Timer installation details and issues.

This picture is the front of the engine where the timer mounts:

Timer case fits in this recessed area

ggroogroove

Seal goes in here. Note

seal ID rides on cam nut

seal OD fits into casting.

Camshaft boss.

Rotor fits against it.

Camshaft

Cam gear nut

An easy way to see the camshaft, camshaft gear and cam gear nut:

Here is a camshaft, gear and nut assembled.

Cam Gear

		Camshaft

Here is how it fits onto the camshaft.

This gear has the proper thickness web (thickness of gear at hub) of ¼ inch.

The cam gear nut is flush with the The rotary contact has

camshaft boss (where the rotor seats) clearance to operate freely.

If the cam gear web or hub is too thick, the

cam gear locknut will set further out on the camshaft:

Here, the nut overhangs the camshaft boss which will allow the rotor to

Slip under the nut and the rotary contact will bind.

What’s the cure?

--Use timing gear with proper web thickness.

--Trim Cam gear Nut to compensate for thicker gear web thickness.

--Place shim on camshaft before installing rotor.

Proper shims are available from Frank’s Timer Service.

Note also that now the rotor has been moved outward more than normal, so the rotary contact may scrape on the inside of the timer housing. A special shorter rotor is made just for this problem and also the problem where the camshaft is installed outward too far. Contact factory for a short rotor.

Pix of marks where rotor scraped Pix showing camshaft boss

the inside of timer case sticking out from normal position

User assumes all risks.

Frank’s Timer Service, 2251 Morgan Lane, Ingleside, TX 78362

Telephone: 361-230-0318, e-mail: Frank@andersontimer.com

www.andersontimer.com