vechile makers call for. Get with your BBC or Consumer Agency to see what they say.

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