Why would you want to attempt that?
The thrust washers are flat HALF circles, located in the block at main bearing #3, and retained in place by the #3 main bearing cap. If there are 'tabs' on the thrust washers you've had it. If there are no tabs on them, you MIGHT be able to change them by taking off main bearing cap #3, and turning the old thrust washers out by poking one end of them, then feeding two new ones in.
I bet someone in LZ can tell you.
Buy a pair of thrust washers and then you will see if there are tabs on them. With any luck there won't be different thicknesses.
No tabs means job is possible in theory.
WITH tabs, crankshaft needs to come out.
CharlesY
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all diesel engines iv,e worked on thrust washers have tabs on the cap of the main bearing and none on the block side, this to enable you to change in situ. Years ago some older engines had the thrust washer as part of the main shell these were still changeable with the same above design. Never seen a thrust washer with the block side tabbed The only reason for the tab is to stop the thrusts from spinning.
Again the question why are you changing them??? usually only done on a rebuild don,t wear as they used to.???
Again the question why are you changing them??? usually only done on a rebuild don,t wear as they used to.???
The TD5 thrust washers are HALF circles, they are definitely set in the BLOCK (NOT in the big end cap), and they are held in place by the main bearing cap.
There is therefore no NEED for them to have location / anti-spin TABS because the main bearing cap holds them in place and stops them spinning.
I reckon he could be lucky, and manage this without dropping the crankshaft, but I am still asking WHY does he think he needs to do this? It is extremely unusual to wear out thrust washers. In my fifty years of engines, I have never seen damaged or worn-out thrust washers.
The crankshaft END FLOAT can be checked quite easily with NO dismantling. Here's how:
Push the clutch down, which presses the crankshaft all the way forwards.
Let the clutch pedal up.
Now use a lever to press the crankshaft pulley backwards. Whatever movement you get is the ENDFLOAT of the crankshaft. It will probably be so small you won't think there is any endfloat, but you can be sure, it has some.
Rave says ....
7. Move crankshaft forwards, measure and
record end-float obtained. Crankshaft end-float = 0.02 to 0.25 mm.
(that's anything between 1 and 10 thousandths of an inch)
8. If end-float exceeds above dimension, new
thrust washers must be fitted. Only one size of
thrust washer is available.
That's about it lads.
CharlesY
Think you need a Rave cd Charlesy is spot on.
Still like no why you want to replace them????
If the thrust washers have failed, the REAR one will be the worn one, and CLUTCH PROBLEMS will start to occur, and some terrible noises may happen every time the clutch pedal is pushed down.
If the washer is really badly worn down, the whole crankshaft will be able to move forwards, taking with it the BIG ENDS of the conrods, but the LITTLE ENDS of the conrods can't move forwards as they are trapped in the pistons.
I expect plenty of LZ readers can imagine the results.
If you can't, don't worry about it - just keep on driving till the engine disintegrates.
Catastrophic engine damage is a real possibility.
CharlesY
Sure does.
I still want to find out what makes him think he needs to change them.
CharlesY
distd5co
New Member
sorry i havnt been on. I have a problem with clutch clearance. the vehicle used to be an auto i have fitted a manual. i was curious to know if it was possible to change thrust washers with crank in situ. i will check end float when i have time. Ive had rave for the last 5 years. i have also found that their is often an alternative way to what i says on their.
I agree.
If there's one thing Autos tend NOT to wear out, it's the crankshaft thrust washers.
That's because an automatic doesn't have a clutch.
These washers are only under any strain is the REAR washer, when the clutch pedal is pressed. The full force of the clutch release bearing onto the clutch cover is taken by the rear thrust washer. That's another good reason for not sitting with the car stationary, engine running, and foot hard down on the clutch.
CharlesY
