Volvo Maintenance Hints for 7xx/9xx - Bill Garland's Nuclear ...

plate TDC is with the flex plate arrow to the top of the engine, not the 'long tooth' on the sensor part of the flex
plate. I suggest the following:
Find TDC for cylinder one, however you want to do it. I took off the top one half of the timing belt cover and
noted the cam at TDC and crank at TDC.
1. Mark the arrow on the flex plate so you can see it. It is marked on the side toward the engine, which
really doesn't help.
2. Place the flex plate so the arrow is pointing to the top of engine, where the crank position sensor is
located. The 'long tooth' should be at 270 degrees,or 90 degrees down from the top of the engine.
Checking Correct Position After Installation. [John
Sargent] The LH 2.4 RPM sensor gets its signal from a
slotted wheel riveted to the drive plate. For LH2.4
engines there are 58 slots with room for 60 slots, there
being two hole voids. To check the ring gear installation
for proper timing, remove the starter and position the
engine on TDC for number one cylinder. There are 58
holes on the timing ring, with a void of two holes (room
for 60 holes, total). The void will be at the bottom of the
starter opening if the ring gear is installed properly.
Parts Caution. [Duane Hoberg] Make sure you buy the
correct flywheel from a Volvo savvy parts supplier. One
caveat of multiple application parts (auto and manual
trans flywheel with multiple bolt holes for differentlymounted
pressure plate or torque converter bolt positions
and crank position magnet or stud on flywheel ) is that
you may install the pressure plate or torque converter in
the wrong holes. Or buy the wrong part altogether.
Drive Plate Position at Starter
Drive Plate Position at Starter Opening
Torque on Reinstallation. Retorque flywheel bolts to 50 ftlbs.
For a counterhold to secure the flywheel, install a very strong C clamp through the starter hole in the block,
squeezing on the front and back of the flywheel.