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We have an international 956xl six cylinder,there is exssesive play in two of the exaust valve tappets,would this be the cause of it overheating when engine is under heavy load.

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Hey there I need the exhaust and Intake(valve) clearance for a komatsu 300-6 please


note Perform the valve clearance check and adjustment at the engine cold state. 1.Remove all of the ignition coils. 2.Remove the cylinder head cover.
caution Turn the crankshaft always clockwise. 3.Turn the crankshaft clockwise, and align the timing mark on the exhaust camshaft sprocket against the upper face of the cylinder head as shown in Figure. Therefore, No.1 cylinder goes to the compression top dead center. 4.Using a thickness gauge, measure the valve clearance with the arrow shown in Figure. If deviated from the standard value, make note for the valve clearance.
Standard value:

    Intake valve 0.20 ± 0.03 mm (0.008 ± 0.0012 inch)
    Exhaust valve 0.30 ± 0.03 mm (0.012 ± 0.0012 inch)
5.Turn the crankshaft clockwise 360 degrees, and put the timing mark on the exhaust camshaft sprocket in position shown in Figure. Therefore, No. 4 cylinder goes to the compression top dead center. 6.Check the valve clearance with the arrow shown in Figure. In the same procedure as 4.
7.If the valve clearance is deviated from the standard value, remove the camshaft and the valve tappet. For the camshaft removal, refer to Camshaft Removal and Installation . 8.Using a micrometer, measure the thickness of the removed valve tappet. 9.Calculate the thickness of the newly installed valve tappet through the following equation.
A: thickness of newly installed valve tappet
B: thickness of removed valve tappet
C: measured valve clearance
Equation

    Intake valve: A = B + [C - 0.20 mm (0.008 inch)]
    Exhaust valve: A = B + [C - 0.30 mm (0.012 inch)] note The valve tappet ranges 3,000 - 3,690 mm (0.1181 - 0.1453 inch) and has 47 types per 0.015 mm (0.0006 inch). The thickness below a decimal point is stamped on the reverse side of the valve tappet. 10.Install the valve tappet selected through the procedure 9, and put the camshaft in position. For the camshaft installation, refer to Camshaft Removal and Installation .
    11.After installing the timing chain, measure the valve clearance using the procedure 3 to 6. Confirm the clearance is within the standard value.
    caution Completely remove all the old FIPG, which might be remaining among the components. 12.After completely removing the liquid gasket adhering on the timing chain case, cylinder block and cylinder head, degrease them with white gasoline.
    caution The cylinder head cover should be installed within 3 minutes of applying liquid gasket.
13.Apply a 4 mm bead of liquid gasket as illustrated.
Specified sealant:
    THREE BOND 1217G or equivalent
14. Install the cylinder head cover and tighten the tightening bolts using the following procedures.
(1) Temporarily tighten to the following torque in order shown in the illustration.
Tightening torque: 3.0 ± 1.0 N·m (27 ± 8 in-lb)(2) Tighten to the specified torque in order shown in the illustration.
Specified torque: 5.5 ± 0.5 N·m (49 ± 4 in-lb)15.Install the ignition coils.

Jan 23, 2017 | Cars & Trucks

1 Answer

How do I set tappets of a 2.5 diesel turbo mazda


you haven't mentioned if it is a 4 cyl or not. However bring no 1 cylinder up to tdc and watch the tappets of the next cylinder to fire. when that cylinders rockers are in valve overlap situation ( exhaust starting to close and inlet starting to open) then that will be maximum clearance on no 1 cylinder and is when you set the tappets turning the engine until the next cylinder is at TDC watch for the next cylinder again to be in valve overlap and repeat as for no 1 cylinder

Dec 25, 2014 | Mazda Cars & Trucks

1 Answer

Will tappets on a pontiac 3.8 start rattling after motor overheats?


it can if the motor got very hot. you may have poor oil quality from overheating. damaged valve lifters, damaged camshaft/bearings, oil pump, water in oil which can cause engine damage from overheating. it will have to be checked out to find what caused the overheating then the lose of oil pressure to cause the rattle.

Aug 30, 2014 | Cars & Trucks

1 Answer

Valve settings


- Pull the hand brake and put transmission in neutral.
- Remove spark plug cords.
- Remove the spark plugs.
- Remove the Tappet cover
- Lift up the left front wheel.
Cylinder number 1 is toward the pulleys and belts side.
- Rotate the crankshaft anticlockwise with socket and extension rod and bring the valve tappets (intake and exhaust) No. 4 cylinder on dancing position.
NOTE: THERE ARE OTHER WAYS ALSO TO ADJUST THE FOUR VALVES AT A TIME. BUT AS DIY FOLLOW THE FOLLOWING METHOD TO AVOID ANY CONFUSION.
- Adjust the valve clearance of number 1 cylinder.
Valve clearance:
Intake 0.18 - 0.22 (cold) Exhaust 0.25 - 0.28 (cold)
- Rotate the crankshaft anticlockwise to bring the valves of cylinder 2 on dancing position and adjust the valves of No. 3 cylinder.
- Similarly rotate the crankshaft to bring the valves of No. 1 cylinder on dancing position and adjust the valves of No. 4.
- Rotate the crankshaft anticlockwise to bring the valves of cylinder No. 3 on dancing position and adjust the valve clearance of No. 2 cylinder.

