I'm in the process of replacing my timing belt so I decided to replace the seals behind the camshaft sprocket, intermediate pulley, and the crankshaft pulley.

I came across a video on YouTube that I've been using as guidance throughout the process so that I don't miss any steps. In the video, however, I noticed that when the mechanic took off the camshaft sprocket there was a washer in-between the seal and the sprocket. I don't recall seeing the washer when I dissembled it. Did I most likely misplace it? Is it crucial to have the washer? If so, where can I purchase this item?

I have a 1992 Volvo 240...

 

I don't recall seeing the washer when I replaces my seals and timing belt recently. But here is the part in question.

1992 Volvo 240 2.3l Fuel Injected Washer. Genuine Classic Part. ENG, Head, Engine - 1357572 - Genuine Volvo Part

 

@Nichals - That's it! I'm going to play it safe and order the washer. Thanks!

 

Yes, you definitely need the washer to distribute the the load on the sprocket properly from the bolt. You also may need it the washer so the bolt doesn't bottom out.

 

In the VADIS parts diagram, I only see a washer between the bult and the cam pulley, nothing behind it other than the seal and shaft itself. there are washer-like locating plates on either side of the timing belt sprocket on the crankshaft, however.

 

I'm changing my answer, IPD includes that washer with their adjustable cam gear. And instructions state, "If during installation it is found that the belt rides too far to the front of the cam gear, use the included factory shim to position the gear properly, this is primarily for B21,B23 engines." I didn't need it but perhaps some B230 engines needed them?

 

@KRD - Thats interesting...I installed the washer and noticed that the belt does slide forward.

Could the washer cause the belt to ride forward? I've been searching for an answer but haven't had much luck. I stumbled upon a thread that mentions a similar issue and it concluded that the timing belt tensioner induced the belt to slide forward...

I still have the washer installed and the engine runs fine. No distinct vibration or noticeable changes when driving. I'm guessing the guide washers at the crankshaft are doing its job. I'm going to check the belt once I've driven 500 miles and see where the belt sits and if there are any areas of abrasion.