TM 9-2320-289-34
3-9.
HYDRAULIC VALVE LIFTER REMOVAL.
This task covers:
a. Removal
b. Inspection
INITIAL SETUP:
Equipment Condition
Tools/Test Equipment
l Cylinder head removed. (See paragraph 3-7)
• Magnet
I a.
REMOVAL
1 Loosen bolt (5) and remove clamp
(4). Remove guide plate (3).
NOTE
• If more than 1 hydraulic valve
lifter (2) is removed, ensure
that location of each hydraulic
valve lifter is tagged, es it is
removed, to ensure that it is
installed
in
same location
during installation.
• For 1984 model truck engines,
It may be necessary to use
mechanical fingers to remove
hydraulic valve lifter (2),
Using
magnet,
remove
hydraulic
valve lifter (2) from engine block (1),
b.
INSPECTION
1..
Inspect hydraulic valve lifter (2) body for scuffing or scoring. Replace if scuffed or scored.
2.
Inspect hydraulic valve lifter (2) roller for looseness and missing or broken needle bearings.
Replace hydraulic valve lifter if these conditions exist.
3.
Inspect hydraulic valve lifter (2) roller surface for pits and roughness. If these conditions exist,
replace hydraulic valve lifter and inspect mating camshaft lobe for pits and roughness, If
camshaft lobe is pitted or rough, replace camshaft. (See paragraph 3-12)
FOLLOW-ON TASKS:
l Install hydraulic valve lifter. (See paragraph 3-23)
TA50640
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