May 04, 2013 | 1999 Honda Civic

1 Answer

Whats the procedure to adjust pushrods on a Harley evo motor equipped with solid lifters


Hi Anonymous, on old Harley Davidsons valve train tick can be caused by parts reaching thier service wear limits and based on years of experience and assuming that the tappet rollers and bearings and cam lobes are in good shape to eliminate anonnying valve tick I reccomend adjusting the pushrod when the the engine is warm to hot. When the front cylinder exhaust push rod is all the way up, adjust the rear cylinder exhaust push rod untill it spins but with noticeable drag. Then when the front cylinder intake push rod is all the way up adjust the rear cylinder intake push rod in the same manner. Apply the same procedure for adjusting front cylinder push rods. Good luck.

Mar 14, 2012 | Harley Davidson Motorcycles

1 Answer

I need to know the valve adjustment procedure and


Valve clearance ideal setting is 0.10mm however as ideal replacement size shims are not always available use tolerance 0.05 to 0.2mm inlet and exhaust Procedure remove tappet cover rotate motor to tdc compression (inlet valve lobe pointing to rear wheel and exaust lobe to front wheel) measure clearance if no clearance depress cam bucket hold down by wedging a screwdriver or suitable tool (allen key) between cam bucket and cam remove shim measure with micrometer an relace with a shim 0.15 thinner depress valve remove wedge and measure clearance (if any) repeat procedure 4 each cylinder if clearance to large replace shim with a thicker one till clearance is in spec

Jul 20, 2010 | 1981 Suzuki GS 750 L

1 Answer

Valves "Unadjustable" 2004 Dl-650


If the valves were bent, the engine wouldn't run worth a darn, if at all. What I suspect is that the exhaust valves have sank their way into their seats and are now positioned too far upward in the cylinder head to attain adequate tappet clearance. Exhaust valves have more of a tendency to do this because of their high thermal loading during operation. Then, as the engine continues to be operated - and the tappet clearance diminishes, the valves run even hotter, causing damage to the valve and seat ares.
So, to answer your question; yes, the previous owner did neglect it - by failing to keep the valve tappet clearances set correctly.
The only cure for this, sadly, would be to remove the head and replace the exhaust valves and recondition the cylinder head's valve seats. Of course it may turn out that the cylinder head valve seats are worn beyond repair, requiring a new cylinder head.

Nov 01, 2009 | 2004 Suzuki DL 650 V-Strom

1 Answer

I have a 1999 mercury tracer that has 184,000 miles. I'm the third owner....just recently purchased the car for my teen and now I'm being told that it needs a valve lifter. I'm curious as to wonder how...


good for the most part, it got to 184,000 miles didn't it.
WHy do you think it needs a lifter? IS it nosiy?

This is not a big job. Shouldn't cost over $200.

SECTION 303-01A: Engine — 2.0L SPI 1999 Escort/Tracer Workshop Manual
IN-VEHICLE REPAIR Valve Tappet Removal
sxf~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: If removing more than one valve tappet, mark the components removed for proper location.
  1. Remove the valve cover (6582); refer to Valve Cover .
  1. Remove the rocker arm (6564).
  1. Remove the valve tappet(s).
    1. Remove the valve tappet guide plate retainer(s).
    1. Remove the valve tappet guide plate(s)
    1. Remove the valve tappet(s).
Installation
  1. NOTE: Lubricate the valve tappet(s) with Super Premium 5W30 SAE Motor Oil XO-5W30-QSP or equivalent meeting Ford specification WSS-M2C153-G before installing.
    NOTE: Always return the valve tappet (6500) to their original bores unless they are being replaced.
    NOTE: The oil feed hole in the valve tappets must face away from the oil feed hole in the cylinder head (6049).
    NOTE: Be certain the valve tappet guide plate retainer tabs are toward the rear of the cylinder head , and the valve tappet guide plate tabs are toward the front of the cylinder head.
    To install, reverse the removal procedure.
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Apr 22, 2009 | Mercury Tracer Cars & Trucks

2 Answers

Tappet problem


the check prosidure requires you engine be cold engine at top dead center at #1 cylinder and cams timing markes aligned to markes. check only intake and exaust lifters with lobes in the released position. intake is .15-.25mm and exaust is .25-.35 mm. rotate the engine 180deg. to check the remaining cylinders. if exsesive play is exsperianced. You must remove cam shafts, and add a new shim to remove the clearence. this includes the timing chain.most engine machine shops have these shims.really suggest you go online for a sevice manule. you can ruin this engine if not performed properly. This is a zero clearence engine! (no clearence between valves and pistons.) any more questions i can help you with just send to my e mail.

Jun 25, 2008 | 2000 Toyota Corolla

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