Point the intake cam lobe down and the timing mark on the cam gear at the 12 o clock position with the piston at TDC.
the exhaust cam should be lined up 9 o clock position and the intake cam is lined at the 3 o clock position you pretty much have to get the align tool or otherwise a screwdriver in exhaust cam since it doesn't stay still
when should I change the cam belt on a 2002 VW Passat 1.8S with 48000 on the clock
Crank gear dot should point stright up / 12o clock with #1 pistion at TDC.all the way up at the top of #1 cylinder.The cam gear dot should point stright down At 6o clock. That will make both dots stright over top of each other. Then the crank and cam will be in time.
you can do it either way #1or #6 for number one cylinde your dot on the cam needs Tobe on 12o;clock if the dots are together you need to strat at number#6 your crank is always at 12;o;clock
It only matters when you install the timing chain and gears. Crank gear must be straight up at 12 o clock. Cam gear straight down at 6o clock when installing chain and gears. # 1 piston must be at top dead center/ all the way up before installing chain and gears. Don't matter were it's at when installing cam.
Really doesn't make a lot of difference - install them with the hole towards the oil passage to the mains. #1 to #5 1 is the front one , with the heads up the oil holes for #1 there are 2 of them equal distant from 6 o clock , #2 through to #4 set at 5 o clock and #5 at 12 o clock
you need to remove the timing cover and make sure the cam is pointed to 3 o clock and the crank gear has a small 0 on the timing gear that has to be pointed at 12 o clock
have key way at top strate up and down
Timing belts ( cam belts ) will conform to the shape of the cam and crank pulleys ( and the tensioners ) while sitting around for any length of time. They become brittle over time as any polymer would. When you start a motor that has sat idle for a long time you risk breaking the cam belt. Manufacturers recommend changing the cam belt on most VW's every 80K miles or 4 years, wichever comes first.
Hi the timing marks are 1 on the bottom plastic cover at approx 12 clock the other on cam pulley behind line it up with the tappet cover hope this helps cheers Peter
the cam gear mark is set at 6 o' clock and the crank gear mark is set at 12 o'clock.