A vane-type camshaft phaser for varying the timing of combustion valves including a first torsional bias spring disposed on a cover plate spring guide and grounded to the cover plate and to a slot in a spring retainer to urge the rotor toward an intermediate locking position from any position retarded of the locking position. 8 and 29% by volume and the content of the second solvent in the nonaqueous solvent falls within a range of between 71 and 95. A latch shuttle is movable between a latched position locking the latch parts in the in-use orientation and an unlatched position unlocking the latch parts. The clamp flanks the cap with holding strips along the sides.