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15th August 2010, 12:03 PM
#1
TB42 Tappet Adjustment
This is a widely ask question by many DIYers so I've set it out in point form so whom ever needs it may copy & print it out for future use.
TB42 Tappet adjustment.
Adjusting Intake and Exhaust Valve Clearance
Adjustment should be made while engine is warm but not running
1. Set No. 1 cylinder at top dead centre on its compression stroke,(with timing marks aligned remove distributor cap the rotor button should be pointing at number 1 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 1,2,3,6,7,10
2. Set No. 6 cylinder at top dead centre on its compression stroke, (with timing marks aligned remove distributor cap the rotor button should be pointing at number 6 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 4,5,8,9,11,12
Valve clearance
Intake 1,3,5,7,9,11 - 0.38mm (0.015 in)
Exhaust 2,4,6,8,10,12 - 0.38mm (0.015 in)
Adjusting screw lock nuts - 16 - 22 Nm (1.6 - 2.2 kg/m, 12 - 16 ft/lb)
If you are running duel fuel it is a good idea to set your tappets 1 to 2 thou bigger in gap as LPG has a tendency to close up the gap.
Although this is a widely used practice its not an absolute necessity.
Cheers
Paul
Last edited by patch697; 15th August 2010 at 12:53 PM.
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15th August 2010 12:03 PM
# ADS
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15th August 2010, 03:38 PM
#2
Administrator
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15th August 2010, 06:38 PM
#3
The proceedure for TD42 is exactly the same, but you wont be able to check the rotar button postion to confirm whether it's 1 or 6 on TDC. Easy way to tell is set crank to TDC by timing marks, if both rockers on No. 1 are rocking then No. 1 is on TDC. Like wise No. 6. I'm not sure of valve clearance for TD42 but from memory I think it's .0014 in.
Tony
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15th August 2010, 08:58 PM
#4
Patrol God
and 3.3 turbo whats the go there please guys?
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10th September 2010, 10:45 PM
#5
Patrol God
Originally Posted by
patch697
This is a widely ask question by many DIYers so I've set it out in point form so whom ever needs it may copy & print it out for future use.
TB42 Tappet adjustment.
Adjusting Intake and Exhaust Valve Clearance
Adjustment should be made while engine is warm but not running
1. Set No. 1 cylinder at top dead centre on its compression stroke,(with timing marks aligned remove distributor cap the rotor button should be pointing at number 1 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 1,2,3,6,7,10
2. Set No. 6 cylinder at top dead centre on its compression stroke, (with timing marks aligned remove distributor cap the rotor button should be pointing at number 6 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 4,5,8,9,11,12
Valve clearance
Intake 1,3,5,7,9,11 - 0.38mm (0.015 in)
Exhaust 2,4,6,8,10,12 - 0.38mm (0.015 in)
Adjusting screw lock nuts - 16 - 22 Nm (1.6 - 2.2 kg/m, 12 - 16 ft/lb)
If you are running duel fuel it is a good idea to set your tappets 1 to 2 thou bigger in gap as LPG has a tendency to close up the gap.
Although this is a widely used practice its not an absolute necessity.
Cheers
Paul
another one for the file as it can be for any thing that needs index
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13th September 2010, 01:07 AM
#6
Expert
Thanks paul very handy to have as I will be doing this soon cheers
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13th September 2010, 01:09 AM
#7
Originally Posted by
Russell1974
Thanks paul very handy to have as I will be doing this soon cheers
What you running Russ TB or TD?
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13th September 2010, 01:51 AM
#8
Expert
Originally Posted by
patch697
What you running Russ TB or TD?
I have the 4.2 turbo diesel
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15th September 2010, 07:04 PM
#9
Hi everyone,
That is a very good write-up on tappet adjustments Paul, very specific. I particularly liked the mention of visually looking at the rotor to indicate TDC firing. I did not use that method in my writings. I would like to offer another view if I may. I have written an article myself on my website which explains three methods of adjusting tappets that is tranferrable to almost any engine. Hopefully this link www.tuning.mbs.id.au/TechTalk/TT2.htm will take you directly to the article without going through my site, but if it doesn't please go to www.tuning.mbs.id.au Click on the Tech Talk menu on the left & then click on the TT2 button. Hope it is useful to you.
Chhers
Mike
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10th February 2011, 04:47 AM
#10
Someone will tell me where to find cheap valves and valve lifters? I did the disassembly and are nearly all destroyed ....
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