Valve Lifters; Removal - Mercury MerCruiser D2.8L D-Tronic Service Manual

ENGINE MECHANICAL

Valve Lifters

If the camshaft is replaced, the valve lifters (roller tappets) must also be replaced
or serious component failure and engine damage could result.
The hydraulically operated roller-tipped valve lifters are held in position and prevented from
rotation by special retainers. There is one retainer for each head. Care should be exercised
when installing the retainers to ensure that the flat portions of the lifters are properly
positioned in the retainers.

Removal

1. Remove engine cover.
2. Remove valve covers.
IMPORTANT: Place rocker arm assemblies, push rods, and lifters in a rack for
reassembly in their original locations.
3. Remove rocker arm assemblies and push rods.
IMPORTANT: Lifters must be reassembled in the exact same position on the camshaft
lobes so that the roller will operate in the same direction on the same lobe, if reused.
4. Make matching marks on all retainers and lifters as to the location and orientation in the
bores.
5. Lift the retainer piece away from around the top of the lifters. Do NOT disturb lifters at
this time.
Page 3A-102
CAUTION
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002